u4 aos2 dp10 Flashcards
biological risk factors to phobias
- GABA dysfunction (predisposing)
- stress response (precipitating)
-long term potentiation (perpetuating)
psychological risk factors to phobias
- behavioural models
- classical conditioning (precipitating)
- operant conditioning (perpetuating)
- cognitive models (perpetuating)
social risk factors to phobias
- specific environmental triggers (precipitating)
- stigma (perpetuating)
GABA dysfunction
body fails to produce, release or receive correct amount of GABA needed to regulate neurotransmitters in the brain
- cause postsynaptic neurons to fire more regularly, increasing anxiety
stress response
- caused by phobic stimulus
- activates fight- flight - freeze response
- physiological response
- heighten anxiety
- often triggered in absence of phobic stimulus
- often excessive
long term potentiation
- brain plasticity (physical changes)
- repeated stimulation strengthens synaptic connection
- important role in learning and memory of fear
behavioural models
- classical conditioning
innate, natural fear response becomes conditioned fear response
automatically and involuntarily produced
stimulus generalisation - operant conditioning
acquired through classical, maintained through operant
negative reinforcement contributes to avoidance behaviour - contributes to phobic response
a-b-c- avoidance behaviour
cognitive models
focuses how individuals process information about phobic stimulus and its context
cognitive bias
tendency to think in a way that involves errors of judgement and faulty decision making
- memory bias
- catastrophe thinking
memory bias
distorting influence of knowledge, beliefs and feelings on the recollection of previous memories (selective memory)
- consistency bias
- change bias
consistency bias
memories are distorted through reconstruction to fit what is presently known/ believed in ways that incorporate those fears
change bias
exaggerate what we knew/ felt then (during memory) to match what we know/ feel now
leads to phobia growing over time
catastrophe thinking
overestimating, exaggerating magnifying an object/ situation and predicting worst possible outcome
specific environmental triggers
direct, negative, traumatic experience with phobic stimulus and attribute it to the cause of phobia
- more severe trauma, more likely to develop phobia
- subsequent exposure after traumatic experience can decrease development of phobia
stigma
affect willingness to tell family/ friends
seek treatment