Chapter13

Question 1

Beer-goggles effect

Answer 1

the phenomenon that people of the opposite gender (or the same, depending on your sexual orientation) appear much more attractive after a few alcoholic drinks.

Question 2

Factorial ANOVA

Answer 2

an analysis of variance involving two or more independent variables or predictors.

Question 3

Independent factorial design

Answer 3

an experimental design incorporating two or more predictors (or independent variables) all of which have been manipulated using different participants (or whatever entities are being tested).

Question 4

Interaction graph

Answer 4

a graph showing the means of two or more independent variables in which means of one variable are shown at different levels of the other variable. Unusually the means are connected with lines, or are displayed as bars. These graphs are used to help understand interaction effects.

Question 5

Mixed design

Answer 5

an experimental design incorporating two or more predictors (or independent variables) at least one of which has been manipulated using different participants (or whatever entities are being tested) and at least one of which has been manipulated using the same participants (or entities). Also known as a split-plot design because Fisher developed ANOVA for analysing agricultural data involving ‘plots’ of land containing crops.

Question 6

Related factorial design

Answer 6

an experimental design incorporating two or more predictors (or independent variables) all of which have been manipulated using the same participants (or whatever entities are being tested).

Question 7

Simple effects analysis

Answer 7

this analysis looks at the effect of one independent variable (categorical predictor variable) at individual levels of another independent variable.