Comments on 'Call for a follow-up study of experiments on long-term deprivation of human infants' by Micha Razel

Razel's examination of the early work of McGraw and the Dennises puts a heavy requirement on studies of single subjects and on some possible interpretations for which, unfortunately, documentation is insufficient. Further, the Dennises placed more emphasis on the autotelic quality of motor mastery than Razel notes. Rather than looking for these persons whose behavior was studied long ago, direct study of motor mastery by systematic provision of enrichment conditions during early development is more likely to be instructive and a better use of scientific resources.