Vitamin D and the postmenopausal population

Vitamin D, a hormone critical to the body's maintenance of serum calcium and phosphorus concentrations, is currently the subject of much scientific interest. Low levels of vitamin D have been observed in many populations and epidemiological studies have suggested a link between this biochemical state and a range of diseases, such as cancer, diabetes and multiple sclerosis. While the consequence of vitamin D deficiency is well documented for bone (rickets and osteomalacia), with mixed findings relating to falls and fractures, a causal link between vitamin D deficiency and these wider health outcomes has not been established. If these relationships were found to be causal, the morbidity and mortality resulting from low levels of vitamin D could be substantial; the current evidence base, however, most robustly supports the assessment of serum 25(OH)-vitamin D in the context of specific symptoms, low bone mineral density or biochemical abnormalities, rather than as an entity to treat in its own right or as the basis for a population-wide screening programme.     

Coresidence With Elderly Parents: A Comparative Study of Southeast China and Taiwan

Using recent survey data from the Panel Study of Family Dynamics (PSFD) on 1,655 married persons born in 1964-1976 in southeastern China and Taiwan, we studied coresidence with elderly parents using a multinomial probit model for coresidence type and an ordered probit model for residential distance. The study yielded four findings: (a) Patrilocal coresidence was more prevalent in Taiwan than in China; (b) matrilocal coresidence was more prevalent in China; (c) practical factors mattered in both places; (d) in Taiwan only, a couple's economic resources facilitated breaking away from patrilocal coresidence. The findings suggest that, although economic development does not necessarily result in less traditional familial culture, personal economic resources may enable individual couples to deviate from tradition.     

Intergenerational transmission of sex-specific differential treatments: The allocation of education resources among siblings

Using a unique data set of 3-generation education information, in this article we extend the analysis of Greenhalgh [Greenhalgh, Susan, 1985. Sexual Stratification: The other side of ‘growth with equity’ in East Asia. Population and Development Review 11, 265–314] and study the question of intergenerational transmission of sex-specific differential treatments. The rich data are obtained from Taiwan’s Panel Study of Family Dynamics project. As far as the macro pattern is concerned, we found that although there is a clear tendency of differential treatment against females in the old generation, this tendency is significantly weakened and nearly vanishes in the young generation. Furthermore, the supporting effect of senior siblings in the old generation becomes a crowding (resource-dilution) effect in the young generation. However, within each micro lineage, there is a mild “habitus” effect in the sense that parents who experienced gender-specific differential treatment tend to treat their children in a similar fashion. We find that parents’ education contributes to the elimination of sex-based differential treatment, consistent with the finding in Thronton et al. [Thornton, Arland, Alwin, Duane F. and Camburn, Donald, 1983. Causes and consequences of sex-role attitudes and attitude change. American Sociological Review 48, 211–227].     

Till Porn Do Us Part? A Longitudinal Examination of Pornography Use and Divorce

As pornography use becomes more commonplace in the United States, and increasingly so among younger cohorts, a growing literature is considering its potential connection to key social and cultural institutions. The current study examined the relationship between pornography use and one such institution: marriage. We drew on three-wave longitudinal data from 2006 to 2014 General Social Survey panel studies to determine whether married Americans’ pornography use predicted their likelihood of divorce over time and under what social conditions. We employed a doubly robust strategy that combines entropy balancing with logistic regression models. We found that the probability of divorce roughly doubled for married Americans who began pornography use between survey waves (N = 2,120; odds ratio = 2.19), and that this relationship held for both women and men. Conversely, discontinuing pornography use between survey waves was associated with a lower probability of divorce, but only for women. Additional analyses also showed that the association between beginning pornography use and the probability of divorce was particularly strong among younger Americans, those who were less religious, and those who reported greater initial marital happiness. We conclude by discussing data limitations, considering potential intervening mechanisms and the possibility of reverse causation, and outlining implications for future research.     

Examining the macroergonomics and safety factors among teleworkers: development of a conceptual model

With the rising number of teleworkers who are working in non-traditional work locations, health and safety issues are even more critical. While telework offers attractive alternatives to traditional work locations, it is not without challenges for employers and workers. A macroergonomics approach or work system design for telework programs is proposed to address these new challenges. This approach explains the impact of organizational, psychosocial and workplace risk factors on teleworker's health and safety. A process for managing the health and safety of teleworkers is presented along with preventive strategies to provide an injury-free working environment.     

The Lived Experience of the Adolescent Sex Offender: A Phenomenological Case Study

Treatment for adolescents with sexually maladaptive behaviors is a continuing intervention that is changing and developing as greater understanding about this population of adolescents is obtained. The majority of treatment programs for adolescent sexually maladaptive behavior contain programming components that include cognitive distortions/thinking errors. Interviews including a conceptual mapping exercise were conducted with four adolescents adjudicated to a secure care program for sexual behaviors. All four boys completed an interview and a conceptual map of their perceived experiences as an adolescent with sexual maladaptive behaviors. All interviews were audio recorded. Analysis of the interviews and conceptual mappings yielded five themes present in the boys’ experience as well as a consideration of the role early trauma may have in the establishment of cognitive distortion development. Contributing environmental and familial factors also play an important part in sustaining cognitive distortion. Main themes include: loss of responsible father or father figure, inability to regulate emotion, lack of personal and parental boundaries, and early exposure to pornography. The contributing influence of responsible male father figures may play an even greater role in the lives of young males than originally thought. How the adolescent inaccurately perceives his environment—in essence what he tells himself and continues to tell himself to make sense of his world—are building blocks in the development and continuation of thinking errors/cognitive distortions used to commit and justify sexual offending behaviors.     

The Rise of Rational Choice Theory as a Scientific/Intellectual Movement in Sociology

How did Rational Choice Theory (RCT), traditionally rejected by sociologists for its economic individualism, rise rapidly in the 1980s and the 1990s to theoretical and institutional prominence within sociology? Drawing on Frickel and Gross’ (American Sociological Association, 70(2):204–232 2005) framework for the emergence of scientific/intellectual movements (SIMs), we argue that RCT rose to prominence in sociology in conjunction with: 1) high status actors’ criticism of the previously dominant paradigm, structural functionalism; 2) favorable structural conditions that provided entrepreneurial access to key resources; 3) proliferation through micromobilization contexts; and 4) the ability of those espousing RCT for sociology to draw on dominant cultural motifs outside of academia. The rise of RCT in American sociology provides a case study for how scientific/intellectual movements can find an audience in academic contexts that are predisposed to oppose them.     

Biodiversity decline and population externalities

To understand the problem of the global biodiversity decline, we set up a north–south model of population and income determination. Although biodiversity decline is mainly caused by primitive agricultural activities in some poor countries, we show that policies of resource management or Pigouvian taxes, targeted solely at rectifying such activities, are often ineffective. Since the production activities in these poor countries are correlated with parents’ fertility decisions, any efficient rectifications must involve a change in parents’ reproduction choice as well. Responsible editor: Junsen Zhang