Rhonda designs an experiment in which half of her students are randomly assigned to view a sad movie and half to view a comedy. All of the students then rate their liking for the school at one, two, and three weeks after viewing the movie. This design is:
A) An interaction design
B) A nonequivalent posttest-only design
C) A within-participants design
D) A factorial design based on a mixed model

Question

Quizplus · Accepted Answer

This design is a factorial design based on a mixed model because it involves two independent variables: type of movie (sad or comedy) and time (one, two, and three weeks after viewing). The design includes both between-subjects (type of movie) and within-subjects (time) factors.

Rhonda Designs an Experiment in Which Half of Her Students