Investigated changes in non-nutritive sucking behavior of premature infants when light stimulation was presented. Results generally support past evidence that premature infants are capable of making orienting and discriminative responses to visual stimuli and chronological age effects were indicated. (DP)

Series of experiments indicates that young infants are more sensitive to the spatial orientation of forms than was previously thought. This report is based on a dissertation submitted to the University of Strathclyde, August, 1969, in partial fulfillment of the requirements for the degree of MSc. (MH)

Reports on an experiment which involved 42 7 1/2-10 1/2-month-old infants playing a two-position hidden-object game. Results were interpreted to support and extend previous explanations of Stage IV of object-concept development. This report is a revised version of a paper presented at the biennial meeting of the Society for Research in Child…

The tracking behavior of Infants up to 5 months of age was studied using linear and circular trajectories, with partial occlusion of the trajectories. Results indicate that it is not until the age of about 16 weeks that infants can be said to be tracking a moving object as an object. (Author/WY)

Child-care practices generally reflect society as it was, not as it is coming to be, and child-care books contain little that is factual. (AB)

Consistent age changes suggest 2 overlapping developmental dimensions: (1) The ability to deal with visible versus invisible displacements, and (2) with nonsequential versus sequential displacements. Other findings are included. (MH)

This paper represents portions of a presentation given December 9, 1968, to the Denver Psychoanalytic Society and to the Division of Psychiatry of the University of Colorado Medical Center. (NH)

This paper was presented by the senior author at the Merrill-Palmer Institute Conference on Research and Teaching of Infant Development, February 13-15, 1969. (MH)