Question
(Both by hand and in SPSS) Shrauger (1972) conducted an experiment that compared the effect of an audience on the performance of participants with high
(Both by hand and in SPSS)
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
3, 6, 2, 2, 4, 7
9, 4, 5, 8, 4, 6
Low
7, 7, 2, 6, 8, 6
10, 14, 11, 15, 11, 11
For the by-hand part, answer the following three questions: does there appear to be 1) a main effect of self-esteem, 2) a main effect of alone/audience, and 3) an interaction between the two?Show your work to answer whether these effects appear to exist.Then, let SPSS do the hypothesis tests to see if the effects really are significant.
Also, calculate the appropriate effect sizes for each of these three tests.
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