Natural Selection is the key creative force in evolution. Natural selection, together with specific histories of populations species and adaptations, is responsible for the design of organisms. Most people have some idea of what Natural Selection is.
Organismic trait designed to solve an ancestral problem s. Shows complexity, special "design", functionality Adaptation that has been "re-purposed" to solve a different adaptive problem. Williams suggested that an "adaptation is a special and onerous concept that should only be used where it is really necessary.
Obligate and facultative adaptations[ edit ] A question that may be asked about an adaptation is whether it is generally obligate relatively robust in the face of typical environmental variation or facultative sensitive to typical environmental variation.
By contrast, facultative adaptations are somewhat like "if-then" statements.
For example, adult attachment style seems particularly sensitive to early childhood experiences. As adults, the propensity to develop close, trusting bonds with others is dependent on whether early childhood caregivers could be trusted to provide reliable assistance and attention. The adaptation for skin to tan is conditional to exposure to sunlight; this is an example of another facultative adaptation.
When a psychological adaptation is facultative, evolutionary psychologists concern themselves with how developmental and environmental inputs influence the expression of the adaptation. Cultural universal Evolutionary psychologists hold that behaviors or traits that occur universally in all cultures are good candidates for evolutionary adaptations.
Basic gender differences, such as greater eagerness for sex among men and greater coyness among women,  are explained as sexually dimorphic psychological adaptations that reflect the different reproductive strategies of males and females.
Human evolution Evolutionary psychology argues that to properly understand the functions of the brain, one must understand the properties of the environment in which the brain evolved.
That environment is often referred to as the "environment of evolutionary adaptedness". More specifically, the environment of evolutionary adaptedness is defined as the set of historically recurring selection pressures that formed a given adaptation, as well as those aspects of the environment that were necessary for the proper development and functioning of the adaptation.
Humans, comprising the genus Homoappeared between 1. Because the Pleistocene ended a mere 12, years ago, most human adaptations either newly evolved during the Pleistocene, or were maintained by stabilizing selection during the Pleistocene.
Evolutionary psychology therefore proposes that the majority of human psychological mechanisms are adapted to reproductive problems frequently encountered in Pleistocene environments.
The environment of evolutionary adaptedness is significantly different from modern society. Because humans are mostly adapted to Pleistocene environments, psychological mechanisms sometimes exhibit "mismatches" to the modern environment. One example is the fact that although about 10, people are killed with guns in the US annually,  whereas spiders and snakes kill only a handful, people nonetheless learn to fear spiders and snakes about as easily as they do a pointed gun, and more easily than an unpointed gun, rabbits or flowers.
The term was coined by Niko Tinbergen to refer to non-human animal behavior, but psychologist Deirdre Barrett said that supernormal stimulation governs the behavior of humans as powerfully as that of other animals. She explained junk food as an exaggerated stimulus to cravings for salt, sugar, and fats,  and she says that television is an exaggeration of social cues of laughter, smiling faces and attention-grabbing action.
The human mind still responds to personalized, charismatic leadership primarily in the context of informal, egalitarian settings.
Hence the dissatisfaction and alienation that many employees experience. Salaries, bonuses and other privileges exploit instincts for relative status, which attract particularly males to senior executive positions. One of the major goals of adaptationist research is to identify which organismic traits are likely to be adaptations, and which are byproducts or random variations.
As noted earlier, adaptations are expected to show evidence of complexity, functionality, and species universality, while byproducts or random variation will not.
In addition, adaptations are expected to manifest as proximate mechanisms that interact with the environment in either a generally obligate or facultative fashion see above.
Evolutionary psychologists are also interested in identifying these proximate mechanisms sometimes termed "mental mechanisms" or "psychological adaptations" and what type of information they take as input, how they process that information, and their outputs.
Evolutionary psychologists use several strategies to develop and test hypotheses about whether a psychological trait is likely to be an evolved adaptation.Yes, you read the title correctly Contrary to what you may have been led to believe from reading about protein supplementation online or listening to the most jacked guy at your gym talk about muscle building, supplementation, and dieting, whey protein powder, which is composed of a collection of.
Also See WHY STEADY STATES ARE IMPOSSIBLE OVERSHOOT LOOP: Evolution Under The Maximum Power Principle The Tragedy of the Commons Science #13, December Vol. no. pp. DOI: /science The Darwin-Darwinism relation is in certain respects a causal relation, in the sense that Darwin influenced the debates that followed him.
But there is also something more: a kind of isomorphism between Darwin's Darwinism and historical Darwinism. An analysis of change as the darwinian condition for survival by | Mar 30, | Uncategorized | 0 comments Edward iridescent demoralizing rubí élfico rubricamente.
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Evolution is change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes that are passed on from parent to offspring during caninariojana.coment characteristics tend to exist within any given population as a result of mutations, genetic recombination and other sources of genetic variation.
American Philosophy. The term “American Philosophy,” perhaps surprisingly, has been somewhat vague. While it has tended to primarily include philosophical work done by Americans within the geographical confines of the United States, this has not been exclusively the case.