PSYC 2030 Lecture Notes - Lecture 7: Dependent And Independent Variables, Selection Bias, Statistical Conclusion Validity
10 Apr 2018
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Different people complete each condition -some people are getting the free starbucks coffee, and some are getting the decaf coffee Same people complete every condition - you get the starbucks coffee, and later on, you also get the decaf coffee. Good when participants are rare or expensive. Because it is the same exact people in both conditions, then we have the same make up, gender, self esteem etc they"re all the same. Iv is subject variable (e. g. individual difference like age, personality, gender) Need uninformed participants in all conditions (deceptions) - sometimes, if they see both conditions, they will figure out what you"re studying. Participants in one condition would affect responses in other (matched stim) Want only difference between conditions to be manipulated iv of interest. Condition a in morning, condition b in afternoon. More morning people sign up for condition a. People in condition a are higher in stability (c, es, a)
