Question

​A researcher plans to conduct a research study comparing two treatment conditions with a total of 20 participants. Which of the following designs would produce 20 scores in each treatment? Group of answer choices

An independent-measures design​
​A repeated-measures design ​
A matched-subjects design ​
All of the other options would produce 20 scores in each treatment.

Answer 1

A repeated-measures design

Step-by-step explanation:

Repeated measures design is a research design that involves multiple measures of the same variable taken on the same or matched subjects either under different conditions or over two or more time periods. For instance, repeated measurements are collected in a longitudinal study in which change over time is assessed.