A critical challenge within early childhood policy is to increase the capacity of early childhood education and care systems to intervene effectively and sufficiently early to improve the learning and development outcomes of marginalised children. An initial step is to reliably identify young children at risk of poorer learning outcomes. This…

Results of the research reported in this paper suggest that the development of mentally handicapped preschool children may not be measurable in distinct cognitive, social/emotional, physical motor, and language areas. This research further indicates that a testing instrument designed to measure the generalized factors of intelligence and social…