Ninth Edition CoverGraziano & Raulin
Research Methods (9th edition)

Glossary Items Starting with "W"

waitlist control group
A group of people in a treatment study who serve initially as a no-treatment control group with the understanding that they will receive the treatment later.

within-groups variance
Variability among participants within a particular group or condition. It provides a basis for comparing mean differences between groups in most statistical procedures.

within-subjects design
Research design in which individual differences are controlled by having the same participants tested under all conditions.

within-subjects factorial
A factorial design in which each participant appears in each condition.

within-subjects factors
Independent variables in factorial designs in which each participant is tested under all conditions.