Factorial Designs

Question 1

Mixed design

Answer 1

Multiple IVs, at least 1 is between and 1 is within.

Question 2

Factorial design

Answer 2

manipulate at least 2 IVs in the same experiment. Factor - an independent variable. Level - the number of conditions for that factor.

Question 3

2x2 Design

Answer 3

2 levels of the first IV, and two levels of the second IV.

Question 4

4x2 designs

Answer 4

2 IVs, one with 4 levels and one with 2 levels. 8 conditions if between-subjects.

Question 5

Main effects

Answer 5

effect of one variable ALONE. Evaluate by taking the sum or average of levels of that variable.

Question 6

Interaction

Answer 6

effect of the two variables TOGETHER, one factor modifies the effects of the second factor. Evaluate by taking the difference.

Question 7

Graph results of Mixed design

Answer 7

Parallel lines - at least 1 main effect, no interaction.
V-shape - at least 1 main effect, plus interaction.
X-shape - only interaction, no main effects.