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While a number of studies have examined gender preferences for children by studying behavioral measures, such as skewed sex ratios, sex imbalance in infant mortality, and sibling size/order; attitudinal measures have been analyzed less systematically. Using 50 Demographic and Health Surveys conducted between 2000 and 2008, this paper seeks to advance our understanding of gender preferences in developing countries by examining attitudinal measures cross-nationally. This study's findings show that, while balance preference is the most common type of preference in the vast majority of countries, countries/regions vary in the prevalence of son and daughter preferences. A preference for sons is not always found; and, indeed, a preference for daughters is shown to prevail in many societies.

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Effects of living without siblings and living with grandparents on overweight and obesity may change with child’s age. We aimed to examine these effects from early childhood to school age at the national level in Japan. Subjects were 43,046 children born in Japan during two weeks in 2001 who were followed annually from 2.5 to 13 years of age in the Longitudinal Survey of Newborns in the 21st Century. We used measured body height and weight reported by participants at each survey and followed the criteria of the International Obesity Task Force to define overweight and obesity. Random-effects logit models by sex, adjusted for time-varying and time-invariant covariates, assessed odds ratios of overweight and obesity for living without siblings and for living with grandparents at each age. The likelihood of overweight and obesity was significantly higher at 8 years and older among children living without siblings, compared with those living with siblings, and odds ratios were highest at 11 years of age in boys (1.87, 95% confidence interval [CI]: 1.49, 2.33) and at 10 and 13 years of age in girls (1.75 [95% CI: 1.36, 2.23] and 1.73 [95% CI: 1.30, 2.31], respectively). It was also significantly higher at 5.5 years and older among children living with grandparents, compared with those living without grandparents, and odds ratios were highest at 10 and 13 years of age in boys (1.53 [95% CI: 1.30, 1.80] and 1.54 [95% CI: 1.27, 1.86], respectively) and at 11 years of age in girls (1.51, 95% CI: 1.24, 1.84). In Japan, living without siblings and living with grandparents may increase the likelihood of overweight and obesity at 8 and 5.5 years and older, respectively. Child’s age should be considered during formulation of strategies for prevention of overweight and obesity in these groups.

BACKGROUNDUnlike other East Asian nations where preference for sons over daughters still prevails, gender preference for children in Japan has progressively shifted from son preference to a noticeable daughter preference over the past few decades. This emergence of daughter preference is surprising given that gender relations are more traditional in Japan than in other advanced countries. OBJECTIVEI focus on the extent to which individuals' gender preferences are shaped by their gender role attitudes and evaluate whether daughter preference is a reflection of convergence or a persistent divergence in gender roles in Japan. METHODSI use data from the Single Persons subset of the 11th Japanese National Fertility Survey conducted by the National Institute of Population and Social Security Research in 1997. Using multinomial logistic regression, I estimate the relationship between Japanese singles' gender role attitudes and their type of gender preference for children. FINDINGSFindings suggest that the effect of gender role attitudes on one's child gender preference differs for men and women. Overall, while daughter preference is associated with nontraditional gender role attitudes for men, daughter preference is associated with traditional attitudes for women. CONCLUSIONSTraditionalism is still driving gender preference, though in a different way for men and women. Emerging daughter preference may not simply be a reflection of improvements in women's status, but in fact it is likely that persistent divergence in gender roles remain in Japan.