1. Review Questions V
A psychologist suspected that even if only two colours were used in the Droop experiment there
would be both interference and facilitation: that the condition means would be different. To explore
his hypothesis, he tested 24 subjects, 8 in each of the three Droop conditions: control, congruent,
and incongruent.
Interference is the difference between the control and the incongruent conditions. Facilitation is the
difference between the control and the congruent conditions. First analyze this as a completely
Randomized Design. Provide all descriptive stats, figures, test of assumptions, and contrasts.
Do the data below support his hypothesis?
control congruent incongruent
2. Now analyze it as a Repeated Measures design. Each row is to be considered a subject.
3. What are the differences between the Newman-Keuls, the Tukey HSD, and the Tukey WHS tests.
Why would the different test exist?