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Marks and Nesse investigated evolutionary causes of anxiety disorders and reported about embarrassment in particular: Social threats evoke responses that promote group acceptance, for example, submission to dominants and to norms of dress, mien, odor, speech, customs, beliefs. This prevents dangerous extrusion from the group. Mild shyness and ...


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Hutchinson, B. (2002), an article in the book Synergy Matters by Adrian M. Castell may help in understanding what is meant by bottom up thinking and the opposite, top down thinking. [T]he term ‘top down’ is used to describe an approach to problem solving where the problem space is defined first. The worldviews of the participants are ...


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First, it must be understood that not all traits in an animal are evolved or selected traits – some are only variations. Some of these variations may be selected by some evolutionary pressure in the future and then become evolved or selected traits. For example, each of the various hair colors (black, brown, blond, red, white, etc.) is not an evolved or ...


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Children have high pitched voices relative to adults because their vocal folds are shorter and physics demands that short vocal folds result in higher pitches. The format frequencies of children are also higher than adults due to shorter vocal tract lengths. I think your question is, is there a speech communication reason for the vocal folds and vocal ...


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