There is much interest in understanding how population demography impacts upon social evolution. Here, we consider the impact of rate and pattern of dispersal upon a classic social evolutionary trait--the sex ratio. We recover existing analytical results for individual dispersal, and we extend these to allow for budding dispersal. In particular, while a cancelling of relatedness and kin competi...

I provide a general critique of evidence-based policy and the untenable concept of a value-free social science which underpins it. This is illustrated using specific theoretical and policy applications in social science, with a focus on economics, which include: economic theories of social class and exploitation; causes of unemployment; drugs policy; sex education and health policy; choice and ...

This paper reports two studies where respondents were asked to help a friend make a decision about egg and sperm donation. In both studies they were presented with 16 hypothetical person’s which they were asked to rate for suitability. In the first study on egg donation the hypothetical donors differed on age (18 20 years vs. 30 33 years), social class (I/II vs. III/IV), Ethnicity (Caucasian vs...

conduct disorders are a group of behavior disorders in which the basic rights of others or major age appropriate social norms or rules are violated. to evaluate the factors influencing childhood conduct disorders, we reviewed records of 43 cases (84% boys, mean age 11 years) referred to shahid esmaili psychiatric hospital, tehran. all patients fulfilled diagnostic criteria of dsmiv. 15 variable...

BACKGROUND The association between socioeconomic circumstances and health in adulthood could come about through processes that may be divided into factors experienced early in life and those experienced in later adulthood. In order to disentangle the influences on health of the early genetic, prenatal and rearing environmental factors from environmental factor later in life, we compared the hea...

The extensive research done on the interrelationship between different social factors such as social class, gender and age and different linguistic variables has shown that these factors have important effects on the way language is used. Among these factors a special importance can be placed on age due to the role it plays in revealing different patterns of language use, such as the age-gradin...