| Schulman, P; Castellon, C; Seligman, M E (1989) Assessing explanatory style: the content analysis of verbatim explanations and the Attributional Style Questionnaire. Behav Res Ther 27:505-12 |
| Burns, M O; Seligman, M E (1989) Explanatory style across the life span: evidence for stability over 52 years. J Pers Soc Psychol 56:471-7 |
| Peterson, C; Seligman, M E; Vaillant, G E (1988) Pessimistic explanatory style is a risk factor for physical illness: a thirty-five-year longitudinal study. J Pers Soc Psychol 55:23-7 |
