casey Flashcards
(22 cards)
whats delay gratifcation
refers to the ability to resist a small reward now in favour of a grester reward in the future
who conducted the marshemellow test
walter mischel
whats the aim of caseys study
to investiagte whether people who had difficulties delaying gratifaction at the age of four would still have difficulties delaying grat 40 years later
sample ?
27 low delayers and 32 high delayers
aged 44
all from marshmellow test 40 years ago
procedure?
go/no go task
ppts had to press a button when they saw a fearful face
hold back from pressing it when they saw happy face
how much time did a face appear for
500ms
with a 1 second gap inbetween
findings?
high delayers much better at resisiting pressing the go button when they saw happy faces then low delayers
aim of procedure 2?
if there is brain based explanations for the ability to delay graitfaction
sample?
27 agreed to take part
11 low delayers
15 high delayers
procedure
ppts repeated her go/no go task
they did it whilst inside a FMRI scanner
findings
low delayers saw the happy faces they had less activity than the high delayers in their inferior frontal gyrus
low delayers had more acitivity in their ventral straitum
nature or nurture?
nature- someones ability to resist temptation is due to their brain acitivity
determism or free will
determisntic- someones ability to resist temptation can be determined by theor activity in their brain
individual or situational
indivudal- investigated indivudal differences in delay of gratifaction which were stable over timr
why could this be socially senstive
may be upset by the idea their ability to resist temptation is out of their control
reductionist/ holistic?
study looked at both behavioural and biological explanation of delay of gratifaction
why does it link to the biological area
focuses on the areas of the brain that are active when resising temptation
how has it changed our understandings of regions of the brain
sperry only researched the role of the corpus callosum whereas casey gives us explanations of the inferior frontal gyrus and ventral striatum
how hasnt it changed our understandings of regions of the brain
supports idea of localisation of control
how has it changed our understadning of indivudal diversity
sperry used ppts who had abnormal brains while casey studied the brain of normal people
how has it changed our understsnding of social diversity
casey found small diffrences in brain functions even between normal people
how hasnt it changed our understanding of culteral diversity
sperry and casey studied the brain structure of USA only
neither of their studies included people from all different culteral backgrounds
