| Title |
Sibling Sex Ratio and Sexual Orientation in Men and Women: New Tests in Two National Probability Samples
|
|---|---|
| Published in |
Archives of Sexual Behavior, February 2005
|
| DOI | 10.1007/s10508-005-1005-9 |
| Pubmed ID | |
| Authors |
Anthony F. Bogaert |
| Abstract |
One line of research on the etiology of sexual orientation has examined sibling sex ratio, the ratio of brothers to sisters collectively reported by a group of individuals, but this research has only used clinical and/or convenience samples. In the present study, homosexual men and women's sibling sex ratio was examined in two national probability samples. Results indicated that homosexual men had a sex ratio of 129.54 male live births to 100 female live births. This ratio was within the range of elevated sex ratios found in some previous studies of homosexual men, although it was only marginally significant (p = .09) relative to the known human sex ratio with regard to live births. Additional analyses indicated that this effect was likely the result of a high fraternal birth order (i.e., an elevated number of older brothers) in homosexual men. The sibling sex ratio for lesbians was 122.58 male live births to 100 female live births, which did not significantly differ from the known human sex ratio with regard to live births. The results for lesbians, however, should be interpreted with caution because the sample size (and resulting power) was low. The results in men add to research suggesting that homosexual men, unselected for gender identity or gender role behavior, do not have elevated sibling sex ratios. These results also suggest that research should concentrate on finding the cause(s) of the fraternal birth order effect, the consistent finding that homosexual men have an elevated number of older brothers. |
Mendeley readers
The data shown below were compiled from readership statistics for 34 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 2 | 6% |
| Poland | 1 | 3% |
| Unknown | 31 | 91% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Bachelor | 6 | 18% |
| Student > Ph. D. Student | 4 | 12% |
| Professor > Associate Professor | 4 | 12% |
| Student > Postgraduate | 3 | 9% |
| Student > Doctoral Student | 2 | 6% |
| Other | 8 | 24% |
| Unknown | 7 | 21% |
| Readers by discipline | Count | As % |
|---|---|---|
| Psychology | 15 | 44% |
| Medicine and Dentistry | 4 | 12% |
| Agricultural and Biological Sciences | 3 | 9% |
| Social Sciences | 3 | 9% |
| Economics, Econometrics and Finance | 1 | 3% |
| Other | 1 | 3% |
| Unknown | 7 | 21% |
Attention Score in Context
This research output has an Altmetric Attention Score of 14. 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 05 April 2021.
All research outputs
#2,278,247
of 22,786,087 outputs
Outputs from Archives of Sexual Behavior
#1,019
of 3,450 outputs
Outputs of similar age
#6,102
of 141,290 outputs
Outputs of similar age from Archives of Sexual Behavior
#2
of 7 outputs
Altmetric has tracked 22,786,087 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 90th percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 3,450 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 28.2. This one has gotten more attention than average, scoring higher than 70% of its peers.
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