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Charles Crawford [5]Charles B. Crawford [4]
  1. Catherine Salmon, Charles Crawford, Laura Dane & Oonagh Zuberbier (2008). Ancestral Mechanisms in Modern Environments. Human Nature 19 (1):103-117.
    It is commonly assumed that the desire for a thin female physique and its pathological expression in eating disorders result from a social pressure for thinness. However, such widespread behavior may be better understood not merely as the result of arbitrary social pressure, but as an exaggerated expression of behavior that may have once been adaptive. The reproductive suppression hypothesis suggests that natural selection shaped a mechanism for adjusting female reproduction to socioecological conditions by altering the amount of body fat. (...)
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  2. Gregory D. Webster, Angela Bryan, Charles B. Crawford, Lisa McCarthy & Brandy H. Cohen (2008). Lineage, Sex, and Wealth as Moderators of Kin Investment. Human Nature 19 (2):189-210.
    Supporting Hamilton’s inclusive fitness theory, archival analyses of inheritance patterns in wills have revealed that people invest more of their estates in kin of closer genetic relatedness. Recent classroom experiments have shown that this genetic relatedness effect is stronger for relatives of direct lineage (children, grandchildren) than for relatives of collateral lineage (siblings, nieces, nephews). In the present research, multilevel modeling of more than 1,000 British Columbian wills revealed a positive effect of genetic relatedness on proportions of estates allocated to (...)
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  3. Charles Crawford (2002). Musings on the Concept of Exaptation and “Creationism”. Behavioral and Brain Sciences 25 (4):511-512.
    I claim that our desire to be special motivates us to suppose that if we were not God created, we must be self-created. I also claim that Stephen J Gould's claims about punctuated equilibrium, the absence of directional selection, and exaptations, when taken together, lead to kind of secular creationism. I introduce the notion of “adaptive effects” and argue that a focus on the actual physiological and psychological mechanisms that produce adaptations provides a way out of the exaptation dilemma.
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  4. Marc A. Johnston & Charles B. Crawford (1999). Stigmatizing Women's Aggressive Behavior: Who Does It Benefit and Why? Behavioral and Brain Sciences 22 (2):226-227.
    Why is female violence a taboo? We suggest that both men and women actively contribute to the creation of this stigma. Men may benefit because nonaggressive women may make better mothers and be more faithful and fertile. Females may benefit by downplaying their aggressive nature because they will be perceived as more valuable mates and because they will be more accepted within female social groups.
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  5. Judith L. Anderson & Charles B. Crawford (1993). Trivers-Willard Rules for Sex Allocation. Human Nature 4 (2):137-174.
    We present a quantitative model of sex allocation to investigate whether the simple “rules of thumb” suggested by Trivers and Willard (1973) would really maximize numbers of grandchildren in human populations. Using demographic data from the !Kung of southern Africa and the basic assumptions of the Trivers-Willard hypothesis, we calculate expected numbers of grandchildren based on age- and sex-specific reproductive value. Patterns of parental investment that would maximize numbers of expected grandchildren often differ from the Trivers-Willard rules. In particular, the (...)
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  6. Judith L. Anderson & Charles B. Crawford (1992). Modeling Costs and Benefits of Adolescent Weight Control as a Mechanism for Reproductive Suppression. Human Nature 3 (4):299-334.
    The “reproductive suppression hypothesis” states that the strong desire of adolescent girls in our culture to control their weight may reflect the operation of an adaptive mechanism by which ancestral women controlled the timing of their sexual maturation and hence first reproduction, in response to cues about the probable success of reproduction in the current situation. We develop a model based on this hypothesis and explore its behavior and evolutionary and psychological implications across a range of parameter values. We use (...)
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  7. Charles Crawford (1992). Sex Differences in Age Preferences for Mates: Primary and Secondary Predictions From Evolutionary Theory. Behavioral and Brain Sciences 15 (1):97-98.
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  8. Charles Crawford & Tracy Lindberg (1991). The Reemergence of Evolutionary Psychology? Behavioral and Brain Sciences 14 (2):305.
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  9. Charles Crawford (1989). Sex Differences in Life Histories: The Role of Sexual Selection and Mate Choice. Behavioral and Brain Sciences 12 (1):18.
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