01:920:240 Lecture Notes - Lecture 19: Fairy, Etree, Speedstep

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Normal anxiety when danger or future threat. Anxiety disorders when have symptoms of anxiety for no good reason. Genes developed to adapt to ancient, not modern circumstances. (cid:862)i(cid:374) our (cid:373)oder(cid:374) skulls there is a sto(cid:374)e age (cid:373)i(cid:374)d. (cid:863) Humans designed to function in small groups of intimates. My will and reason were powerless against the imagination of a danger (cid:449)hi(cid:272)h had (cid:374)e(cid:448)er (cid:271)ee(cid:374) e(cid:454)perie(cid:374)(cid:272)ed. (cid:863) Many say learning wiki: (cid:862)people de(cid:448)elop spe(cid:272)ifi(cid:272) fears as a result of lear(cid:374)i(cid:374)g. (cid:863) True in some cases but not most. Many or most inherited through natural selection. Truly dangerous in pre-history, but no longer. Images of evolutionarily dangerous objects vs. currently dangerous objects. Combines fear of heights with enclosed spaces and no possibility of escape. Not one death in us airspace in 2007 or 2008. Auto accidents - > 40,000 deaths in each year. Great height, closed space, no way to escape. Fear of heights seems innate (visual cliff experiment) gibson and walk, 1958.

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