Data collection
Almost all freshmen participated resided in the university dormitories. Subjects were randomly divided into two equivalent groups. One group received format A while the other obtained format D. Each subject was delivered a cover letter, a content format and a questionnaire to his room. A week later, the tests and questionnaires were collected from their rooms. Four hundred and twenty-three questionnaires were returned (91.95%). The completed questionnaires from 415 respondents (90.22%) were used for data analysis.