The developmental psychology of mathematical thinking and the clinical interview method can make major contributions to education by transforming the process of formative assessment--the attempt to use information concerning student performance, knowledge, learning potential, and motivation to inform instruction. The clinical interview is a…

The low predictive validity of infant tests is discussed in light of current issues in developmental psychology. Considers continuity and discontinuity in the development of early cognitive competence, intellectual heterogeneity problems, and individual-environment transactions. Provides suggestions for increasing predictive validity and indicates…

From a longitudinal sample of 202 children studied from birth to 8 years of age, two extreme groups were selected. One group had a more rapid development than normal and the other a slower development. A relationship between the development of abilities and weight and height increases was found for boys aged 4 weeks to 2 years and between the…

Notes that Halford's book does not really address children's own understanding but rather the psychologist's attempt to understand children from the outside. Discusses the five major sets of ideas at the core of Halford's explanations of capacity, complexity/dimensionality, development, and learning. Examines two arguments against Halford's…

Comments on Moshman's article in this issue concerning questions about adolescent reasoning, maturity, and rights to intellectual and other freedoms. Discusses the implications for public schools, government, and parents. Suggests that the evidence needed for a full rebuttal of the adolescent-as-child view involves demonstrated adultlike…