| Title |
What Explains the Heritability of Completed Fertility? Evidence from Two Large Twin Studies
|
|---|---|
| Published in |
Behavior Genetics, August 2016
|
| DOI | 10.1007/s10519-016-9805-3 |
| Pubmed ID | |
| Authors |
Daniel A. Briley, Felix C. Tropf, Melinda C. Mills |
| Abstract |
In modern societies, individual differences in completed fertility are linked with genotypic differences between individuals. Explaining the heritability of completed fertility has been inconclusive, with alternative explanations centering on family formation timing, pursuit of education, or other psychological traits. We use the twin subsample from the Midlife Development in the United States study and the TwinsUK study to examine these issues. In total, 2606 adult twin pairs reported on their completed fertility, age at first birth and marriage, level of education, Big Five personality traits, and cognitive ability. Quantitative genetic Cholesky models were used to partition the variance in completed fertility into genetic and environmental variance that is shared with other phenotypes and residual variance. Genetic influences on completed fertility are strongly related to family formation timing and less strongly, but significantly, with psychological traits. Multivariate models indicate that family formation, demographic, and psychological phenotypes leave no residual genetic variance in completed fertility in either dataset. Results are largely consistent across U.S. and U.K. sociocultural contexts. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 6 | 19% |
| United Kingdom | 1 | 3% |
| Spain | 1 | 3% |
| Bosnia and Herzegovina | 1 | 3% |
| Germany | 1 | 3% |
| Unknown | 21 | 68% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 25 | 81% |
| Science communicators (journalists, bloggers, editors) | 4 | 13% |
| Scientists | 1 | 3% |
| Practitioners (doctors, other healthcare professionals) | 1 | 3% |
Mendeley readers
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Croatia | 1 | 3% |
| Unknown | 36 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 8 | 22% |
| Student > Master | 5 | 14% |
| Student > Ph. D. Student | 4 | 11% |
| Other | 3 | 8% |
| Student > Bachelor | 3 | 8% |
| Other | 5 | 14% |
| Unknown | 9 | 24% |
| Readers by discipline | Count | As % |
|---|---|---|
| Psychology | 9 | 24% |
| Social Sciences | 8 | 22% |
| Agricultural and Biological Sciences | 2 | 5% |
| Economics, Econometrics and Finance | 2 | 5% |
| Nursing and Health Professions | 1 | 3% |
| Other | 4 | 11% |
| Unknown | 11 | 30% |
Attention Score in Context
This research output has an Altmetric Attention Score of 18. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 19 December 2023.
All research outputs
#2,104,050
of 25,769,258 outputs
Outputs from Behavior Genetics
#112
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#37,234
of 370,872 outputs
Outputs of similar age from Behavior Genetics
#3
of 17 outputs
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