In his 1979 "Human Development" article reprinted in this anniversary issue, James Wertsch presented an approach to genetic analysis of the shifting regulation of problem-solving behavior in early childhood. In my reflections on Wertsch's seminal contribution, I discuss ways that subsequent inquiry built upon ideas he elaborated in the…

Argues that ontogenetic and phylogenetic theories are related and that such a coupling can be established only in reference to a metatheory. The metatheory is construed in terms of a combination of logical coherence and requirements necessary for generalization as well as comprehensive, philosophical representations of living beings (e.g.,…

Argues for unifying the conceptual frameworks of theories of evolution so that problems and their solutions in one theory may be transposed and explored in the others. The argument is used to reconsider the mutationist and Darwinian theories of evolution in the light of Piaget's nonstandard theory of evolution. (Author/RH)

Particular reference is made to change seen as either a discrete or a continuous process. This topic is discussed in relation to progress and modern trends in biology and physics. Additionally discussed is the development of children's understanding of the process of change in physical and biological phenomena. (Author/RH)

An analysis of views of early socialization and sociogenetic theorists will provide a foundation for regarding internalization as a process involving transformations of semiotic material imported from the social world into personally constructed subjective experience. Argues that researchers embracing the sociogenetic tradition should make…

Agrees with the distinction, made by Lawrence and Valsiner in the previous article, between theoretical approaches concerning internalization that view internalization as cultural transmission and internalization as constructive transformation. Concurs with criticisms of these approaches, and questions the need for the notion of internalization in…

Discusses the conditions for validating customary phylogenetic procedures. Concludes that the requisites of homogeneity and completeness for proved short lineages seem satisfied by the Hennigian but not the Haeckelian procedure. The epistemological antinomy of the two procedures is emphasized for the first time. (Author/RH)

Recognizes some of the limitations of the field of behavioral genetics, but argues that the methods employed in multivariate behavior genetics and developmental behavior genetics have become the dominant paradigms in the field. (MDM)

Supports Gottlieb's conclusion that developmental behavior genetics is unsuitable for analyzing developmental coactional processes because it does not concern itself with mechanisms through which genotypes are transformed into phenotypes. But maintains that modern behavior genetics provides an indispensable tool to analyze nonlinear epigenetic…

Rebuts the Burgess and Molenaar commentary in this issue on the authors' paper concerning sociobiology and human development, maintaining that genes (nature) cannot usefully be construed as independent of the coactional developmental system of which they are a part. (BB)

Describes the methodological and statistical criteria neccessary for adequate measurement of organism-environment correlations and presents a path anaysis model as an approach to the study of these correlations. (BD)

Criticizes the application of the statistical procedures of the population-genetic approach within evolutionary biology to the study of psychological development. Argues that the application of the statistical methods of population genetics--primarily the analysis of variance--to the causes of psychological development is bound to result in a…

Argues that Gottlieb rejects population sampling and statistical analyses of distributions as he proposes that his experimental brand of mechanistic science is the only legitimate approach to developmental research. Maintains that Gottlieb exaggerates developmental uncertainty, based on his own research with extreme environmental manipulations.…

Argues that a truly developmental behavior genetics will have to go beyond the traditional quantitative approach of population genetics in order to produce developmental explanatory content about differences and similarities in developmental outcomes. (MDM)

The pattern of parent-child correlations in adoption studies has long been interpreted to suggest substantial additive genetic variance underlying variance in IQ. The studies have frequently been criticized on methodological grounds, but those criticisms have not reflected recent perspectives in genetics and developmental theory. Here we apply…