“…Questionnaires were not only utilized for measuring dream recall frequency but various aspects of dream content (e.g., Domino, 1982; Gruber, 1988; Bernstein & Roberts, 1995; Kahlmeyer & Chang, 1997; Kroth et al, 1999; Zadra & Nielsen, 1999; Agargün et al, 1999; Bruni et al, 1999). First, the questionnaire approach is simple and easily applicable to a large sample and, second, Bernstein, Belicki and Gonzales (1995) argued that questionnaire items are more valid measures for trait aspects of dream life than content analysis of diary dreams or dreams obtained from laboratory awakenings.…”