Evidence map›Paper›PMID 7598663›Full record

ArticleBehavior genetics1995

The genetic and environmental variance underlying elementary cognitive tasks.

S A Petrill, L A Thompson, D K Detterman

Abstract readTwin Study
PubMed Publisher
In one paragraph

Article in Behavior genetics, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

S A PetrillDepartment of Psychology, Case Western Reserve University, Cleveland, Ohio 44106-7123, USA.
L A Thompson
D K Detterman

Funding

MENTAL RETARDATION RESEARCH TRAINING IN PSYCOLOGYT32HD007176 · NICHD · CASE WESTERN RESERVE UNIVERSITY · PI DETTERMAN, DOUGLAS K · 1985 to 2004
$787k
MENTAL RETARDATION, COGNITION, AND ACHIEVEMENT IN TWINSR01HD021947 · NICHD · CASE WESTERN RESERVE UNIVERSITY · PI DETTERMAN, DOUGLAS K · 1987 to 1990
–
NICHD NIH HHS HD07176NICHD NIH HHS HD21947
6 · The paper itself

Abstract

Although previous studies have examined the genetic and environmental influences upon general intelligence and specific cognitive abilities in school-age children, few studies have examined elementary cognitive tasks in this population. The current study included 149 MZ and 138 same-sex DZ twin pairs who participated in the Western Reserve Twin Project. Thirty measures from the Cognitive Abilities Test (CAT; Detterman, 1986) were studied. Results indicate that (1) these measures are reliable indicators of general intelligence in children and (2) the structure of genetic and environmental influences varies across measures. These results not only indicate that elementary cognitive tasks display heterogeneous genetic and environmental effects, but also may demonstrate that individual differences in biologically based processes are not necessarily due to genetic variance.

Indexed as

CognitionSocial EnvironmentAdolescentAptitudeChildFemaleHumansIntelligenceIntelligence TestsMaleNeuropsychological TestsReaction TimeTwins, DizygoticTwins, Monozygotic

Identifiers

PMID7598663

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.