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Sexual Intercourse

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Journal Article
Demography (2006) 43 (4): 747–769.
Published: 01 November 2006
... the association between age at first sexual intercourse and the 48-bp repeat polymorphism in the dopamine receptor D4 gene (DRD4). The twin analysis shows that MZ twins correlate their timing of first sex to a much greater extent than do the same-sex DZ twins. Our analysis of the polymorphisms in DRD4 indicates...
Journal Article
Demography (2007) 44 (4): 705–728.
Published: 01 November 2007
...Ester Lucia Rizzi; Gianpiero Dalla-Zuanna Abstract Individual data on menstrual cycles of noncontracepting women living in Western countries were used in order to verify whether the biological seasonality of conception persists after sexual behavior is controlled for. Episodes of intercourse were...
Journal Article
Demography (1989) 26 (4): 563–577.
Published: 01 November 1989
...-child pairs of white women in the Detroit metropolitan area, we tested this hypothesis, using both mother's and child's attitudes toward premarital sexual intercourse and the child's report of whether he or she had engaged in premarital sexual intercourse. Unlike most previous work in this area, which...
Journal Article
Demography (2017) 54 (3): 887–909.
Published: 02 May 2017
... pregnancy: more distinct partners during the study period, more sexual intercourse with men, less frequent contraceptive use, less use of a dual method (condom plus hormonal method), and more gaps in contraceptive coverage. Mostly heterosexual women resemble LGBTQ women in their contraceptive behavior...
Journal Article
Demography (2007) 44 (2): 373–388.
Published: 01 May 2007
...Jason M. Fletcher Abstract In this article, I use a national sample of high school students to test for several types of social influences on the decision to have sexual intercourse. I find evidence of endogenous social interactions (social multipliers), where the propensity of an individual...
Journal Article
Demography (2011) 48 (4): 1451–1472.
Published: 02 September 2011
... and couple heterogamy—and the type of contraceptive method used at last sexual intercourse within each relationship. Results indicate that for a given individual, contraceptive method choice varies across relationships as a function of these characteristics, even after we account for important individual...
Includes: Supplementary data
Journal Article
Demography (1990) 27 (4): 537–557.
Published: 01 November 1990
...R. Jean Haurin; Frank L. Mott Abstract Using approximately 2,000 sibling pairs from the ab] National Longitudinal Survey of Labor Market Experience of Youth, we examine the influence of an older sibling’s age at first sexual intercourse on the sexual initiation of a younger sibling. Hypotheses...
Journal Article
Demography (2019) 56 (3): 863–890.
Published: 06 May 2019
...Mónica L. Caudillo Abstract Research has documented a negative association between women’s educational attainment and early sexual intercourse, union formation, and pregnancy. However, the implications that school progression relative to age may have for the timing and order of such transitions...
Includes: Supplementary data
Journal Article
Demography (1967) 4 (1): 30–70.
Published: 01 March 1967
... population, proportion of nonfarm selfemployment, and overcrowded housing and show a negative significant relationship between fertility and communism. The study does not establish statistically significant relations, however, for population density, social mobility, substitutes for sexual intercourse...
Journal Article
Demography (2004) 41 (4): 697–720.
Published: 01 November 2004
... of the timing of first adolescent intercourse that emphasizes the impact of neighborhood structural disadvantage and collective efficacy on early sexual activity (at ages 11 to 16). In turn, we explored the extent to which neighborhood factors account for racial differences in the timing of first intercourse...
Journal Article
Demography (2009) 46 (4): 695–715.
Published: 01 November 2009
... Schools, 1988–1999 . Family Planning Perspectives , 32 , 204 – 12 . 10.2307/2648173 Dorius G.L. , Heaton T.B. , & Steffen P. ( 1993 ). Adolescent Life Events and Their Association With the Onset of Sexual Intercourse . Youth and Society , 25 ( 1 ), 3 – 23 . 10.1177...
Journal Article
Demography (1988) 25 (2): 189–204.
Published: 01 May 1988
... in a multivariate analysis. Table 1 shows the cumulative distributions of the proportion sexually active among the birth cohorts represented in all three surveys (metropolitan respondents born between 1959 and 1963). The estimates can be interpreted as the proportion having first premarital intercourse by their Xth...
Journal Article
Demography (1993) 30 (3): 297–313.
Published: 01 August 1993
...Mark J. VanLandingham; Somboon Suprasert; Werasit Sittitrai; Chayan Vaddhanaphuti; Nancy Grandjean Abstract We use data collected in 1991 to investigate sexual activity among never-married men in Thailand, with a focus on age at first intercourse, characteristics of sexual partners, and conditions...
Journal Article
Demography (2001) 38 (4): 467–479.
Published: 01 November 2001
... (com- plete termination of breast-feeding). The definition of re- sumption of intercourse also may be subjective; for instance, some respondents may regard infrequent sex (such as once a month) as observance of postpartum sexual abstinence. In both studies, resumption of abstinence was defined...
Journal Article
Demography (1989) 26 (1): 85–98.
Published: 01 February 1989
..., initially be sorted into two familiar categories: the social structural and cultural factors and the "intermediate variables" of exposure to sexual intercourse, conception, and birth through which broader social factors mustoperate (Davis and Blake, 1956). The first step in the development of a causal...
Journal Article
Demography (1986) 23 (4): 579–594.
Published: 01 November 1986
... of fertility and its antecedents. Davis and Blake (1956) originally identified a set of 11 variables that they described as intermediate between a society's culture and social structure, on the one hand, and its fertility, on the other. They included three union variables, three sexual intercourse variables...
Journal Article
Demography (1987) 24 (4): 623–637.
Published: 01 November 1987
... important. The fertility of cohabiting couples can be viewed as a function of their behavior on the intermediate variables (Bongaarts, 1978). These include sexual activity, contra- ceptive practice, sterility, and fetal deaths. Tanfer and Horn (1985) found that frequency of sexual intercourse was higher...
Journal Article
Demography (1987) 24 (3): 323–340.
Published: 01 August 1987
... of premarital sexual intercourse and older age at first intercourse (Hogan and Kitagawa, 1985; Mott, 1984; Zelnik, Kantner, and Ford, 1981). There is also some empirical evidence suggesting that frequency of dating by single mothers is related to the sexual experience of their children (Moore, Peterson...
Journal Article
Demography (2016) 53 (5): 1399–1428.
Published: 13 September 2016
... life courses . Research in Human Development , 1 , 161 – 187 . 10.1207/s15427617rhd0103_3 . McBride , C. K. , Paikoff , R. L. , & Holmbeck , G. N. ( 2003 ). Individual and familial influences on the onset of sexual intercourse among urban African American adolescents...
Journal Article
Demography (2015) 52 (3): 751–786.
Published: 12 May 2015
... risk of pregnancy (Miller 2011 ; Miller et al. 2010 , 2013 )—via both sex and contraception—by delaying or reducing the frequency of sexual intercourse among some women (i.e., the decision to delay serious relationships or to delay sexual intercourse within a relationship), and by increasing...