Wednesday, December 16, 2009

12/1 Diffusion

You can either move all consumers together(more money and faster), or let them move at their own pace.
Innovaters, early adopters, early majority, late majority, laggards

innovaters are risktakers who have money and like new p , open to media, not brand loyal and gregariuos.

What effects speed of adoption

Relative SCA
compatibility
communicability
complexity
divisibility
reversibility
adaptability
realization

12/3 PR>SI>E>Decision>PPB


Decision means
  • if buy
  • where to buy
  • who to buy - brand,
  • when to buy (now / later)
  • how buy (cash/credit)

all of those involve attitude formation . marketers try to influence. Thank about implications of the order of decisions.

Store Layout and displays - physical or internet
  • attract u into store - self standing v mall
  • get u to buy
  • get u to stay - shop fast!
  • must appear as easy to navigate - tend to turn right- traffic patterns, facings, signage
  • make u feel good
  • properly planned design etc.
  • little things can have a huge effect
  • deeper into store is better. dont fill the shelf.
Impulse Purchase
  • pure - buy for no reason
  • reminder - item reminds
  • suggestion - item suggests a solution to a current problem
  • planned - planned to buy but not now
Post Purchase Behavior
  • dissonance, satisfaction, new pr
  • right after - left behind jeans 0 their +features
  • requires that u leave behind alts w different and desirable features
  • plus more alts left behind
  • plus importance of decision - $, ego, social, safety
  • _irreversibility
  • we, as C, can avoid conflicting info , _ on our P , - on the alts
as mktrs- congrats, other info , register online, allow returns
12/8 what makes C happy


PPB
  • dissonance , what makes C satisfied
  • all concerned w /
  1. expectation
  2. performance
  3. evaluation
  • common view - evaluation - performance relative to expectation
  • contract theory - evaluation is exaggerated in direction of performance- want to understate performance, restaurant, time to wait
  • assimilation or dissonance theory - eval will be brought closer to expectation than is indicated by performance
  • assimilation /contrast 0 eval depends on distance bw exp and performance - circle

if dissatisfied - what doe sC do - most dont complain to business and if they do its to lower level or complain to firends, and dont return
complaints - we dont want to give reason, but if we do - what them to complain. train employees- and value crit. write it down, empower lower level

write a letter - send to president, be polite, syaye facts, request action.

folluw up - be persistand

new Problem recog
- purchase leads to realization of new problem, whole industries around this. where mktrs make profit

CCU - central control unit - where feedback from all phases goes back to.

feedback allows us to be habitual, rather than extended.

mktg strat can be to develop or destroy habitual decision making.

consumerism - activites to protext right not limited to actions of C(also govt business etc)

JFK in 1962
  • right to choice
  1. antitrust enforced by FTC
  2. Sherman - 1890
  3. clayton - 1914
  4. robinson patman - 1936
  • right to safety
  1. pure food and drug act, 1906- established the FDA
  2. meat inspection act- 1907- the jungle by upton sinclair
  3. food drug and cosmetic act - therapeutic devices - 1936- FDA
  4. consumer products safety commision - 1973-CPSC - child safe caps, deadman switch, recently cribs, dont do cars or food stuffs.
Thank about our Ps are safe? deception
  • right to be informed
  1. govt requirement
  2. unit pricing
  3. nutritonal labeling
  4. no deception when is it deception?
  5. from promos - FTC - 1916
  6. Wheeler Lea amendment - gave FTC pwr with deception ads - 1936

  • right to be heard

Monday, December 14, 2009

CB exam 2

Consumer Behavior.

Determine Customer Needs
people have alibis for why they think and thus don't give honest answers.
To get past this:
1. Motivational Research: big house/hummer, motivated by things
2. Projective Techniques: remove defense by using ambiguous stimuli to get people to talk about themselves by talking about how others might feel. More TRUTHiness.
TAT personality test, Cartoon Test, sentence completion (quick)
3. Qualitative Research: Focus groups are the most common. small sample that isn't random, no stat analysis, pick a moderator who can meet objectives and select subjects, learn to handle the group and how many you need. do in depth interviews too.

PROBLEM RECOGNITION > SEARCH FOR INFORMATION > EVALUATION OF ALTERNATIVES

PROBLEM RECOGNITION
significant difference in what you want and what you have. could be due to: out of stock, O makes them aware of a need, dissatisfaction with current alternative. (could also be due to change in finances, ref groups, we do better job, get people to just want)

SEARCH FOR INFO
then how should it be presented
We search INTERNAL first - cheap, may solve, save time.
if that doesnt help we use EXTERNAL - gained for current problem, may or may not happen.

