New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

Introduction to Research in the Behavioral Sciences

by: Dorris Purdy

Introduction to Research in the Behavioral Sciences PSYC 218

Marketplace > University of Idaho > Psychlogy > PSYC 218 > Introduction to Research in the Behavioral Sciences
Dorris Purdy
GPA 3.5


Almost Ready


These notes were just uploaded, and will be ready to view shortly.

Purchase these notes here, or revisit this page.

Either way, we'll remind you when they're ready :)

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

Class Notes
25 ?




Popular in Course

Popular in Psychlogy

This 5 page Class Notes was uploaded by Dorris Purdy on Friday October 23, 2015. The Class Notes belongs to PSYC 218 at University of Idaho taught by Staff in Fall. Since its upload, it has received 37 views. For similar materials see /class/227927/psyc-218-university-of-idaho in Psychlogy at University of Idaho.


Reviews for Introduction to Research in the Behavioral Sciences


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 10/23/15
Psych 218 Introduction to Behavioral Research Methods Week 14 Lecture 28 Outline of Today s Lecture Last lecture we discussed Inferential Statistics multi factor ANOVA Parametric vs nonparametric Inferential Statistics Assumptions Posthoc tests vs planned comparisons Today we will discuss Exam Review Outline of Course Topics Eplstemologyi theorlesi nvpotneses dlscol lflrrnatlorl strong inference al vs Relatlorlal Research Designs ni 9x as so in I3 0 3 a I a a o I g a e Measurement rellabllltviscalesiSamplng Research Etnics Noneexperirnental researcn tecnnioues and Survevs Experlmerltal researcn Witnin vs between vs mlxed designs rnalan researcn Descriptive statistics rneasures of central tendencv and dis ersion lnferential statistics 7 relational researcn gtcorrelation and regress on e Experlmerltal researcn gttests for differences arnong rneans Hest ANOVA Rte portlrlg Research results Wl ltll lg papers presentations APA s v e z 3 o gtlt u e a o E Example Definition Questions Define each of the following terms using pictures or examples if necessary Splitplot Research Design Parsimony Example Short Answer Question Condition Ordering in thhin Subiects Designs Joe Schmols designing a Witninsubiects experlmerlt testing tne effects clotning color on attractiveness unique presentat n order eacn Sublectwlll receive Feel free to rnodifv Joe s experlmerltal design if vou feel itWill nelp increase efflclel lcy but make sure vou expllcltly describe and iustifv vo ur modl c l Example Short Answer Question Variables Gerald needs your help in designing a su y 0 ss ss whether morning peoplequot are more productive workers ldentifv and describe examples of lrldeperlderlt dependent intervening extraneous and confounding variables for tnis studv lf anv oftnese variables do not eXlSI forcerald s studv state w v n is cerald using7 E 09 is 1 0 to I a 6m 28 I 01 e 9 10 8 a 2 I Q I e 3 o a E g z 2 Example Essay Question Using a concrete scienti c example generate a set of premises and conclusions based on conditional reasoning properly identifying the 4 poss bilities for premise 2 and whether the accompanying conclusion is logically valid or not Do this in the context ofboth con rmational and discon rmational reasoning Discuss which premises an conclusions are most scienti cally useful and which are e Psych 218 Outline of Today s Lecture Introduction to Last lecture we discussed B h vi r l R r h e a 339 gsea C lnferential Statistics multifactor ANOVA e O S Today we will discuss Parametric vs nonparametric Inferential week 1439 Lecture 27 Statistics Assumptions Posthoe tests vs planned comparisons Example of 2way WithinSS Graph of WithinSS ANOVA ANOVA as uwmun Sul a s ms Estimated Marginal Means of Postural Ease l Postural Ease l l Eves Closed Eves Open Availability ofvisual Information Some Final Points on Multifactor AN OVA Independence of Main Effects and Interactions the general linearmodel 1 Example 2 factors IVs A and B arm DV Score AMEA BMEB ABlAB d error 1321 Where MEAis the main effect of independent variableA MEBis the main effect of independent variable B IABis the interaction between variablesA and B 17229 17229 Parametric vs Nonpa ra metric Statistics Assumptions of Parametric Statistical Tests ttests NOVA Pearson r etc DV has interval or ratio scaling properties DV scores randomly sampled 39om population Sampling distribution ofthe mean is normal Mthingroup variances are homogeneous IV affects means but not variances Homoskedasticity vs heteroskedasticity If any of these assumptions is seriously violated a nonparametric test must be used How do You Know If Your Data Seriousy Violate the Parametric Assumptions Insure DV has interval or ratio scaling properties and that scores are randomly sampled from population 9 assignment of subjects to conditions is ran om Check to see if sampling distribution of the mean is normal e difficult to assess Without replication of experlmerlt however e violations o he norrnality generally have little effect on the validity ofthe ANOVA as long as the distributions of the populations have sirnilar shapes e g i all negatively skewed Mthingroup variances are homogeneous IV affects means ut not variances e cornpute variance for each conditiongroup and cornpare e ForANOVA variances rnust differ by at least 4 times before their inequality invalidates the statistical test Example of 2way Within8s ANOVA Output 2 Factor Univariate Analysis of Variance is used to analyze the data Table of Means and Standard Errors from SPSS 5 vlslnfo nonvls Measure MEAS 95 Confidence lnteival What Do Do If My Data Violate the Parametric Assumptions Despair No Nonparametric statistical tests can be used a e no distri utional assump ions Less restrictive scaling assumptions Caveats Nonparametric are typically not as powerful as parametrictests 9 more likely to commit a Type II error Nonparametric tests do not exist for more complex designs ANOVA Planned and Unplanned posthoc Comparisons ANOVA identi es signi cant main effects an t r ctlons Em but does not identify which g5 speci c conditions actually j s22 Planned and unplanned Emu y comparisons allow you to tease out speci cally which our experimental conditions differ Nd n Use in Use Cell Status ANOVA Planned and Unplanned posthoc Comparisons Planned Comparisons arise from your hypotheses and are plannedbefore the data is analyzed if only a few conducted no correction for familywise error probability pyramiding is required EXAMPLE Using a cellphone while driving will increase breaking response time to a child entering the street when driving in busy traffic but not when driving alone ANOVA Planned and Unplanned posthoe Comparisons Unplanned comparisons are those that you choose to do a er analyzing your data they are not necessarily related to your hypotheses Example compare all poss ble pairs ofmeans to see which pairs signi cantly differ Must adjust uof t test to account for familywise error probability pyramiding W 1 1 DOC or Use posthoc tests that automatically adjust uScheffe test DunnetttestTukey test NewmanKeulstest Duncan test Fisher test


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Kyle Maynard Purdue

"When you're taking detailed notes and trying to help everyone else out in the class, it really helps you learn and understand the I made $280 on my first study guide!"

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.