Suppose the low-self-esteem participants from Shrauger's (1972) audience study were brought back in 2010 to repeat the same cognitive task.The data still represents the number of errors made by each participant (3 participants in each condition).This time, assume the same 3 participants experience each of the 4 conditions:

Alone

With audience

Year

1972

8, 7, 2

12, 14, 11

2010

9, 6, 5

9, 6, 4

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