Sleep parameters of type A and B scoring college students.

162 subjects, half of whom scored between 310 and 420 and half of whom scored between 184 and 256 on the Survey of Work Style questionnaire, participated in this study. The former group was defined as Type A scorers and the latter as Type B scorers. Type A scorers had more trouble falling asleep, had more nightmares, and spent less time asleep than did Type B scorers. However, there was no difference between the two groups in the amount of dream recall or on the morningness/eveningness continuum.