The purpose of the present study is to examine the role of Invitational Education and intelligence beliefs in the academic performance of high school students. The research population comprised all male and female students studying at high schools in the academic year of 2009-2010 in Kashmar, a city in Iran. Selected through multi-stage random…

Individual differences in general mental ability ("g") have important implications across multiple disciplines. Research suggests that the variance in "g" may be due to a general fitness factor. If this is the case, a relationship should exist between "g" and other reliable indicators of fitness. Some empirical results indicate a relationship…

Studies of group differences in intelligence often invite conclusions about groups in general from studies of group differences in selected populations. The same design is used in the study of group differences in other traits as well. Investigators observe samples from two groups (e.g. men and women) in some accessible population, but seek to…

The purpose of the present study is to provide some facts on the morbidity risk and incidence of enuresis in Icelandic children, aged 5-15 years, and to study its association with some mental and environmental variables often related to this symptom. (Author)

This investigation had two main aims: 1.) to study any differences in creativity between groups of children of high and low ability; 2.) to ascertain whether the relationship between selected measures of creativity was higher than the relationship between intelligence and each measure of creativity. (Author)

This paper described findings which accounted for the coexistence of positive and negative results in previous reports and showed how the findings can be explained by a theory of the origin of handedness. (Author/RK)

This paper describes the design of the interdisciplinary study of the growth and development of Dutch children in progress at the University of Nymegen, The Netherlands. Schaie's design is based on a trifactorial model which isolates the contributions to developmental data of the factors age, cohort and time of measurement. (Author/MS)

This article reviewed literature relating to growth stages in children and how these growth stages influence what is drawn. Additionally, a review of research was presented using the human-figure drawing in measurement of intelligence, personality assessment and prediction of learning performance. (Author/RK)

A computer scan of ACT Assessment records identified 3,427 sets of twins. The Hardy-Weinberg rule was used to estimate the proportion of monozygotic twins in the sample. Matrices of genetic and environmental influences were produced. The heaviest loadings were clearly in the genetic matrix. (SJL)

Normative data for the Wechsler Memory Scale-Revised were derived empirically using a sample of 50 volunteers between 25 and 34 years of age, who matched U.S. Census data on demographic characteristics. Differences between these empirical norms and published norms that were estimated statistically appear clinically significant. (SLD)

Using the Mayo Older Americans Normative Studies (MOANS) group (526 55-to 97-year-old adults), factor models were examined for the Wechsler Adult Intelligence Scale-Revised (WAIS-R); the Wechsler Memory Scale (WMS); and a core battery of the WAIS-R, the WMS, and the Rey Auditory-Verbal Learning Test. (SLD)

The present study was designed to (1) investigate the changes in the structure and organization of mental abilities during childhood and adolescence of 514 students as sampled by the Wechsler Intelligence Scale for Children (5 to 15 years) and the Wechsler Adult Intelligence Scale (16 to 18 Years) and (2) interpret, and possibly modify, the…

This study was designed to test the relationship of 4-H Club work to the interests of rural youth during their school years (grades 6-12) and to selected performances--attitudes toward and participation in adult education and occupational choices--five years after high school. It was also intended to examine the relationship between interests and…

As part of a continuing evaluation of the Swedish school system, changes in intelligence test scores from 1960 to 1995 were studied in relation to cohort, gender, and socioeconomic background. Changes in verbal, spatial, and reasoning ability were studied by comparing results on identical tests given to representative samples of Swedish…