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level: Pre Adult brain development

Questions and Answers List

level questions: Pre Adult brain development

QuestionAnswer
Key research Barkley and Galvin methodquasi experiment using an independent measures design in a lab enviornment iv- adult or adolescentt dv-the no of gambles they did in the spinner game
Key research Barkley and Galvin sample19 healthy right handed adults . group 1 22 right handed adolescent - group 2 volunteer sampling
Procedure for Key research Barkley and Galvinvisited the lab on two occasions for an intake session and FMRI scan sesssion 1 - asked question about their income , to control the their perceptions of the risks associated with gambling, gave 20 dollars to be used in the next session session 2 - came back a week later, FMRI scan whilst gambling , shown a spinner of what they could win and given a choice if they wanted to gamble , gamble played at the end to see if they could add to their money or loose it
Summary of results Key research Barkley and GalvinNo significant differences were found between adults and adolescent in the trials where no risks was involved in both groups on the FMRI increase activity in medial prefrontal cortex , decrease in amygdala Adolescents had more activity in the left ventral striatium which increased as the expected increases
What is the ventral striatium associated withhigh reward and pleasure
Evaluation Key research Barkley and GalvinW-Validity - pop v - small sample - deterministic - takes away accountability suggesting gambling in adolescents is down to the way their brain develops S- useful - educate on how their predispositioned to gamble and suggest safe measure and preventions n -psych as a science - objective measures , reliable
What happens in the early brain developmentthe brain develops back to front such as regions assoiciated with visual infomation high frequency of synaptogenesis during the first few years so more synaptic connections than an adult , synaptic pruning begins to occur BACK TO FRONT SYNAPOTGENESIS SYNAPTIC PRUNING
What is synaptic pruningpromotes organisation in the brain by destroying the weakest synapses
what is synaptogenesisnew synapses formed between neurones causing networks to form
Adolescent brain developingSynaptic pruning occurs , neurones that survive this become myelinated the prefrontal cortex is last to mature that is involed in risk taking bhv as it prevents impulses
Why is adolescent brain devlopement can lead to risk taking bhvpre frontal cortex develops last which means impluses to do things are more likely to occur as it impulse prevention is not matured yet summarily with the ventral stiatium which is associated with rewards that adolescents tend to have a higher activity in
Application of risk taking bhvspositive reinforcement to increase positive behaviour by rewarding non risk taking bhv also through slt learning through consequences from media campaigns
What is the graduated driving license schemecurfew between 10pm and 5 in the morning and no passengers under 30 to decrease risk taking bhv in the united states by reducing the opportunities such as speeding or drink driving reducing negative outcomes