Toby is conducting an experiment in which he predicts an interaction between appearance and partner sex (same or different). One-half of the participants complete the study dressed in casual clothes, and the other half complete the study dressed in formal attire. All participants are observed in interaction with a same-sex partner and then with an opposite-sex partner. This is an example of a ___________factorial design.

Question

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This is an example of a mixed factorial design because it involves both between-subjects variables (appearance: casual vs. formal attire) and within-subjects variables (partner sex: same vs. different). Participants experience all levels of one factor (partner sex) but are assigned to only one level of the other factor (appearance), making it a mixed design.

Toby Is Conducting an Experiment in Which He Predicts an Interaction