Question: 1) What comparisons demonstrate the greatest significant difference between these groups? 2) If data was found to be skewed, would it be positive (right) or

1) What comparisons demonstrate the greatest significant difference between these groups?

2) If data was found to be skewed, would it be positive (right) or negative (left)?

Research participation over time (N 89)

Variables n Median (0-33) Mann-Whitney U

Pretest: Median z p-value

Control group: 42 5.80 -0.07 0.944

Experiment group: 49 6.00

T2:

Control: 42 4.00 -3.75 0.000

Experiment: 49 8.00

T3:

Control: 42 4.50 -2.96 0.003

Experiment: 49 9.00

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