VALUE V COST
Value discusses
fx of the stored info (too much = info overload = worse decision)
fx of relevance of stored info
fx of importance of the decision based on
fx of perceived risk - financial, socia(normative only)l, safety, performance, length of commitment
COST discusses
$moneys
delay of gratification
time
info overload
psychological frustration which is like standing in line, getting annoyed

Factors that effect search
Demographics
personality
so we give them info
Marketer dominated not
non personal Ads consumer reports, and
otra independent organizations and govt and specialty media

personal personal sales word of mouth, social networking
OPINION LEADERS:

Personal and not marketer dominated information often comes from Opinion leaders. They routinely give information and affect opinions, even if they dont own the P. we tend to like OLs like us. Marketers try to reach these OLs by giving them sneak previews and information. OLs like info.

ATTRIBUTION THEORY: how we attribute causes to an event> easiest when it happens many times
things to apply:
covariation principle of
distinctiveness- only w cause
consistency over time
consistency over modality: diff sitchs
consensus: others agree
single event - causal schema - past exp of similar event/cause relation
(build scenarios)


When you work with people - look for correspondance to reflect their true feelings, likely to be correspondence if they go against a specified role, do something unexpected

Search behavior ?s
how do we process : by brand? att?
methods of study
recall : used in early research, got lots of misinfo, people forgets, ok for gross measures
info display boards: flip over, pretend to choose.
learn content>what info required
learn sequence: when
depth > amount of info required
Problems: only one source, is studied, recs from friends and subcontracting not considered. will people behave normal? are alts realistic?
Process tracing techniques: learn why participants do what they do - talk out loud is protocal analysis. price is impt bc etc
observation


Malcom Gladwell
Howard Moscowitx changed the view of mkt segments by having right pepsis, not pepsi. and introducing
Horizontal segmentation: all things considered, we're on even playing field, no mustard heirarchy. diff must for diff folks.

Platonic dish> there is not one correct and platonic way to prepare a dish. search for variability. embrace diversity to find ways to happiness


Barry Shwartz and the paradox of choice
national dogma- choice is best! yay!
he says - i want a pair of jeans , not 20
secret to happiness> low expectations. wedding vows =you'll do.
lo choice is better for all. not cut and dry - its fascinating! cog dissonance

Do we always make our own decisions?
gifts, conformity, interlocking purchases
decide not to decide
own based v subcontracting: others make decision. this isnt generally recognized
subcontracting a decision : because someone else knows more, we dont have time, decision too complex or important, decision


Thorelli and Engeldow:
want to learn about info seekers , people who buy CR as subjects
64% were aware of recs
85% bought rec'd brand - own or subcontracted? never asked! ! !

Own Based Subcontracted
\hybrid/
/ \
evoked set evaluative criteria
formation formation
{brands we {all things considered,}
choose from) [mpg,megapixels}
[nikon v canon]

It is a ? of how you use the info
just evaluate more > not even hybrid - might just use as info or might use straight

IMPLICATIONS of subcontracted decision making
shorter search, many academic studies ignore
real world should be adabted
we may underesttimate the effect of OLs

you will search more when its risky and you have little info, but if its really impt you might not search much at all! just subcontract> DRs

public policy implications> should we encourage testing and rec info - then people just use stuff instead of think about info/decision OR education > how to use the CR as info '

ROSEN ARTICLE
conclusion, implications, summary purpose why unique


Learning and Memory > takes place at many levels
simple memorization :iconic rote learning thru reps
understanding : insight

ST memory - limited to 5-9 bits
learn by
Repition chunking associations
275163 275 163 913 515-0333
bas eball
LT MEMORY- 7 touches etc
Rep Association emo tie> VW car crash customer service


BEHAVIORIST VIEW OF LEARNING
classical- associations PAVLOV
operant- rewards/bf skinner
shaping behavior - down n under slowly closer to goal
partial reinforcement - slot machine
relate to other stimulus
stimulus discrimination or generalization
separate self - unique

info marketing - see diagram. sell your knowledge by doing free first

Cognitive view of Learning
mere exposure
iconic rote
vicarious learning : modeling/bandura
analytical reasoning:understand/internalize

Models of Brand choice
HI v LO INVOLVEMENT(state of arousal/interest)
HI > understanding>attitude>behavior
LO > Recog>behavior>attitude
Can be hi or lo involved with
search in the product
medium- print is hi , tv is lo - do you have to do anything? read?
ad: get people more involved in P can be a strat
McD's > emo commercials Mrs. Thatcher
retaliation : Wendys wheres the beef(substance, not emo)

Family Influence
HH is all live in one unit, household
Family impacts
socialization - norms etc
Family Life Cycle FLC

FLC, defined thru married v single, age of parents, age of kids
single single 18-26 n/a
newly married: married 22-? n/a
full nest i : married under 6
full nest ii: married over 6
full nest iii: married pick fights carefully w/ adolescents
empty nest i: married downsize in college etc
empty nest ii: married retiring
solitary survivor: dead spouse

axe works due to insparational ref groups

FAMILY ROLES
decision maker
initiator
info gatherer
influencer
gatekeeper
purchaser
preparer
user
maintainer
disposer

