Assortative Interactions and Endogenous Stratification

Assortative mating and offspring well-being: theory and empirical findings from a native Amazonian society in Bolivia

Mate choice matters for inclusive fitness, household economic efficiency, assimilation, stratification, and economic inequalities in society. In positive assortative mating, people pair with someone who resembles them along a trait, whereas in negative assortative mating, people pair with someone who differs from them along a trait. In industrial nations, people tend to follow positive assortat...

A biological survey of a Cambridge suburb: assortative marriage for IQ and personality traits.

An account is given of a study, carried out in a Cambridge suburb, which measured the similarity in IQ and some personality traits between spouses. In both sexes mean IQ scores tended to diminish from social class I to V. Lower IQ scores were associated with higher levels of extraversion, neuroticism and inconsistency. Assortative marriage was found for IQ components, Total IQ, extraversion-int...

Endogenous and environmental factors interactions that contribute to the development of ascites in broiler chickens: a review

The increasing susceptibility of broiler chickens to ascites syndrome has coincided with a continuing genetic and nutritional improvement in their feed efficiency and growth rate. Ascites is multifactorial and interactions between environmental and endogenous factors play a particularly important role. The selection of fast growing broilers for high feed efficiency, which is characterized by hy...

No evidence for genetic assortative mating beyond that due to population stratification.

Network Structure and Category Consolidations in the Making of Attribute Segregations∗

This paper explores how network structure and category consolidation shapes the widely observed homogeneity among friends across a wide range of attributes in social networks. I use assortative mixing to refer to the patterns in network that individuals are more likely to connect with same-attribute alters. The specific network endogenous factor–assortative degree mixing I first propose that tw...