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Neoteny in humans is further indicated by the limbs and body posture, with the limbs proportionately short compared to torso length; [2] longer leg than arm length; [6] the structure of the foot; [1] and the upright stance. [7] [8] Humans also retain a plasticity of behavior that is generally found among animals only in the young. The emphasis ...
Neoteny in modern humans is more significant than in other primates. [6] In progenesis or paedogenesis, sexual development is accelerated. [7] Both neoteny and progenesis result in paedomorphism [8] (as having the form typical of children) or paedomorphosis [9] (changing towards forms typical of children), a type of heterochrony. [10]
Steven J. Gould discussed the presentation of neoteny with "terminal additions" in humans. [8] Neoteny is defined as the delayed or slowed development in humans when compared with their non-human primate counterparts. The "terminal additions" were extensions or reductions in the rate and scope of stages of development and growth.
Neotenic complex syndrome (NCS) is a syndrome that presents as an extreme form of developmental delay, with the defining characteristic being neoteny of the patient. It was named in 2017 by Dr. Richard F. Walker, who discovered several genes implicated in the syndrome.
Sexual selection is quite different in non-human animals than humans as they feel more of the evolutionary pressures to reproduce and can easily reject a mate. [2] The role of sexual selection in human evolution has not been firmly established although neoteny has been cited as being caused by human sexual selection. [ 3 ]
In this form of heterochrony, the developmental stage of childhood is itself extended, and certain developmental processes that normally take place only during childhood (such as accelerated brain growth in humans [25] [26] [27]), is also extended throughout this period. Neoteny has been implicated as a developmental cause for a number of ...
For policymakers, denying addicts the best scientifically proven treatment carries no political cost. But there’s a human cost to maintaining a status quo in which perpetual relapse is considered a natural part of a heroin addict’s journey to recovery. Relapse for a heroin addict is no mere setback. It can be deadly.
Some later scientific studies have provided further evidence for Lorenz's theory. For example, it has been shown that human adults react positively to infants who are stereotypically cute. Studies have also shown that responses to cuteness—and to facial attractiveness in general—seem to be similar across and within cultures. [6]