Affordable Access

An analysis of Koch's (1966) Primary Mental Abilities Test data for 5- to 7-year-old twins.

Authors
Type
Published Article
Journal
Behavior genetics
Publication Date
Volume
10
Issue
4
Pages
409–412
Identifiers
PMID: 7194041
Source
Medline
License
Unknown

Abstract

The purpose of this note is to present twin correlations based on analyses of Koch's (1966) Primary Mental Abilities Test data on 83 pairs of 5- to 7-year-old twins. The results yielded significant heritability for the Spatial subtest and suggested genetic influence on the Verbal and Quantitative subtests as well. An analysis of the phenotypic correlation between the Verbal and Spatial subtests suggested that verbal and spatial abilities are genetically independent at this age and that the relationship between the two abilities is mediated primarily by within-family environmental factors.

Statistics

Seen <100 times