Rasch calibration procedures were applied to item-response data for the 1,262 infants and toddlers comprising the standardization sample for the Mental Scale of the Bayley Scales of Infant Development. Analyses tend to confirm the psychometric integrity of the instrument. (Author)

Two forms of the Battelle Developmental Inventory, intended for use with handicapped and nonhandicapped children ages 0-8, are examined. The instruments measure personal-social, adaptive, motor, communication, and cognitive skills, for use in screening, diagnosis, identification, assessment, and program evaluation. The paper discusses test…