Shrauger (1972) conducted an experiment that compared the effect of an audience on the performance of participants with high and low self-esteem. Hypothetical data from this experiment are as follows. The data represents the number of errors made by each participant (6 participants in each condition):

Alone

With audience

Self-esteem

High alone

3, 6, 2, 2, 4, 7

high w audience

9, 4, 5, 8, 4, 6

Low alone

7, 7, 2, 6, 8, 6

low with audience

10, 14, 11, 15, 11, 11

(Using SPSS) Is there 1) a main effect of self-esteem, 2) a main effect of alone/audience, and 3) an interaction between the two?