The second of a three volume report on a University of Kansas approach to developing quantitative measures of motor and perceptual motor functioning in nonhandicapped and severely/multiply handicapped infants and young children presents interobserver reliability results from the measures described in volume 1. Some studies also include a limited…

Three studies that applied quantitative procedures to measure motor and sensory/motor acquisition among handicapped and nonhandicapped infants and children are presented. In addition, a study concerning the replication of the quantitative procedures for assessing rolling behavior is described in a fourth article. The first study, by C. Janssen,…