alternative theoretical perspectives have been presented to explain internationally effective factors affecting immigration. for example, the orthodox explanation of migration is based on the concept of wage differentials as an important factor of international immigration. the world system approach declines to interpret theoretically international migration as a phenomenon between independent ...

Children may be viewed as public goods where both parents equally benefit genetically yet one parent often pays a greater cost and invests more heavily than the other. Investment decisions by marriage partners will be affected by their relative bargaining power, which is impacted by the feasibility of outside options and the supply and demand of unique sets of skills, abilities and traits that ...

This study examined children’s gender development and its associations with parents’ gender ideology and behavior among 172 parents (44 lesbian, 52 gay, 76 heterosexual) and their adopted children (Mage 8). Results revealed that parents’ sexual orientation was associated with children’s gender attitudes, but not with their sex-typing of self. Daughters of same-sex couples reported more flexible...

Building on three widely accepted premises (productivity gains from the division of labor, efficiency gains derived from the proximity of suppliers and users of certain inputs, the division of labor is limited by the extent of the market) this paper shows that a small, open economy may be caught in an underdevelopment trap in which a shallow division of labor (i.e., a low variety of specialized...

We consider why the gender division of labor is so often enforced by custom and why customary gender divisions of labor generally involve both direction and prohibition. In our formal model, agents first learn skills and then enter the marriage market. We show that wasteful behavior may emerge due to strategic incentives in specialization choice and human capital acquisition and that both probl...

We use digital evolution to study the division of labor among heterogeneous organisms under multiple levels of selection. Although division of labor is practiced by many social organisms, the labor roles are typically associated with different individual fitness effects. This fitness variation raises the question of why an individual organism would select a less desirable role. For this study, ...

Honey bees display a fascinating division of labor among foragers. While some bees solely collect pollen, others only collect nectar. It is assumed that individual differences in sensory response thresholds are at the basis of division of labor. Biogenic amines and their receptors are important candidates for regulating division of labor, because they can modulate sensory response thresholds. W...

The participation of women in agriculture and the role of women in society in the preindustrial period were remarkably different across ethnicities and strongly related to the type of agricultural technology adopted historically. The sexual division of labor was broadly associated to two technological regimes: shifting cultivation, where the majority of agricultural work was done by women, and ...

I use cross-cultural ethnographic data to explore the relationship between male and female subsistence labor among hunter-gatherer populations by examining data regarding resource procurement, time allocation, and task differentiation between the sexes relative to dependence on hunted foods. The findings indicate that female foragers generally perform a variety of nonsubsistence collection acti...