Family Role info
decision maker: makes decisions
usually hi class its the husband, lo its the wifey
autonomic : separate but together
syncatic - joint

initiator: notices problem

info gatherer: need to know how to present the info
influencer:
in FNi the kids start being this
gatekeeper: control flow of info
R rated movies for the ninos?
purchaser
might change decision
ie/ men in grocery stores
preparer
if it isnt usable when u buy
assemble, cook, clear directions
if not clear: no repurchase
GM snack n cake - alum coating on cardboard
powdered egg= not doing well by family
user
maintainer
clean.inspect / car/oil/ DOG ewwww.
disposer
impt for green mktg, and when its like batteries and u need to get them info on how to

In home test is best! will figure out who does what role and how those need to be addressed and what info is needed


EVALUATION OF ALTERNATIVES
attitude> to react positive or neg to an object consistently
usually are formed
developed through SOCIALIZATION, REPEATED EXPOSURE, LEARNING

Attitudes are green
behavioral (action), Affective (emo, outward statement or expression), Cognitive (thoughts)

OBJECTS have ATTRIBUTES which are phys or emo properties and a BELIEF is the probability that an object posseses an att. and an EVALUATION is how you feel about how + or - it is to have that att

COMPENSATORY model
if one att in an object isnt doing well, but another exceeds expectations, that can make up for it

Fishbeins expectancy model >
Ao=E Bi Ei
sum of all beleifs times evaluation for each attribute


NON-COMPENSATORY model- look in txt for more examples
poor performance in one att screws it over

Conjunctive- must pass all minimums, but then might have many who pass and then you have a smaller evoked set (hurdles/marines)
Lexicographic - order atts by important, pick one that scores best on most impt, if theres a tie, go to 2nd best etc
(political candidates/class schedule)

ATTITUDE!

We want to be able to change an attitude, so learn how they are formed
Fishbein behavioral intention model
> look at att toward behavior not object, know if ull buy it
B=I = Aact(w1)+SN(w2)
Intention= Attitude toward action of purchase * weight + Social norm*weight
weight measures which is more important to you

Aact=E Bi Ei where i is an outcome of action and not an attribute

SN is measures by
E NBj * MCj
where j is ref group
NB is their opinion - normative beleif of what you think they think
MC is how much you care, Motivation to Comply

END notes for 2nd test



Still need notes on Rosen article and these pages

Chpt 6
212-215
How family members interact is dependent on culture/subculture, role specialization of diff fam members , the degree of involvemet each has in product(teens more in interwebs), and personal chars of family members(education level etc/traits aggresiveness)
USA is less male dependent now, and vs other countries


CONFLICT RES
bargaining, impression mgmt(misrepping facts to suit argument) , use of authoruty, reasoning, playig on emo, additional info
When coercive methods - like silent treatment - is used.. satisfied w outcome, not w decision process

Conclusions about family decision making -
1- diff fam members involved at diff stages
2- diff members evaluate diff atts
3- a decision maker taking acct of what other fam members want in process is impt, tho seldom studied
4- who participates and what method used are fx of P category then fx of chars of fam members and family .
5- agreement more common than dis.

MKTG STRAT AND Fam
fam decisoin process caries across segments like stages in cycle
discover who is involved at each stage, what motivations are, and develop strat to meet needs of all

consumer socialization - youngsters acquire skills and knowlege and attitudes relevant to fx of them as consumers in mkt
content - what they learn
process - how they learn it

217-220
process of CS
ads/friends
instrumental raining - direct
modeling - indirect
mediation - parent alters child's initial interpretation(it can walk! nope, it cant)
SUPERMERCADO AS CLASSROOM
observing
making requests
making selections
making assisted purchases
making independent purchases

MKT to children
ethics?
who understands?
kids clubs

Chpt 7
241-249
WOM - face to face
opinion leader - go to guy.
enduring involvement: hi LT interest in P category=enhanced knowledge
gregarious
Market Mavens - generalized mkt influencers, no specific category
extroverted/concientious
direct flow - mktg info to relevant seg
two step flow of communication:on person receives info - passes on
multi step flow of comm: mktg or otra info to OL to mkt seg and back around

can be direct or indirect
hard candy - indirect etc


KNOWLEDGE
purchase
involvement HI LO

HI med hi

LO lo med


MKT strat for this
ads to stimulate convos
simulating - celeb

P sampling - seeding - free stuff to potential customers bzz agent etc
BUZZ_ sony cameras and blue cross blue men EXPONENTIAL EXPANSION OF WOM


Chpt 8
285-287, 294(b)-297,
VOLUNTARY EXPOSIRE -
infomercials
permission based mktg - email lists
ATTN
SITUATIONAL FACTORS
stimuli in env other than focal stimulus - P or ad
clutter - density of stumuli
single sponsor tv shows/shorter comms
program involvment - editorials around ads how much people are interested

