To examine the effects of an 8-week parent/child cognitive behavioral treatment intervention on physiological, symptomatic, and behavioral indices of asthma, a comparison was made of results on 1-year pre-intervention and 1-year post-intervention assessments. The first year of the study involved a retrospective collection of medical data for 18 children (9 treatment and 9 matched controls); identical measures were gathered after treatment for the second year follow-up. Subjects (14 male and 4 female) ranged from 5.5 to 12 years of age. Therapists were seven pediatric psychology trainees, all experienced in behavioral medicine. Treatment was standardized across therapists by procedural outlines for each session, standardized relaxation tapes, weekly therapists' meetings throughout the study, and feedback from the principal investigator. Major goals of the study were (1) to improve daily pulmonary functioning; (2) to improve the symptomatic features of asthmatic attacks; and (3) to assess compliance with medications, to decrease children's manipulative or maladaptive behaviors prior to and during an asthma episode, and to increase school attendance. Additional goals for children included assessment of locus of control, self-image, and coping ability. The parent/child training program was found to be effective in maximizing daily pulmonary functions, decreasing symptomatic features of asthma, and increasing children's and parents' behavioral compliance and positive personal perceptions of the controllability of asthma. (RH)