Recognizing that the etiologies of some major mental illnesses may be in the physical domain, this study described and compared the motor performance of 27 preschool children enrolled in mental health programs with 27 children enrolled in Project Head Start, a non–mental health program. The two groups were matched for age, race, and sex. The Gross and Fine Motor scales of the Peabody Developmental Motor Scales were administered to all subjects. On both measures the children enrolled in mental health programs scored significantly lower than the children enrolled in Project Head Start. In addition their scores were more variable. The results of this study support other findings suggesting that developmental delays may be characteristic of children with emotional disturbances.