3_prenatal_dev - The nature and nurture of development 1...

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1 The nature and nurture of development 1 DeFnitions of “innate” Your thoughts Congenital : present at birth Criteria for “predetermined ”: - Chronotypy : Fxed sequence of development - Heritability (a pop measure): behavior must vary with populations - Coupling of sender and receiver (when studying communication systems) 2 Examples from species recognition Nipple-seeking in rat pups: a strong role of experience 3
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2 Acoustic recognition in crickets Evidence of coupling, heritablility hybrid hybrid T. oceanicus T. commodus Shift in Flial preferences in rats 5 Day 15: shift in sensory control from thermal to olfactory Chronotypic but mediated by thermotactile stimulation 6 Suckling not necessary Milk unnecessary and non- additive Thermotactile stimulation sufFcient to induce preference and is equivalent to foster dam
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3 What is development? Habitat: “address” Niche: “occupation” - the functional relations between an organism’s capacities and the environment
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3_prenatal_dev - The nature and nurture of development 1...

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