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The Organizational-Activational Hypothesis states that steroid hormones permanently organize the nervous system during early development, which is reflected in adult male or female typical behaviors. [1] In adulthood, the same steroid hormones activate, modulate, and inhibit these behaviors. [2]
For example, testosterone is lower in fathers as compared to non-fathers, [32] and preliminary evidence suggests that men may be able to discern cues of fertility in women. [33] The support for the challenge hypothesis in non-human animals provides a foundation for which to explore the relationship between testosterone and aggression in humans.
The theory is based on a literature arising from research on prairie voles that pair bonding uses the same mechanisms that mother-infant bonding use as well as the available human evidence. The theory was used to critique a previously asserted evolutionary theory of romantic love proposed by Helen Fisher, [ 3 ] that romantic love is a form of ...
In social psychology, social buffering is a phenomenon where social connections can alleviate negative consequences of stressful events.. Although there are other models and theories to describe how social support can help reduce individuals' stress responses, social buffering hypothesis is one of the dominant ones.
The hypothesis separately proposes that hormonal changes across the cycle cause women, when they are most likely to get pregnant, to be more attracted to traits in potential short-term male sexual partners that indicate high genetic quality, leading to greater reproductive success. [3]
Likewise, an analysis of data from the National Child Development Study has been used in support of an alternate admixture hypothesis, which asserts that the apparent birth-order effect on intelligence is wholly an artifact of family size, [22] i.e. an instance of selection pressure acing against intelligence under modern conditions.
The hormonal theory of sexuality holds that, just as exposure to certain hormones plays a role in fetal sex differentiation, such exposure also influences the sexual orientation that emerges later in the adult. Differences in brain structure that come about from chemical messengers and genes interacting on developing brain cells are believed to ...
The term standard social science model (SSSM) was first introduced by John Tooby and Leda Cosmides in the 1992 edited volume The Adapted Mind. [1] They used SSSM as a reference to social science philosophies related to the blank slate, relativism, social constructionism, and cultural determinism.