Genetic Epidemiology Unit, Queensland Institute of Medical Research, 300 Herston Rd, Brisbane, QLD 4029, Australia.
Behav Genet. 2010 Jan;40(1):12-21. doi: 10.1007/s10519-009-9300-1. Epub 2009 Oct 8.
Risky sexual behaviour is a major health issue in society, and it is therefore important to understand factors that may predispose individuals to such behaviour. Research suggests a link between risky sexual behaviour and personality, but the basis of this link remains unknown. Hans Eysenck proposed that personality is related to sexual behaviour via biological underpinnings of both. Here we test the viability of this perspective by analysing data from identical and non-identical twins (N = 4,904) who completed a questionnaire assessing sexual attitudes and behaviour as well as personality. Using genetic modelling of the twin data, we found that risky sexual behaviour was significantly positively correlated with Impulsivity (r = .27), Extraversion (r = .24), Psychoticism (r = .20), and Neuroticism (r = .09), and that in each case the correlation was due primarily to overlapping genetic influences. These findings suggest that the genetic influences that shape our personality may also predispose us to risky sexual behaviour.
性行为风险是社会中的一个主要健康问题，因此了解可能导致个人采取这种行为的因素很重要。研究表明，性行为风险与个性之间存在关联，但这种关联的基础尚不清楚。汉斯·艾森克提出，个性通过两者的生物学基础与性行为相关。在这里，我们通过分析完成了评估性态度和行为以及个性的问卷的同卵和非同卵双胞胎（N = 4904）的数据来检验这一观点的可行性。使用双胞胎数据的遗传建模，我们发现性行为风险与冲动性（r =.27）、外向性（r =.24）、精神病态（r =.20）和神经质（r =.09）呈显著正相关，并且在每种情况下，相关性主要是由于重叠的遗传影响。这些发现表明，塑造我们个性的遗传影响也可能使我们更容易发生性行为风险。
