Four, 10-min videos were used. The videos depicted a 22 year-old woman portraying a graduate teaching assistant giving an introductory class lecture. She discussed topics the course would cover and the requirements for the course. In two of the videos she dressed casually in jeans and a sweater, giving an energetic and a subdued lecture, respectively. The other two videos showed her professionally dressed in a long dress, giving an energetic and a subdued lecture, respectively.
All participants read and signed an informed consent form.
The entire experimental session took approximately 30 min. A three-way analysis of variance was used to evaluate the effects of instructors' appearance, lecture style and sex of the participant on the student motivation score. Group means are shown in Table 1. The results of this study indicate that women were significantly more motivated to learn than were men. The studies conducted by Erdle et al.