NONFOCUSED ATTN
cocktail pty effect
Hemispheric lateralization - activity on each side o brain
Left - rational - needs rest
Right - images/impressions- keeps going - enerRgizeR
subliminal stumuli
interpretation - assignment of meaning to sensations
gestalt - rEvolution w vert line missing in E
perceptual relativity - relative not absolute
cognitive interpretation - stum are placed into existing categories of meaning
affective interpretation - emotion triggered by stimuli

300(b)-303, 307-311
STIMULUS chars
organization: phys arrangement of stimulus objects
proximity :close together stimuli = same category
generics
ambush mktg - try to make u think that a big organization is part of event,
but it is not.
closure - E in REVOLUTION
figure/ground - u know what focus is

307-311
PERCEPTION AND MKTG STRAT
retail strat
cross promotions- ads for milk in cookie aisle
brand name and logo development
linguistic considerations:mtn dew cherry v code red and nutra sweet
branding strats:
brand extention : levi nice jackets - no work
cobranding: intel INSIDE! woah.
logo design and typographics: fedex
Media strat: where to put ads
Ads:capture attn, convey meaning - mt bachelor
package design/labels: m n ms more colors = eat more, taller packages=more inside, etc

Chpt 14
517-526
Types of Consumer problems :
active
inactive
ie/ timberlane
uncontrollable determinants of problem recog
desired v have
STRAT
discover probs
activity analysis:survey to concentrate on an activity and what needs may exist there
P analysis: same, for P
problem analysis: start w/ problem (organization) sees if its a problem
human factors research : carpal tunnel?
emo research " how consumers cope w/ emo when P fails? etc
respond to C Problems
insurance/cc - when gradutate
helping C recog problems
generic v selective problem recog
generic - variety of brands w/in category can fix
early in PLC, firm has hi mkt share . problem recog limited, industrywide effort - milk
selective- only one brand can solve! blister block
approach to problem recog - - problem recog depends on importance of decision and magnitude of diff bw desired and current state
influence desired state/ influence perception of current state
timing - shovel
suppressing prob recog - cigarette

Chpt 15
533(b)-537,
Types of info sought
evaluative criteria:other brands/stores etc
awarenesss set - all brands u know of
evoked set - ones u might buy
inept set - ones u dont want
inert - brands you're indifferent to
STRAT- must focus on awareness, but also perception
existence of many solultions
performance level or char of each solution on each criteria


539-545(b),
info search
intwrwebs- not used equally by segments or countries
info is expected online
info boosts offline sales
viewed as valuable
reduce role of salespeople - cars
do more buy generics after longer search instead of branded?
info overload
how do sites drive consumers to info and info to consumers and how can online be integrated w offline
behavioral tgting - if they visited 3 times, hit w snapple
seach engine optimization seo

551-556
STRAT based on patterns
Maintenence
Disrupt- right now its inept, improve it and advertise the shit out of it.
Capture- get them in the store for qualities they want - point of purchase displays showing impt things
Intercept - attract inept when they are looking at othersthat are already evoked
Preference- info campaign saying - we're IDEAL!
Acceptance-


Wednesday, November 18, 2009

Our team, 3I, used the following studies.

Things to decide:
research to do
sir1- had to know perceptual objectives - move into 2 or stay in 5.
vixn -
viva- looked at what we fucked up here to make vixn attributes
unit production - our mkt share. We couldnt figure out why our predicted buying rate for SIXI was lower than actual. we thought we had enough sales people and had greatly increased our brand awareness through ads. we figured it was
ads- studies 15, how well we were doing. etc.
sales people- study 2 13 14
research studies

