feedback Kind

Technique

Independent Variable

Dependent Variable

Definition

# of IVs

Fixed or Random

# of levels in IV (If Fixed)

Between or Within Subjects

# of DVs

Fixed or Random

One Sample t-test

 Compares a sample mean to a known or hypothesized population mean.

 1

 Fixed

 1

 N/A

 1

 Random

Independent Samples t-test

 Two groups of different people compared

 1 (only one manipulation)

 Fixed, people are in one group or the other

 2 (t-tests are always only 2 groups)

 Between (different people in each group)

 1 (just one outcome per t-test)

 Random (outcome can take on any value)

Paired Samples t-test (AKA repeated measures t-test or dependent measures t-test)

 Compares two measurements from the same participants or matched pairs.

 1

 Fixed

 2

 Within

 1

 Random

One-Way ANOVA

 Tests for mean differences among three or more independent groups

 1

 Fixed

 2+

 Between

 1

 Random

Two-Way ANOVA

Examines the effects of two independent variables on a single outcome, including interactions

 2

 Fixed

 2+

 Between

 1

 Random

Repeated Measures ANOVA

Tests for mean differences when the same participants are measured three or more times.

 1

 Fixed

 3+

 Within

 1

 Random

Factorial ANOVA (can also be called a Mixed Factors Factorial ANOVA)

Combines at least one between-subjects factor and one within-subjects factor to test for main effects and interactions.

 2+

 Fixed

 Depends on Design (At least 2 levels per factor e.g., 2×2, 2×3 designs)

 Mixed

 1

 Random