Question

When would you want to do a between-subjects design as opposed to a with-in subjects design?

Answer 1

A between-group design is an experiment that has two or more groups of subjects each being tested by a different testing factor simultaneously. These are used in both experimental and non-experimental research designs. This type of design is used when a researcher wants to compare two or more treatment conditions. A between-subjects experimental design is sometimes called an independent measures experimental design because there is only one score for each individual.

Example: One group might recieve an experimental drug, while another group of participants recieves a placebo control