Study 1
  • To determine when ads were needed we looked at brand awareness and also compared those with the results of study 15
  • Used purchase intentions by segment especially in the last period because we saw that SIXI had a higher purchase intention than it was actually selling(when compared to study 2). We used this information to try to figure out what we were doing wrong. After Analyzing things that may have gone wrong we decided it was just that we didn't produce enough, since we did sell out and produce more than we told it to. We used this information to increase production.
Study 2
  • This is one of the studies I concentrate on.
  • Used to find out which segments were growing the fastest.
  • When we decided to make a new product, SIXI, we used this study to decide to put it in segment 4, which at the time was one of the faster growing segments. We also looked at study 5 to determine that 4 was a good segment to go for.
Study 3
  • Used in conjucntion with studies 13 and 14 to see if we needed more salespeople in a given channel
Study 4
  • To determine what attribute levels for power and design would be appropriate for our research and development projects. For example - To determine how to update SIRO, We mainly knew we needed to increase power, since SIRO had such a low power rating
  • To determine when our perceived price on each product needed to be adjusted.
  • Used in comparison of axis 2 of study 5 often.
Study 5
  • We have an excel document tracing the movements of perception of each product, especially ours. and tracing how the ideals are moving
  • As we traced how they were moving, we predicted where each ideal for our segments would move so we could change perceptual goals.
  • Use this to determine where to set our perceptual goals for each product by seeing how well our perceptual goals are working and where the ideals of the segment our moving.
  • Used to track the desired preferences of 4 and 5 mostly, since they are where are products are most successful.
  • Used this to track the ideal for 2 at the beginning because we tried to reposition SIRO to segment 2.
  • Increased advertising when we wanted to make our perception goals different
  • Used to determine the power attribute for SIXI. To do this we looked at how segment 4's ideal was moving and where it was expected to be in 2 periods. In this way we stepped in the path of 4 and it helped us to be near the ideal when SIXI's research was done.
  • Used to determine price of our products.
  • To determine how to update SIRO, along with study 4
  • To determine who our competition is in each segment, along with study 2. We then used this information to look at other information about our competitors in an attempt to maintain or increase our market share.
Study 6
  • Chose to place SIXI in segment 4 because it was previously not dominated. the closest only had 30%ish mkt share and was kinda far away
  • Watched market segment growth and predicted market segment growth to help determine how much we should increase our production each period to keep up with the market.
Study 7
  • Used to update VIVA to VIXN by comparing these results and how well VEAL was doing and compared to their actual attributes as seen in the newsletter.
  • Made note that most Vodites are in channel one, and made sure we had sufficient sales people in that channel
  • compared to study 8, in the future, look at VEAL and see why more people buy it when they get to the store than those who thought they would buy it.
  • expect to use to be better prepared once we enter the vodite market with VIXN, hopefully in this period, budget allowing.
Study 8
  • Will watch to see what segments are growing fastest. expect to use to be better prepared once we enter the vodite market with VIXN, hopefully in this period, budget allowing.
Study 9
  • expect to use to be better prepared once we enter the vodite market with VIXN, hopefully in this period, budget allowing.
Study 10
  • Used this to help create VIVA, which then we updated as this study changed to create a better VIXN which had a price closer to what our research predicted VIVA would cost. Kept a pretty broad strategy but focused closely on which things consumers were more sensitive about. used with study 11.
Study 11
  • Used to help create VIXN with study 10. Especially in deciding which aspects of 10 to pay closer attention to by looking at the larger segments and leaning toward those numbers.
  • Can use more to make sure that VIXN looks like it would be successful or if we should try a different approach on a different research and development project.
Study 12
  • weren't using because we had high brand awareness and weren't too worried about how much competition was spending. Might use in future if another brand starts encroaching in our segments
  • We used at the beginning when we had it to see if people beleived we were spending a comparitive amound on advertising as we actually were. Obviously wanted our predicted amount to be higher than what we actually spent, meaning our advertising was working. and would know if it was lower that we had the wrong perceptual goals.
Study 13
  • Wanted to have a comparative number of sales people. Used to help us determine where we needed more salespeople, along with study 14

Study 14

Study 15
  • Used to determine when to increase or decrease ads

Saturday, October 10, 2009

Class,
For your assignment on Tuesday, you are to read two articles. Links for the articles are given below:

The link for the Thorelli/Engledow article is:
http://www2.lib.ku.edu:2048/login?URL=http://www.jstor.org/stable/1249972

It has two main purposes: to summarize parts of a multinational 10-year study of consumer information systems, product testing agencies, and uses of product test reports and to propose new directions in consumer policy-private and public.


----



The link for the Rosen/Olshavsky article is:
http://www2.lib.ku.edu:2048/login?URL=http://www.jstor.org/stable/1249972

(This will take you to the abstract. Look to the right for the symbol for the PDF file of the actual article.)

Let me know if you have any problems getting to the articles.
Prof. Rosen

Monday, September 21, 2009

rosen/singh article

effect of sex/death embeds

an EMBED is a picture or something embedded in an ad that most people don't notice, but it percievable if it is pointed out. deliberatly hidden

theoretical support -
theory of low involvement info processing- see without looking at. affect behavior w/o you knowing it. (ie people prefer things they were exposed to more than those they arent. but in recog tests, cant remember seeing those things.)

sex/death - freudian - appeal to the id

Is there an effect (and is it negative or positive) of sex/death embeds
previous research is inconclusive. some made ads, some used matching ads, some compared which is better and some did behavioral/attitudinal surveys after viewing each


Issues in research
u should measure lots of stuff to make sure its significant. bc of nature of not conciously being aware of thing. this is neccssary.
words v pictures study one at a time or both? pictures can be neg or pos to diff people


RESEARCH OBJECTIVES +HYPOTHESIS
RO - do they have an effect? + or -
manner of presenting - words v pics
esp w/ sex /death

H1: the use of s/d embeds w/ affect some measure of effectiveness
H2:effect will vary on manner of presenting and type of product
H2A. sex will be better than death for cologne ads
H2B. death will be better than sex for liquor ads

results - not statistically significant except in liquor ads peoplle looked at the body one longest and death one shortest. which disproves h2B

