Existing data sets can be an efficient, powerful, and readily available resource for addressing questions about developmental science. Many of the available databases contain hundreds of variables of interest to developmental psychologists, track participants longitudinally, and have representative samples. In this article, the authors discuss the…

We discuss an emerging program of research on a particular aspect of mathematics learning, students' learning through their own mathematical activity as they engage in particular mathematical tasks. Prior research in mathematics education has characterized learning trajectories of students by specifying a series of conceptual steps through which…

Individuals with Down syndrome are predisposed to show a specific behavioural phenotype, or a pattern of strengths and challenges in functioning across different domains of development. It is argued that a developmental approach to researching the Down syndrome behavioural phenotype, including an examination of the dynamic process of the unfolding…

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)

In this article, we argue for a change in how researchers study motivation to learn. We believe that research can provide better explanations of the origins and outcomes of behavior, and thus be more useful, if we focus on how motivation develops and why it changes. We suggest reframing motivation research in education by extending the current…

Criticizes studies of egocentric development in children using cutaneous perception procedures. Also questions study contribution to the understanding of the development of decentering. (Author/SDH)

Argues that a better understanding of developmental processes is provided by three types of operant research -- laboratory behavioral descriptions, descriptions of naturalistic behavior-environment interdependencies, and predictive naturalistic studies. The usefulness of these processes are examined in light of the goals of life span developmental…

Discusses procedures and considerations involved with secondary analyses of longitudinal databases. Procedures involve (1) formulating questions; (2) creating a feasibility matrix; (3) reformulating questions; (4) creating derived variables; (5) performing data reduction; (6) analyzing data; and (7) interpreting results. Problems associated with…

Researchers in the fields of cognitive and language development have made less use of large-scale longitudinal designs and of person-centered approaches to data analysis than have researchers in the fields of social and personality development. It is argued that differences among domains of developmental psychology in the research methods employed…

Suggests that testing developmental ordering hypotheses is difficult because rare use of ratio scales prevents direct comparison of measures. Demonstrates that the observed data pattern is constrained by the underlying relationship--although observed data pattern may not reflect the exact relationship, it limits possible relationships. Shows the…

ANOVA designs are used for description and/or explanation of developmental phenomena. These consist of taking any two of age, cohort, or time of measurement as independent variables. Employment of ANOVA has led researchers down blind alleys. Regression techniques are more useful. (Author)

Scientific rigor, including research design and data analysis, has been established and can now be applied to careful investigations outside the laboratory. This rigor can assist in studying the areas of human development and behavior. Without it, research in natural environments will continue to be inadequate and inaccurate sources of knowledge.…

A review of the major literature examining human work behavior from the perspective of developmental psychology indicates that, although many issues pertaining to the meaning of the concepts of change and development are still unresolved, a great potential exists for cross-fertilization between developmental and vocational psychology. Vocational…

The effectiveness of the elementary level guidance program, Developing Understanding of Self and Others (DUSO), is assessed. Intended for use by counselors of children ages 5-8, the DUSO program is designed to help children understand social-emotional behavior through listening, inquiry, discussion, and role play. The DUSO Affectivity Device,…