TuTh – 4:00-5:15 Psych 241 – Methods Lab section 03.

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TuTh – 4:00-5:15 Psych 241 – Methods Lab section 03

Hi my name is… Levi (Lay-vee) Adelman (Aye-dell-man)

Final Papers and Tests At the end of class, I will call you up one by one, and we’ll exchange tests for final papers. I don’t know when I will have them ready for you, but I will try to look at them and grade them ASAP.

Writing Points Title: Catchy and descriptive. To be descriptive, you need two things: Relevance Specificity Introduction Upside down triangle One step up: real-world

Reliability and Validity Reliability: Consistency of the results of a measure. Validity: Is the measure ‘on target’? Is it testing what you wanted it to test?

Reliability and Validity

Tests of reliability: Test-retest reliability: Correlation of scores from the SAME TEST given at two different times. Equivalent forms reliability: Correlation between EQUIVALENT FORMS of the same test given to the same people at the same time.

Reliability and Validity Split-half reliability: Correlating TWO HALFS of the same test given to the same people at the same time.

Reliability and Validity Tests of validity: Predictive: Can we say that what we are measuring PREDICTS something in the future? Concurrent: Can we say that what we are measuring PREDICTS something in the present (concurrently)? Construct: Does the measure align with the behavior associated with the construct me are measuring? Content: Does the measure align will all aspects of a construct?

Reverse scoring Having reversed order items: Why? Acquiescence bias: Extreme responses bias: Issues to look out for: Misinterpret/misunderstand Miscode http://www.measuringusability.com/positive-negative.php

Survey project. Literature review: Issues? Questions? Other item suggestions? Other demographics?

Homework Send me a document with the articles you found. I will send you a document with all of the items we suggested and I want you to do four things: Rate the top 20 items, as you see them. Suggest which of those need to be reverse-coded, if any, to make things equal. Choose 8 demographics questions that you think are the most important. Think about a hypothesis you are interested in that involves TWO demographics questions (independent variables) Do the reverse coding exercise on page 56 of the CP.

Contact Information ladelman@psych.umass.edu Tobin 626 Office hour: Tuesdays from 1-2pm

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