The Minnesota Infant Development Inventory in the developmental screening of high-risk infants at eight months.

Abstract
A parent-completed questionnaire, the Minnesota Infant Development Inventory (MIDI) (Ireton and Thwing, 1980), was compared to Bayley Mental Scale scores for 44 male and 42 female high-risk 8-month-olds. Categorization of infants as delayed or not delayed on each of the five subscales of the MIDI showed good overall agreement (81% to 90%) with Bayley findings. Categorization of infants based on their lowest MIDI subscale score yielded good sensitivity (85%) in detecting delay and fair specificity (77%) in identifying normal development. Multiple regression analysis indicated that the Gross Motor scale score was the strongest predictor of performance on Bayley Mental Scale items. Results indicate the potential utility of the MIDI as a screening tool for use in follow-up programs monitoring the development of high-risk infants over time.