, ▁California . ▁ ▁References ▁▁ ▁Category : F arm ers ▁from ▁California ▁Category : Pe ople ▁from ▁O ro ville , ▁California ▁Category : 1 8 3 9 ▁birth s ▁Category : 1 9 3 2 ▁death s ▁Category : American ▁women ▁far mers <0x0A> </s> ▁Fol k ▁bi ology ▁or ▁folk bi ology ▁is ▁the ▁cogn itive ▁study ▁of ▁how ▁people ▁class ify ▁and ▁reason ▁about ▁the ▁organ ic ▁world . ▁Hum ans ▁everywhere ▁class ify ▁animals ▁and ▁plants ▁into ▁obvious ▁species - like ▁groups . ▁The ▁relationship ▁between ▁a ▁folk ▁tax onomy ▁and ▁a ▁scientific ▁classification ▁can ▁assist ▁in ▁understanding ▁how ▁evolution ary ▁theory ▁de als ▁with ▁the ▁apparent ▁const ancy ▁of ▁" common ▁species " ▁and ▁the ▁organ ic ▁processes ▁cent ering ▁on ▁them . ▁From ▁the ▁v antage ▁of ▁evolution ary ▁psych ology , ▁such ▁natural ▁systems ▁are ▁arg u ably ▁routine ▁" hab its ▁of ▁mind ", ▁a ▁sort ▁of ▁he ur istic ▁used ▁to ▁make ▁sense ▁of ▁the ▁natural ▁world . ▁ ▁References ▁ ▁External ▁links ▁▁ ▁Scott ▁A tr an ▁( 1 9 9 9 ) ▁Fol k bi ology ▁( PDF ), ▁in ▁Robert ▁Wilson ▁and ▁Frank ▁Ke il , ▁Ed . ▁The ▁M IT ▁Encyclopedia ▁of ▁the ▁C ogn itive ▁Sciences , ▁pages ▁ 3 1 6 - 3 1 7 . ▁M IT ▁Press . ▁ ▁Category : B ranch es ▁of ▁bi ology ▁Category : E th n obi ology ▁Category : E volution ary ▁psych ology <0x0A> </s> ▁John ▁Wood