Having one's funding cut in the course of conducting a longitudinal study has become an increasingly real challenge faced by developmental researchers. The main purpose of the current work is to propose "post hoc" planned missing (PHPM) data designs as a promising solution in such difficult situations. This study discusses general…

This paper suggests that, at present, a science of natural developmental processes does not exist because few studies are concerned with development as it transpires in naturalistic environments and because truly developmental data are not collected or analyzed. (Author/JMB)

Suggests that designing home-based interventions as longitudinal development research (rather than outcome evaluation) can provide valuable knowledge about ecological factors that affect the development of competence in parents and children and about effective ways to support families. (Author/MP)

Identifies interaction effects as the defining feature of resilience and resilience research. Maintains that interaction effects are responsible for the unique contributions of this field of study to the understanding of human development. Suggests that the methodological and statistical challenges posed by interaction effects do not, by…

Argues that dynamic systems theories may illuminate processes whereby public policy influences child development and highlight gaps in current relevant research. Discusses five principles of dynamic systems theories using examples from research addressing effects of current antipoverty and welfare policies on children. Concludes by suggesting…

By using a modified Color Meaning Test in which alternative evaluative criteria (animal type as well as animal color) are available, this study examines the hypothesis that children evaluate the color white as positive and the color black as negative. Results with primary school children suggest that the addition of other criteria decreases the…

Piaget's class-inclusion task was revised class-inclusion tasks were administered to 64 kindergarten and 64 first-graders. Each of the revisions enhanced performance as compared with Piaget's standard procedures. These results are considered in terms of two possible interpretations. (Author/SDH)

This critique points out weaknesses regarding the test measures used by Munsinger and Douglass and questions the validity of these measures for the ages of the children used in their study. (JMB)

The conventional analysis of variance applied to designs in which each subject is measured repeatedly requires stringent assumptions regarding the variance-covariance structure of the data. This paper considers alternatives when heterogeneity of covariance exists, including nonparametric tests, randomization and matching procedures, Box and…

The influence of maternal stimulation on infant exploratory behavior was examined in both a cross-sectional/ correlational study and an experimental study, in order to overcome the limitations on making causal claims that attend most research into maternal influence on infant development. (Author/DB)

Addresses three issues concerning the assessment of the overrating and underrating of academic competence: (1) the impossibility of separating effects of overrating and underrating from effects of perceived and actual competence; (2) the questionable validity of Connell and Ilardi's method; and (3) the proposal of a new method and its implications…

A series of free-recall experiments was conducted in which preschool children were tested repeatedly over many sessions. Various experimental manipulations were interspersed with baseline sessions along the lines of the single-subject design commonly used in free-operant studies. (Author/JMB)

Response to article PS 502 099. (MB)

Nedler and Sebera's article appeared in Child Development, vol 42, 1971, p 259-267. A further comment appears in PS 502 100. (MB)