The data below were from the same 25-year-old participants described in How It Works 14.1, but now the scores represent the oldest age that would be acceptable in a dating partner.

25-year-old women seeking men: 40, 35, 29, 35, 35

25-year-old men seeking women: 26, 26, 28, 28, 28

25-year-old women seeking women: 35, 35, 30, 35, 45

25-year-old men seeking men: 33, 35, 35, 36, 38 

a. What are the independent variables and their levels? What is the dependent variable?

b. Draw a table that lists the cells of the study design. Include the cell means.

c. Conduct all six steps of hypothesis testing.

d. Is there a significant interaction? If yes, describe it in words, indicate whether it is a quantitative or a qualitative interaction, and draw a bar graph.

e. Compute the effect sizes R², for the main effects and interaction. Using Cohen’s conventions, interpret the effect-size values.