Relations among maternal stress, cognitive development, and early intervention in middle- and low-SES infants with developmental disabilities.

Relations between maternal stress and the development of infants with handicaps was examined in 72 middle-SES and 72 low-SES families who attended a weekly early intervention program. Measures of maternal stress and development of infants were obtained 10 months apart. Regression analyses predicted 81% of variance in later developmental level with initial Bayley MA, initial Mental Development Index (MDI), SES, initial stress, early intervention participation, and SES x Initial Stress x Attendance interaction. Subsequent maternal stress was predicted (42% variance explained) by initial stress, attendance, initial MDI, number of intervention agencies and MDI x SES x Attendance. Results were interpreted in terms of a transactional model.