A comparison of educational achievement in a national sample of Dutch female twins and their matched singleton controls

Celina C.C. Cohen, Stephanie H.M. Van Goozen, Jacob F. Orlebeke, Jan K. Buitelaar, Peggy T. Cohen-Kettenis

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The aim of this study was to compare the educational achievement of female twins (n = 577) and their matched singleton controls (n = 447), who were selected from participants of a national test of educational achievement in the years 1993 to 1998. To assure the representativeness of the selected groups we also compared the achievement scores of the twins and the controls to those of the total Dutch female population tested in the same period. We analyzed the results of the following educational achievement scales: Language, Mathematics and Information Processing. The results indicated that the singleton classmates performed significantly better than the twins on all three scales. However, the twins performed equally well as compared to the Dutch female population. We believe that our singleton control group was not as properly selected as we intended, a selection bias operative at the level of the schools may have confounded the comparison. We therefore conclude on the basis of a comparison with the performance of the total Dutch female population that there are no differences in educational achievement between female twins and singletons.

Original languageEnglish
Pages (from-to)273-276
Number of pages4
JournalTwin Research
Volume5
Issue number4
DOIs
Publication statusPublished - 1 Jan 2002

Cite this

Cohen, Celina C.C. ; Van Goozen, Stephanie H.M. ; Orlebeke, Jacob F. ; Buitelaar, Jan K. ; Cohen-Kettenis, Peggy T. / A comparison of educational achievement in a national sample of Dutch female twins and their matched singleton controls. In: Twin Research. 2002 ; Vol. 5, No. 4. pp. 273-276.
@article{2eb4eba473fb4f8eb53dcbe7d6a28ea4,
title = "A comparison of educational achievement in a national sample of Dutch female twins and their matched singleton controls",
abstract = "The aim of this study was to compare the educational achievement of female twins (n = 577) and their matched singleton controls (n = 447), who were selected from participants of a national test of educational achievement in the years 1993 to 1998. To assure the representativeness of the selected groups we also compared the achievement scores of the twins and the controls to those of the total Dutch female population tested in the same period. We analyzed the results of the following educational achievement scales: Language, Mathematics and Information Processing. The results indicated that the singleton classmates performed significantly better than the twins on all three scales. However, the twins performed equally well as compared to the Dutch female population. We believe that our singleton control group was not as properly selected as we intended, a selection bias operative at the level of the schools may have confounded the comparison. We therefore conclude on the basis of a comparison with the performance of the total Dutch female population that there are no differences in educational achievement between female twins and singletons.",
author = "Cohen, {Celina C.C.} and {Van Goozen}, {Stephanie H.M.} and Orlebeke, {Jacob F.} and Buitelaar, {Jan K.} and Cohen-Kettenis, {Peggy T.}",
year = "2002",
month = "1",
day = "1",
doi = "10.1375/twin.5.4.273",
language = "English",
volume = "5",
pages = "273--276",
journal = "Twin Research and Human Genetics",
issn = "1832-4274",
publisher = "Cambridge University Press",
number = "4",

}

A comparison of educational achievement in a national sample of Dutch female twins and their matched singleton controls. / Cohen, Celina C.C.; Van Goozen, Stephanie H.M.; Orlebeke, Jacob F.; Buitelaar, Jan K.; Cohen-Kettenis, Peggy T.

In: Twin Research, Vol. 5, No. 4, 01.01.2002, p. 273-276.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - A comparison of educational achievement in a national sample of Dutch female twins and their matched singleton controls

AU - Cohen, Celina C.C.

AU - Van Goozen, Stephanie H.M.

AU - Orlebeke, Jacob F.

AU - Buitelaar, Jan K.

AU - Cohen-Kettenis, Peggy T.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - The aim of this study was to compare the educational achievement of female twins (n = 577) and their matched singleton controls (n = 447), who were selected from participants of a national test of educational achievement in the years 1993 to 1998. To assure the representativeness of the selected groups we also compared the achievement scores of the twins and the controls to those of the total Dutch female population tested in the same period. We analyzed the results of the following educational achievement scales: Language, Mathematics and Information Processing. The results indicated that the singleton classmates performed significantly better than the twins on all three scales. However, the twins performed equally well as compared to the Dutch female population. We believe that our singleton control group was not as properly selected as we intended, a selection bias operative at the level of the schools may have confounded the comparison. We therefore conclude on the basis of a comparison with the performance of the total Dutch female population that there are no differences in educational achievement between female twins and singletons.

AB - The aim of this study was to compare the educational achievement of female twins (n = 577) and their matched singleton controls (n = 447), who were selected from participants of a national test of educational achievement in the years 1993 to 1998. To assure the representativeness of the selected groups we also compared the achievement scores of the twins and the controls to those of the total Dutch female population tested in the same period. We analyzed the results of the following educational achievement scales: Language, Mathematics and Information Processing. The results indicated that the singleton classmates performed significantly better than the twins on all three scales. However, the twins performed equally well as compared to the Dutch female population. We believe that our singleton control group was not as properly selected as we intended, a selection bias operative at the level of the schools may have confounded the comparison. We therefore conclude on the basis of a comparison with the performance of the total Dutch female population that there are no differences in educational achievement between female twins and singletons.

UR - http://www.scopus.com/inward/record.url?scp=0036687052&partnerID=8YFLogxK

U2 - 10.1375/twin.5.4.273

DO - 10.1375/twin.5.4.273

M3 - Article

VL - 5

SP - 273

EP - 276

JO - Twin Research and Human Genetics

JF - Twin Research and Human Genetics

SN - 1832-4274

IS - 4

ER -