Wednesday, September 2, 2009

SAS I

To set up a library/folder on SAS:
Libname NAME ‘location of hardrive’
Ie/
libname hw2 'C:/temp';

file, import wizard
format is always a CSV format
Comma Separated Values

member-name it blah
Data cannot be open in something else



Most commands are called proc (procedure)
data=libname.filename;

Proc contents data=hw2.data;
Run;

proc means data=hw2.data;
run;

that means only on numerical data get the means
n = number on nonmissing values
very good to find errors

click running person or press F8



proc means data=hw2.data;
title "Question 1"; ----this titled the means page
*this is a comment; -- green means not part of code
run; -- when this is blue, command is ready to run.

proc means data=hw2.data;
title "Question 1";
*this is a comment;
var purch child; -- this is so only these variables will show up
run;

this copies data from data to data2
data hw2.data2;
set hw2.data;
run;


if you have a zip code, make it text. database fields

proc means data=libname.filenam mean skew;
run;
mean finds the average
skew finds how spread out they are

median - 50 % on each side

nw side of town - house in lawrence, doug compton , has huge mansion and giraffes zebras elephant!
\
\
ELEPHANT\____________________


FS folks? HYVEE
__________________________
6th st


wak

Data commands:
1. manipulate: modify variabled
  • transform variable types - character to numeric
  • create variable as fxn of other variables
  • create indicator variables repping unique variables of a character variable (e.g. ks=1 when state =ks)


libname hw2 'e:/';


proc means data=hw2.blah;
run;


proc sort data=hw2.blah;
by state;
run;


proc means data=hw2.blah skew;
by state;
run;

this one does stuff
data blah.new;
set hw2.blah;
run;

this one makes a column at the end where x = 1

you could do like year=2009 and then everything in that file would be from that year. the name of the variable cant start w a number and shouldnt have spaces, bc that makes it confusing


data hw2.new;
set hw2.blah;
x=1;
run;

data hw2.new2;
set hw2.blah;
x2=2*x;
run;

if you put the same name in data (new one) and set (where u get info from)'

if you make them both the name of original data - it will overwrite it

this makes a variable in new 2, from new, and the var is r, the number is between 0 and 1. RANDOM NUMBERS.
data hw2.new2;
set hw2.new;
x=1;
x2=2*x;
r=ranuni (0);
run;

if statments

only pull out things that are Male
data hw2.new2;
set hw2.new;
x=1;
x2=2*x;
r=ranuni (0);
if gender='M';
run;

Make sure you close a data set before altering it. or it wont work.

if you only want 5000 random entries. of 50000 (10%)

generate a random number, select off that number.


data hw2.blah3;
set hw2.blah;
z=1;
x2=2*x;
r=ranuni (0);
if r<=.1; run; *this is telling it to select 10% of data, the 10% that was randomly assigned a number less than .1

newest file goes on top after data, then where u get info from

this makes a new file called newest, 10% of random sample is taken and if it's a female it says female=1. Male it says female =0


data hw2.newest;
set hw2.blah;
r=ranuni (0);
if r=<.1; if gender='F' female=1; if gender='M' female=0; run;

this makes a new file called newest, 10% of random sample is taken and if it's a female it says female=1. anything else it says female =0
data hw2.newest;
set hw2.blah;
r=ranuni (0);
if r=<.1; if gender='F' female=1; else female=0; run;

keep/drop - decide which things to keep in table

2 commands that may be useful in hw

freq - how often the variable occurs

for example - how many times each state


proc freq data=hw2.blah;
table state;
run;

MAKES A HISTOGRAM
proc univariate data=hw2.blah;
var state;
histogram state;
run;


proc ttest data=hw2.blah;
class gender;
var first;
run;

what u need in hw

answer: carefully and specifically

sas output:copy and paste relevant output you used to derive - you can abbrev output to only show relevant - get from output thingy

sas codes-used to get output

are men more familiar or not

the bigger the sample, easier to reject the null

proc ttest data=hw2.one;

class gender;

var first;

run;

t value is minimum alpha to reject the null.

im so hungry and not paying attn.

proc freq data=hw2.one;

CROSSTABS

proc freq data=hw2.one;
table gender*buyer;
run;

9-23

tuesday @5

he'll be in a chatroom

decision tree review

to do decision trees you have to use enterprise miner

solutions >analysis>enterprise miner (E)

file>new...> project

have to have already inputted data in sas first

look at 1st icon - drag to project view (input data source)
double click
select library and then file
will select random 2000 datapoints.. so you have to tell it to use all observations.
click variables. right click and select model role and reject ones you dont want to use
set buyer as target
select book categories as inputs
close sm window

drag tree to project space

click next to file, drag arrow to tree
double click on tree icon
click basic - use chi squared
significance level .2 is fine, unless you want a significance level to make tree stop
min level of observ in leaf - how many it has tyo have
max branches - binary=2
click advancced - model assessment measure - proportion of event in top 10 , how much sep should be bw buyer and non buyer

right click on tree, make it run. will make crosstabs etc

click around the optimal tree, this has 23.

view tree

...1 6...
less than 1 1-6

leaf statistics

right click and copy , edit copy , or save tree as gif

answer ?, show tree.

