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

Week 5 PSYC 368

by: Dawn Kohler

Week 5 PSYC 368 psyc 368,

Dawn Kohler
Truman State
GPA 3.5

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

These notes cover material over reliability and validity
psychological testing
Dr. Angela Knoverek
Class Notes
Psyc testing
25 ?




Popular in psychological testing

Popular in Psychlogy

This 5 page Class Notes was uploaded by Dawn Kohler on Sunday February 21, 2016. The Class Notes belongs to psyc 368, at Truman State University taught by Dr. Angela Knoverek in Fall 2016. Since its upload, it has received 23 views. For similar materials see psychological testing in Psychlogy at Truman State University.

Similar to psyc 368, at Truman State


Reviews for Week 5 PSYC 368


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: 02/21/16
2/15/16 Psyc testing Chapters 5 & 6 Reliability and validity Reliability- Consistency of measurement Reliability coefficient is an index of reliability a proportion that indicates the ratio between true score and total score Error Variance standard deviation squared Measurement error- what is the error of measured variables. Random (not predictable) or systematic (typically constant or proportionate predictable.) Know how to use it when interpreting test scores and talk about reliability and validity There is validity and limitations to projective tests. Test construction-variations within items and between tests. Item sampling or content sampling. Between forms. Test Administration- Sources of error may stem from the testing environment Also test taker variables such as pressing emotional problems physical discomfort, lack of sleep (slap happy?), and the effect of drugs or medication (loopy). Examiner related variables such as appearance (good or bad characteristics) and demeanor (method of interaction.) may play a role. Test Scoring and interpretation: computer testing reduces errors in test scoring but many tests still require interpretation like projective tests. Subjectivity in scoring can enter into behavior assessment. Other Sources of error variance: Surveys and poles margin of error sampling error. Test retest reliability: an estimate of reliability obtained by correlating pairs of scores from the same people on two different administration of the same test. Within six months.4Most appropriate for variables that should be stable over tie like personality and not appropriate for variables expected to change over time like mood. Estimates tend to decrease as time passes With intervals over 6 months the estimate of reliability is called the coefficient of stability. Time spent scoring and interpreting is not reimbursable. Your mood when grading can change while grading. Coefficient of equivalence- degree of relationship between forms Parrallel- variences of observed forms are equal Alternate forms- have adaptions or accommodations for people with disabilities. Check reliability by administering them to the same groupl Split half- do evens or add. Divide into equivalent haves Inter item consistency- how related are they items on the test. Coefficient alpha: 0-1 Inter scorer reliability- consistency between scorers. With regard to a particular. Must be within the one rank of truth helpful for licensing. Codes behaviors. CANS. It is often used with behavioral measures, guards against bias and idiosyncrasies in scoring. Coefficient of inter-score reliability-The scores from different raters are correlated with o e another. Autism codes by how close teacher and students were standing. Within four feet positive interaction no IRB. Got millions of dollars. Reliability estimates depends on what you are measuring. Look at the nature of test. Homogeneous or heterogeneous of items. Variation in behavior rating scales. Characteristic, ability or traite is presumed to be dynamic or static, range of test scores is not restricted? speed or power test? Criterion referenced (Must meet standards to move up or pass)? True-Score- reflects a test takers ability. Geralization theory Standard error of measurement SEM- Higher the reliability lower standard of error. Standard error off difference- between tests or between individuals on same test. Chapter 6 Validity. Reliabilty and not valid- person is always 15minutes late. Reliable and valid on target Unreliable and not valid all over. Validity- how well a test measures what it purports to measure in context. Validation- gather info about validity Content validity- is it covering what is supposed to. How adequately does it sample behaviors? Look at it with employment. If more than half of raters say it is valid it has some. Look at cultural. Criterion validity- standards of evaluation have to score a certain level. Don’t usually get to review questions. Relevant, valid and uncontaminated (not predicting who will pass). Drivers insurance is contaminated uses predictors. Concurrent validity: an index of the degree to which a test score is reatatied to some criterion measure obtained at the same time. Predictive validity: how the test score predicts criterion in the future. Operational defiant may lead to antisocial as an adult. Wouldn’t make a test for sexual offending risk. Construct- Within frame work Face validity- relevant of the test items. If it measures what is on the face of it high face validity. Self report high. Projective low. MMPI says that it is a problem already it is not predictive The validity coefficient: a correlation coefficient that provides a measure of the relationship between test scores and scores on the criterion measure. Validity coefficients are affected by restriction or inflation of range. Incremental validity: the degree to which an additional predictor explains something about the criterion measure that is not explained by predictors already in use To what extent does a test predict the criterion over and above variance Expectancy Data- how many do we expect to pass or fail. Letter grades, job settings annual performance review. Expaectancy charts help you know what job skills are looked for. Construct validity- the ability of a test to measure a therorized construct that purports to mesasure. Homogeneity, changes with age, pretest posttest, distinct groups.convergent evidence( construct validation direction of scores ). Bias- understand what is impacting the test from being acurrate and impartial. Rating error – misuse of rating scale. Teachers who score overly high or low scores. Halo effect- a tendency to give a particular person a higher rating than he or she objectively deserves because of favorable overall impression. Picking favorites, overall impressions. Example: Buying new album of favorite artist Fairness- the extent to which a test is used in an impartial just and equitable way.


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."

Amaris Trozzo George Washington University

"I made $350 in just two days after posting my first study guide."

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."

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

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.