doesnt explain other characteristics-
body image dissatisfaction , axiety gaining weight and
treatment ineffective but improve mood and other syptoms
evo
adapted to flee famine hypothesis
would have been mentally
energised and encourage others
to find a food source as there
was little where they were
single minded
expect to affect males as much
reprductive supression hypothesis
avoid havng babies using up resorces of their
own and when they dont have resources - they
die , baby or foetus doesnt survive- dont pass
on genes- not good for survival
although avoiding making babies- is not
adaptive and so is not eating could die from it
put off pregnancy until time is right
why do men get it too- gender bias 25%
adults male anorexic
how is it passed on if they dont reproduce
and pass on genes or have died
amenorrhea a characteristic and onset of puberty delayed in anorexic girls
deterministic?
isnt falsifaible -no evidence- questionale as valid and scientific
if behaviour continued and evolved -this
exp could be true even tho not a survival
advantage in modern time- now have
contraception
ignores nature
genetic
hollend et al- concordant-56 MZ 5% DZ
treat same? most same
sex?external factor
DZ she same dna so supports
that lays a part but only 56% other
percentage nurtue factors?
psychological exp
psychodynamic
freud
adolecent - reducing onset f puberty
keeping child like body and mind
no responsibilities
explains why onset is at 14-16yrs
eating -big stomach-pregnancy
burch- ineffective parenting
control
perfectionist
cognitive
behavioural/leaning
attention-positive einforcement
research has shown most teens diet with
friends or group who encourage eachother