Evidence map›Paper›PMID 23665180›Full record

ArticleJournal of experimental child psychology2013

The genetic and environmental etiologies of individual differences in early reading growth in Australia, the United States, and Scandinavia.

Micaela E Christopher, Jacqueline Hulslander, Brian Byrne, Stefan Samuelsson, Janice M Keenan, Bruce Pennington, John C Defries, Sally J Wadsworth, Erik Willcutt, Richard K Olson

Abstract readTwin Study
In one paragraph

Article in Journal of experimental child psychology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing 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

10 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Why do Children Differ in Their Development of Reading and Related Skills?Scientific studies of reading : the official journal of the Society for the Scientific Study of Reading · 2014
    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

10 authors.

Micaela E ChristopherDepartment of Psychology and Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA. micaela.christopher@colorado.edu
Jacqueline Hulslander
Brian Byrne
Stefan Samuelsson
Janice M Keenan
Bruce Pennington
John C Defries
Sally J Wadsworth
Erik Willcutt
Richard K Olson

Funding

VALIDITY OF SUBTYPES OF ADHDP50HD027802 · NICHD · UNIVERSITY OF COLORADO AT BOULDER · PI ERIK G WILLCUTT · 1990 to 2026
$44.9M
Longitudinal Twin Study of Early Reading Development (supplement)R01HD038526 · NICHD · UNIVERSITY OF COLORADO AT BOULDER · PI OLSON, RICHARD K · 2000 to 2010
$4.2M
Etiology and Neuropsychology of Math, Reading, ADHD, and their CovariationR01HD068728 · NICHD · UNIVERSITY OF COLORADO · PI PETRILL, STEPHEN A., WILLCUTT, ERIK G · 2011 to 2015
$3.0M
NICHD NIH HHS P50 HD027802NICHD NIH HHS R01 HD038526NICHD NIH HHS R01 HD068728
6 · The paper itself

Abstract

This first cross-country twin study of individual differences in reading growth from post-kindergarten to post-second grade analyzed data from 487 twin pairs from the United States, 267 twin pairs from Australia, and 280 twin pairs from Scandinavia. Data from two reading measures were fit to biometric latent growth models. Individual differences for the reading measures at post-kindergarten in the United States and Australia were due primarily to genetic influences and to both genetic and shared environmental influences in Scandinavia. In contrast, individual differences in growth generally had large genetic influences in all countries. These results suggest that genetic influences are largely responsible for individual differences in early reading development. In addition, the timing of the start of formal literacy instruction may affect the etiology of individual differences in early reading development but have only limited influence on the etiology of individual differences in growth.

Indexed as

Child DevelopmentReadingAustraliaChildChild, PreschoolFemaleHumansIndividualityMaleScandinavian and Nordic CountriesSocial EnvironmentTwins, DizygoticTwins, MonozygoticUnited States

Identifiers

PMID23665180
PMCPMC3661747

What OpenQuestion holds

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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.