Publication Date
| In 2026 | 0 |
| Since 2025 | 0 |
| Since 2022 (last 5 years) | 0 |
| Since 2017 (last 10 years) | 0 |
| Since 2007 (last 20 years) | 2 |
Descriptor
Source
| Intelligence | 6 |
Author
| Cardon, Lon R. | 2 |
| Ando, Juko | 1 |
| Bratko, Denis | 1 |
| Butkovic, Ana | 1 |
| Chamorro-Premuzic, Tomas | 1 |
| Harlaar, N. | 1 |
| Hiraishi, Kai | 1 |
| Kovas, Y. | 1 |
| LaBuda, Michele C. | 1 |
| Okada, Mitsuhiro | 1 |
| Ozaki, Koken | 1 |
| More ▼ | |
Publication Type
| Journal Articles | 6 |
| Reports - Research | 6 |
Education Level
| Elementary Education | 1 |
Audience
Location
| Croatia | 1 |
| Japan | 1 |
| United Kingdom | 1 |
Laws, Policies, & Programs
Assessments and Surveys
| Wechsler Intelligence Scale… | 1 |
What Works Clearinghouse Rating
Direct linkBratko, Denis; Butkovic, Ana; Vukasovic, Tena; Chamorro-Premuzic, Tomas; von Stumm, Sophie – Intelligence, 2012
Self-perceived abilities (SPA), which play an important role in academic achievement, have been recently reported to be fully attributable to genetic and non-shared environmental influences. To replicate and extend this finding, 732 Croatian twins (15-22 years old) were assessed on cognitive ability, self-assessed intelligence (SAI), and Five…
Descriptors: Cognitive Ability, Intelligence, Personality Traits, Self Concept
Shikishima, Chizuru; Hiraishi, Kai; Yamagata, Shinji; Sugimoto, Yutaro; Takemura, Ryo; Ozaki, Koken; Okada, Mitsuhiro; Toda, Tatsushi; Ando, Juko – Intelligence, 2009
Using a behavioral genetic approach, we examined the validity of the hypothesis concerning the singularity of human general intelligence, the "g" theory, by analyzing data from two tests: the first consisted of 100 syllogism problems and the second a full-scale intelligence test. The participants were 448 Japanese young adult twins (167…
Descriptors: Intelligence, Twins, Asians, Young Adults
Kovas, Y.; Harlaar, N.; Petrill, S. A.; Plomin, R. – Intelligence, 2005
Mathematics performance at 7 years as assessed by teachers using UK national curriculum criteria has been found to be highly heritable. For almost 3000 pairs of 7-year-old same-sex twins, we used multivariate genetic analysis to investigate the extent to which these genetic effects on mathematics performance overlap with genetic effects on reading…
Descriptors: National Curriculum, Genetics, Twins, Mathematics Teachers
Peer reviewedLaBuda, Michele C.; And Others – Intelligence, 1987
Genetic and environmental correlations among 11 Wechsler Intelligence Scale for Children-Revised (WISC-R) subtests were estimated from a sample of 143 twin pairs using the methodology of multivariate behavioral genetics. Correlations due to within-pair environmental influences were generally small, whereas those due to shared environmental…
Descriptors: Correlation, Elementary Secondary Education, Genetics, Individual Differences
Peer reviewedCardon, Lon R.; And Others – Intelligence, 1992
A multivariate hierarchical model of specific cognitive abilities was fitted to data from 196 adopted and 213 nonadopted children from the Colorado Adoption Project and 120 of their siblings to assess genetic influence on specific mental abilities. Genetic effects occur in middle childhood that differentially influence mental ability scores.…
Descriptors: Adopted Children, Cognitive Ability, Elementary Education, Elementary School Students
Peer reviewedCardon, Lon R.; And Others – Intelligence, 1990
Genetic and environmental etiologies of individual differences in tests of intelligence and school achievement were investigated in a study from the Colorado Adoption Project. A multivariate conditional path model was fitted to general cognitive ability and reading performance data from 119 adoptive and 120 nonadoptive families. (SLD)
Descriptors: Academic Achievement, Achievement Tests, Adopted Children, Cognitive Ability
