Chapter 13, Problem 8P

A recent study examined how applicants with a facial blemish such as a scar or birthmark fared in job interviews (Madera & Hebl, 2011). The results indicate that interviewers recalled less information and gave lower ratings to applicants with a blemish. In a similar study, participants conducted computer-simulated interviews with a series of applicants including one with a facial scar and one with a facial birthmark. The following data represent the ratings given to each applicant.

1. a. Use a repeated-measures ANOVA with α = .05 to determine whether there are significant mean differences among the three conditions.
2. b. Compute η², the percentage of variance accounted for by the mean differences, to measure the size of the treatment effects.
3. c. Write a sentence demonstrating how a research report would present the results of the hypothesis lest and the measure of effect size.