PSYC 2002 Lecture Notes - Lecture 11: Repeated Measures Design, Type I And Type Ii Errors, Null Hypothesis

• School: Carleton University
• Department: Psychology
• Course: PSYC 2002
• Professor: Steven Carroll

Document Summary

In this experiment, i was interested in how rt changes as a function of stimulus complexity. Each p would make a series of 2afc decisions and then a series of 4afc decisions and i would compare rts for the two levels. Repeated measures design: also known as a within-subjects design, two separate scores are obtained for each individual in the sample. The same participants are used in all treatment conditions. As such, there is no risk of the treatment groups differing from each other in any truly significant way. Approximates the advantages of a repeated measures design, except: Two separate samples are uses: each individual in a sample is matched one-to-one with an individual in the other sample. They are matched on relevant variables: participants are not identical to their match. You have to justify why you believe the samples are equivalent with respect to some specific variables. The difference column is what we are interested in!!