xxy syndrome Flashcards
what is xyy syndrome?
a genetic disorder that affects the 23rd pair of chromosomes
what does the y prompt?
the development of male gonads and hormones
what is the rate of the disorder?
1 in 1000 men
how many cases of undetected?
75%
what are the characteristics associated with the disorder?
may grow taller than siblings and faster lower IQ not bad tho more physically active easily distracted behavioural issues
is it inherited?
non randomly
what did jacob et al find?
there was an over representation of people with the disorder in the prison population, 15 for every 1000 prisoners
why is it impossible to know the true extent?
impractical to study, need resources time and staff
is it generalisable?
no, does not account for women
what is difficult to serperate?
nature/nurture
is witkins a strength or a weakness?
weakness
what did witkins find?
in 4591 men from denmark he found only 12 cases of xyy, also the difference between xyy and xy were not significant in terms of criminal behaviour
although witkins results not significant, what did he find linked to the theory but how did he explain it?
they were taller but said it was due to social reactions lead to prison population
is the theory reductionist?
yes only thinks about genetics
what did theilgarrd find and was he a strength or weakness?
strength, found xyy has slightly lower level of intelligence and were more aggressive , however more similarities
