Birth order and sexual orientation in a national probability sample

2000 ◽  
Vol 37 (4) ◽  
pp. 361-368 ◽  
Author(s):  
Anthony F. Bogaert
LGBT Health ◽  
2019 ◽  
Vol 6 (6) ◽  
pp. 306-318 ◽  
Author(s):  
Madina Agénor ◽  
Ashley E. Pérez ◽  
Jonathan Wyatt Koma ◽  
Jasmine A. Abrams ◽  
Alecia J. McGregor ◽  
...  

2019 ◽  
Vol 56 (9) ◽  
pp. 1091-1100 ◽  
Author(s):  
Maria Carmela Basabas ◽  
Lara Greaves ◽  
Fiona Kate Barlow ◽  
Chris G. Sibley

2004 ◽  
Vol 36 (1) ◽  
pp. 19-37 ◽  
Author(s):  
ANTHONY F. BOGAERT ◽  
JOHN CAIRNEY

A birth order and sexual orientation relationship has been demonstrated numerous times in men, but a related variable, parental age (i.e. age of parents when the participant was born), has been less studied and has demonstrated contradictory results. In this research, the relations among birth order, parental age and sexual orientation were examined in a national probability sample of the US (Kessler, 1994; Kessler et al., 1994) and in a Canadian sample of homosexual and heterosexual men closely matched on demographic characteristics (Blanchard & Bogaert, 1996a). In both studies, an interaction between birth order and parental age was observed in men, such that there was positive association between number of older siblings and the likelihood of homosexuality, but this association weakened with increasing parental age. No significant effects were observed for women. The results are discussed in relation to recent theories of the birth order/sexual orientation relationship.


2015 ◽  
Vol 25 (1) ◽  
pp. 83-99
Author(s):  
Arzoo Rafiqi ◽  
Jens Peter Frølund Thomsen

Socialpsykologer forfægter den såkaldte kontakthypotese, hvis påstand er, at majoritetsmedlemmer bliver mere imødekommende over for etniske minoritetsmedlemmer, når de kommer i personlig kontakt med dem. Denne hypotese efterprøves på baggrund af den mest omfattende danske spørgeskemaundersøgelse nogensinde vedrørende dette emne (N = 1.928). I modsætning til tidligere internationale undersøgelser, hvori betydningen af venskaber mellem etniske grupper understreges, fremhæver denne artikel betydningen af kontakt mellem majoritetsmedlemmer og minoritetsmedlemmer i nabolaget og på arbejdspladsen. Disse to typer kontakt tilvejebringer en mere overbevisende test af kontakthypotesen, eftersom de rummer mindre selvselektion. Naboskab og kontakt på arbejdspladsen dækker samtidig langt flere sociale relationer end venskaber, som primært vedrører en snæver privatsfære. Artiklen bidrager til den socialpsykologiske litteratur om kontakteffekter med tre hovedkonklusioner. For det første rummer kontakt i nabolaget og på arbejdspladsen mere meningsfuld samtale, end fagfolk hidtil har antaget. For det andet øger begge former for kontakt den etniske tolerance. For det tredje er det samtale og meningsudvekslinger, som delvis forklarer, hvorfor kontakt gør majoritetsmedlemmer mere tolerante over for minoritetsmedlemmer. ENGELSK ABSTRACT: Arzoo Rafiqi and Jens Peter Frølund Thomsen: When the Ethnic Majority Meets Ethnic Minority Members This paper examines the so-called intergroup contact hypothesis by redirecting focus away from the friendship measure preferred by social psychologists. Although theoretically important, the friendship measure is infected by self-selection biases, and its social coverage is too limited, at least in a European context. Instead, this paper focuses on workplace contact and residential contact. It examines how these relate to ethnic tolerance, as reflected in support for various rights of ethnic minority members. These two types of intergroup contact provide a stronger test of the key hypothesis (contact has a positive influence on tolerance) as they do not meet all the ideal conditions. The analysis shows that although residential contact and workplace contact are more superficial (in terms of self-disclosure), they are both positively related to ethnic tolerance. In fact, both types of contact are as strongly related to ethnic tolerance as intimate cross-group friendship. We conclude that intergroup contact effects are robust as they are capable of occurring in unfavorable circumstances. The analyses are performed on the basis of a Danish national probability sample from 2009. Keywords: intergroup contact, ethnic tolerance, cross-group friendship, residential contact, workplace contact.


2021 ◽  
Author(s):  
Johannes K Vilsmeier ◽  
Michael Kossmeier ◽  
Martin Voracek ◽  
Ulrich S. Tran

For a quarter of a century researchers investigating the origins of sexual orientation have largely ascribed to the fraternal birth order effect (FBOE) as a fact, holding that older brothers increase the odds of homosexual orientation among men through an immunoreactivity process. Here, we triangulate the empirical foundations of the FBOE from three distinct, informative perspectives: First, drawing on basic probability calculus, we deduce mathematically that the body of statistical evidence of the FBOE rests on the false assumptions that effects of family size should be controlled for and that this could be achieved through the use of ratio variables. Second, using a data-simulation approach, we demonstrate that by using ratio variables, researchers are bound to falsely declare corroborating evidence of an excess of older brothers at a rate of up to 100%, and that valid approaches attempting to quantify a potential excess of older brothers among homosexual men must control for the confounding effects of the number of older siblings. And third, we re-examine the empirical evidence of the FBOE by using a novel specification-curve and multiverse approach to meta-analysis. This yielded highly inconsistent and moreover similarly-sized effects across 64 male and 17 female samples (N = 2,778,998), compatible with an excess as well as with a lack of older brothers in both groups, thus, suggesting that almost no variation in the number of older brothers in men is attributable to sexual orientation.


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