Wednesday, August 26, 2009

MKTG 411 ch 1 motes

motes. notes like i did in mgmt. because mgmt style notes is too long to write.


chapter 1. mktg 411, CB

Tuesday, July 7, 2009

chapter 9 notes

neural plate - is stem cells
somal translocation - sticky hand
glia-mediated migration - fireman poles

page 16 - neuron death is normal
we need to kill some neurons so that things work.
glial cells clean up usually
but when it dies of necrosis its messy. implodes.

postnatally - synaptogenesis - ways we grow things pg 18

inhibit innapropro responses - even tho bored, dont storm out


http://deepleap.org/


slide 23 - ferrets
took visual neurons to rewire to be auditory

ferrets over time were able to see later - even tho the auditory shit was controlling it
2nd study - pg 23 - change w/in a system - owls w/ prisms on eyes
30* change in visual field
shifted visual map - not auditory - in occipital
neurons shifted to - topographic map changed

pg 24
early music exposure so u can get absolute pitch - charlsey
genies problem - sensory deprivation

pg 26
rewiring


Thursday, July 2, 2009

Sensorimotor system

3 Principles of Sensorimotor

Function

Hierarchical organization- figure 8.1

–Association cortex at the highest level, muscles at

the lowest

–Parallel structure – signals flow between levels

over multiple paths

Motor output guided by sensory input

–Sensory feedback (all but ballistic - happen w/o mediation, swing bat etc )

Learning (experience) changes the nature

and locus of sensorimotor control

–Conscious to automatic


starts @ association cortex down to smaller things


2 Major Areas of Sensorimotor Association Cortex

Each composed of several different areas
with different functions

how divide the areas up ?

Posterior parietal association cortex (also for visual where pathway- good that they're connected so we can see where going)

Integrates information about

–Body part location

–External objects

Directs attention

Receives visual, auditory, and

somatosensory information

Outputs to motor cortex:

–Dorsolateral prefrontal association cortex,secondary motor cortex, frontal eye fields w/ damage in posterior parietal ass cortex

Apraxia – disorder of voluntary movement

– problem only evident when instructed to perform an action – usually a consequence of damage to the area on the left - brush teetth in office no toothbrush

Contralateral neglect – unable to respond to stimuli contralateral to the side of the lesion - usually seen with large lesions on the right-

cooccurs w where they cant see things on left - cant move left arm etc

Dorsolateral prefrontal association cortex(top sides of frontal)

Input from posterior parietal cortex

Output to secondary motor cortex, primary motor cortex, and frontal eye field

Evaluates external stimuli and initiates voluntary reactions – supported by neuronal responses

Strongest neuronal firing in anticipation of a movement



Secondary Motor Cortex

Input mainly from association cortex

Output mainly to primary motor cortex

At least 7 different areas

–2 supplementary motor areas

SMA and preSMA

SMA experiement - look at brain when moving spring, thinking about moving spring, and doing finger movement

–2 premotor areas

dorsal and ventral

–3 cingulate motor areas

Subject of ongoing research

May be involved in programming movements

in response to input from dorsolateral

prefrontal cortex

Many premotor neurons are bimodal –

responding to 2 different types of stimuli

–E.g. visual and somatosensory


Primary Motor Cortex

Precentral gyrus of the frontal lobe - does lots.

Major point of convergence of cortical sensorimotor signals

Major point of departure of signals from cortex

Somatotopic – more cortex devoted to body parts which make many movements


Control of hands involves a network of widely distributed neurons - move one part of hand, effect all hand neurons

–Focal Dystonia - when some fingers are so interelated that you forget that they are seperate entities - pinky and ring move a lot w/ middle finger - so middle finger moves and ring and pinky move with it. happens in pianists.

Stereognosis – recognizing by touch – requires interplay of sensory and motor systems

Some neurons are direction specific – firing maximally when movement is made in one direction

4:40
subcortical you ask?

Cerebellum and Basal Ganglia

Interact with different levels of the sensorimotor hierarchy

Coordinate and modulate

May permit maintenance of visually guided responses despite cortical damage

Cerebellum

10% of brain mass but has 50% of neurons in brain

Input from 1° and 2° motor cortex

Input from brain stem motor nuclei

Feedback from motor responses

Involved in fine-tuning and motor learning

–Learning of sequences or movements where timing is critical

Up with the cerebellum, down with the frontal lobes! - we do better if we dont think about it. want it to be automatic.

