Gender identity has been likened to a symphonic orchestration (Gershman 1970). It is composed of many motifs intertwined into one integrated theme. In other words, gender identity is a composite of several subcategories. These subcategories vary from author to author but not without considerable overlap. John Money (1973), who claims to be the first person to define gender identity in print, di...

We consider the evolutionary basis of intertemporal choice and time discounting, in particular, when there are intergenerational transfers. We show that the notion of “reproductive value” from biology provides the utility criterion for a parent to optimize the allocation of resources between transfers to offspring and for promoting her own survival to the next period. This optimization has a na...

1. Numerous studies have reported the effects of learning or experience on parasitoid host preference and location. However, the integration of pre-imaginal and adult experiences on the subsequent host preference and adult/offspring performance has been rarely tested in host–parasite interactions. 2. We present direct evidence that theses two kinds of experiences affect host preference and rela...

examined in this task: two were the same animals providing data shown in Figure 1B (cats 1 and 2), and the third (cat 4) was only tested in this task. The results for the three animals are shown in Figure 2B. With cat 1, the maximum step height remained higher than control values and usually higher than the rod height for all time durations we tested. With cat 2, the maximum step height was qui...

The author contends that sex differentials in childhood mortality in Pakistan are a likely outcome of son preference behavior by parents. Consideration is given to the historical improvement in the female disadvantage in mortality, the neglect of female children, gender and class factors, and son preference and high fertility. Data are from the 1981 Pakistan census and other official surveys....

Prenatal stress (PS) and early postnatal environment may alter maternal care. Infant rats learn to identify their mother through the association between maternal care and familiar odors. Female Wistar rats were exposed to restraint stress for 30 min, 4 sessions per day, in the last 7 days of pregnancy. At birth, pups were cross-fostered and assigned to the following groups: prenatal non-stresse...

In right-handed subjects, language processing relies predominantly on left hemisphere networks, more so in men than in women, and in right- versus left-handers. Using DT-MRI tractography, we have shown that right-handed men are massively interconnected between the left-hemisphere language areas, whereas the homologous in the right hemisphere are sparse; interhemispheric connections between the ...

Although son preference in patrilineal society is an established fact, daughter preference in matrilineal society is not thoroughly examined. Very few studies have been carried out on the issue. This paper attempts to explore the daughter preference and contraceptive-use in matrilineal tribal societies in Meghalaya, India. Data from the National Family Health Survey 1998-1999 have been used in ...