Two Factor Experiments

More than one Cause

More than one Cause

Two Factor Designs

The Effect of Factor A

The Effect of Factor B

The Combined Effects of Factors A and B

Main Effects

Interactions

Partitioning the Variance:
Two Factor Designs

Partitioning the Variance:Two Factor Designs

Partitioning the Variance: Two Factor Designs

Partitioning the Variance: Two Factor Designs

Partitioning the Variance: Two Factor Designs

Partitioning the Variance: Two Factor Designs

Partitioning the Variance: Two Factor Designs

Graphing a two Factor Design

Graphing a two Factor Design

Graphing a two Factor Design

Threats to Internal Validity

Selection x maturation interaction

Partitioning the Variance:
Two Factor - Repeated Measures Designs

Partitioning the Variance:Two Factor Repeated Measures Designs

Partitioning the Variance: Two Factor Repeated Measures Designs

Anova Summary Table: Two Factor Repeated Measures Designs

Anova Summary Table: Two Factor Repeated Measures Designs

Anova Summary Table: Two Factor Repeated Measures Designs

Anova Summary Table: Two Factor Repeated Measures Designs

Anova Summary Table: Two Factor Repeated Measures Designs

Anova Summary Table: Two Factor Repeated Measures Designs

Anova Summary Table: Two Factor Repeated Measures Designs

Example:  Haskell, 1995

Example:  Haskell, 1995

Partitioning the Variance:
Two Factor - Mixed Designs

Partitioning the Variance:Two Factor Mixed Designs (Repeated Measures on B)

Partitioning the Variance: Two Factor Mixed Designs (Repeated Measures on B)

Anova Summary Table: Two Factor Mixed Designs (Repeated Measures on B)

Anova Summary Table: Two Factor Mixed Designs (Repeated Measures on B)

Anova Summary Table: Two Factor Mixed Designs (Repeated Measures on B)

Anova Summary Table: Two Factor Mixed Designs (Repeated Measures on B)

Anova Summary Table: Two Factor Mixed Designs (Repeated Measures on B)

Anova Summary Table: Two Factor Mixed Designs