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● NATURE VS. NURTURE ANSWER



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● NATURE VS. NURTURE ANSWER
IS BOTH
o Twin Studies:
Identical twins – Monozygotic (MZ)
Fraternal twins – Dizygotic (DZ)
o Genetics: MZ twins will have a higher percentage of also developing a disease
o Environment: MZ twins raised indifferent environments show differences
ENDOCRINE SYSTEM sends hormones throughout the body
o Pituitary Gland Controlled by hypothalamus. release growth hormones
o Adrenal Glands related to sympathetic
NS: releases adrenaline
BRAIN IMAGING:
o EEG: brain activity – not specific
o XRAY: not useful, doesn’t show tissues
o CT / MRI shows structures
o PET: glucose shows brain activity (when in doubt pick this one)
o fMRI: glucose shows activity real time
o lesion – brain damage
Sensation & Perception – 8%)
ABSOLUTE THRESHOLD detection of signal 50% of time (is it there DIFFERENCE THRESHOLD (also

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