Replications and robustness checks are key elements of the scientific method and a staple in many disciplines. However, leading journals in developmental psychology rarely include explicit replications of prior research conducted by different investigators, and few require authors to establish in their articles or online appendices that their key…

Longitudinal analyses on normal versus impaired functioning across 7 domains were conducted in children who had experienced profound institutional deprivation up to the age of 42 months and were adopted from Romania into U.K. families. Comparisons were made with noninstitutionalized children adopted from Romania and with nondeprived within-U.K.…

Two studies examined the ability of a peer play scale, based on the Howes Peer Play Scale, to assess developmental sequences in children's play with peers from the infant through the preschool periods. The frequency and proportion of play forms, and the ages at which they emerged, varied as a function of the children's child care setting. (LB)