Textbook Problem

What is the defining characteristic of a repeated-measures or within-subjects research design?

To determine

The defining characteristic of a repeated-measures or within-subjects research design.

Answer to Problem 1P

The difference of score of participants in two treatments is the defining characteristic of a repeated-measures or within-subjects research design

Explanation of Solution

Justification:

Since, repeated-measures research design consist two treatments applied on a group of participants. Therefore, two scores are measured, one for each treatment corresponding to each participant. Then differences of scores are calculated corresponding to each participant. Therefore, difference of score is the defining characteristic of a repeated-measures or within-subjects research design.