Report of a set of tentative estimates of the economic impact of infant malnutrition in Santiago, Chile. The economic costs and benefits of alleviating malnutrition are discussed in terms of their policy implications. (EH)

The essential components of self-paced systems are frequently prohibitive in cost for implementation for all students. Selection of students who can profit most from individualized programs can be made by choosing students in upper and lower extremes in mental ability who possess certain elements in their cognitive styles. (Author)

The author argues that no "hard" data exists on genetically based differences in intelligence among human groups. IQ measures the heritability of IQ, and statistical inaccuracies in reported studies are discussed and questioned. The current interest in biological determinism of intelligence is trivial; individuals can not be judged by group means.…

Three experiments are reported investigating experts' and laypersons' conceptions of intelligence. In the first experiment, persons studying in a college library, entering a supermarket, and waiting for trains in a railroad station were asked to list behaviors characteristic of either "intelligence,""academic intelligence,""everyday intelligence,"…

The relationship between two personality characteristics, creativity and risk-taking, was investigated in fifth grade students, ages 9-11 years (N equals 291). Creativity was explored by examing the factors of ideational fluency, spontaneous flexibility, originality, and elaboration. Risk-taking, studied in a classroom testing situation, was…

Investigated were psychological differences between 24 mongoloid and 56 nonmongoloid retarded Ss (mean age 17 years) by means of analyses of covariance and a discriminant analysis. After the covariance adjustments, only the psychomotor factor differed significantly between mongoloid and nonmongoloid groups. The visual perception factor was the…

This editorial suggests how the approaches of differential psychology and information processing psychology should be combined to study intelligence. Methods reviewed include factor analysis, componential analysis, and computer simulation. Guidelines for the specification of subtheories of intelligence, as well as future theories and methods for…

The role of mental age (MA) and visual-perceptual ability in number concept development was examined with 48 nonretarded and retarded children from regular school settings. (Author)

A reevaluation of a number of experiments suggests that normal and retarded persons differ on short-term memory tasks from the time of initial stimulus exposure. The hypothesis that memory differences are due to differential encoding as a result of more adequate rehearsal by the normal subjects is unacceptable. (Author/BW)

Two studies examined differences in intellectual ability associated with masculinity and femininity in high school and college students. Available from: Ablex Publishing Corporation, 355 Chestnut Street, Norwood, New Jersey 07648. (CL)

Examined the level of perceptual differentiation of 42 young adult drug addicts. Analysis of variance showed that addicts, like alcoholics, were less perceptually differentiated than normals. Correlational and/or multivariate procedures yielded significant relationships between differentiation, verbal and abstraction abilities, likelihood of…

The Rorschach was given to 60 school children in two designs: chronological age (CA) and mental age (MA) orthogonal and CA=MA. Responses were scored for Form Accuracy, Complexity, Movement and Friedman's Developmental Level (DL) Scoring System. The results suggest that the DL system does assess MA independently of CA. (Author/DEP)