–Damage - problems with direction, force, velocity & amplitude of movements, adapting, posture, balance, gait, speech, eye movements

May also do the same for cognitive responses

- help coordinate to changing stimuli

Basal Ganglia

A collection of nuclei

Part of neural loops that receive cortical input and send output back via the thalamus

Modulate motor output and cognitive functions

–Response learning - learned associations

Abnormal functioning involved in Tourette’s syndrome (as)- smoothness of movement -

Substantia Nigra –Loss of nerve cells causes Parkinson’s disease - hyperkenesia - cant stop moving - diskenisia - cant movie. --- cerebellum just working - when he ice skates - no symptoms- video of micheal j fox

Striatum –Abnormal serotonergic functioning linked to Huntington’s disease

> • chorea- excess of unwanted movements - but these are jerky, not fluid. twitches - video




4 Descending Motor Pathways -

2 dorsolateral - figure 8.7

Most synapse on interneurons of spinal gray matter

–Corticospinal descend through the medullary pyramids, then cross

Betz cells – synapse on motor neurons projecting to leg muscles

Wrist, hands, fingers, toes

–Corticorubrospinal synapse at red nucleus and cross before the medulla

Some control muscles of the face

Distal muscles of arms and legs


Dorsolateral

one direct tract, one that synapses in the brain stem Terminate in one

contralateral spinal segment Distal muscles Limb movements



2 ventromedial - figure 8.8- take over motor movements if dorso thing fails- but cant do just reaching single limbs out.

–Corticospinal

Descends ipsilaterally

Axons branch and innervate interneuron circuits bilaterally

in multiple spinal segments

–Cortico-brainstem-spinal tract

Interacts with various brain stem structures and descends

bilaterally carrying information from both hemispheres

Synapse on interneurons of multiple spinal segments

controlling proximal trunk and limb muscles


Ventromedial

Both corticospinal tracts are direct

one direct tract, one that synapses in the brain stem More diffuse Bilateral innervation Proximal muscles Posture and whole body movement



Motor Units and Muscles

Motor units – a motor neuron + muscle

fibers, all fibers contract when motor neuron fires (contraction message)

Number of fibers per unit varies – fine control(1-1 ratio), fewer fibers/neuron

Muscle – muscle fibers bound togetherby a tendon

Acetylcholine (curare and botox are antagonists of acetyocholine) released by motor neurons at the neuromuscular junction causes contraction

Motor pool – all motor neurons innervating the fibers of a single muscle

Fast muscle fibers – fatigue quickly - they work quickly when you need rxn but they dont have a great supply of oxygen or blood - sprinting

Slow muscle fibers – capable of sustained contraction due to vascularization - capable of sustained contraction - swimming vs running - have good blood and oxy flow

all Muscles are a mix of slow and fast

Flexors – bend or flex a joint

Extensors – straighten or extend

Synergistic muscles – any 2 muscles whose contraction produces the same movement

Antagonistic muscles – any 2 muscles that act in opposition

FIGURE 8.11


MUSCLE ORGANs

Golgi tendon organs

–Embedded in tendons

–Tendons connect muscle to bone

–Detect muscle tension

Muscle spindles

–Embedded in muscle tissue

–Detect changes in muscle length


Reflexes FIGURE 8.13 etc

Stretch reflex – monosynaptic, serves to maintain limb stability

Withdrawal reflex – multisynaptic

Reciprocal innervation – antagonistic(that do opp move w/ joint) muscles interact so that movements are smooth – flexors are excited while extensors are inhibited, etc.-



Recurrent collateral inhibition - each time a motor neuron fires, it momentarily inhibits itself via Renshaw cells- cant fire twice real quick - so it doesnt hurt itself - take turns


back to more general...

Central Sensorimotor Programs

Perhaps all but the highest levels of the sensorimotor system have patterns of

activity programmed into them and complex movements are produced by activating these programs

Cerebellum and basal ganglia then serve to coordinate the various programs

Motor equivalence

A given movement can be accomplished various ways, using different muscles

Central sensorimotor programs must be stored at a level higher than the muscle (as different muscles can do the same task)

Sensorimotor programs may be stored in secondary motor cortex

–Signing name

The Development of Central Sensorimotor Programs

Perception & sensorimotor programs (figure 8.17 - the moon! )

Programs for many species-specific

behaviors established without practice

–Fentress (1973) – mice without forelimbs still make coordinated grooming motions

Practice can also generate and modify programs

–Response chunking –Practice combines the central programs controlling individual response E.g. typing (hunt and peck v touch typing )

–Shifting control to lower levels–Frees up higher levels to do more complex tasks –Permits greater speed


Motor cortex-controlled robots- vid


Summary

The motor cortex is organized much like the sensorimotor cortex, information just flows in the opposite direction.

The brain strives to perfect movements through feedback and move them from upper to lower levels.

Movement can happen at the level of the motor unit, usually to enhance survival.


test on tuesday - read 5, 6, skim 7. read 8, take notes.
study notes