CHP 2 Theories and treatments of abnormality Flashcards
Define theory
set of ideas that provides framework for asking q’s about a phenomenon and gathering info about it
Define therapy
a treatment, based on theory, addresses factors theory claims cause phenomenon
Biopsychosocial approach
recognize that the dvp of psych symptoms is a combination of bio, psych, and sociocultural factors, aka risk factors
Diathesis-stress model of the development of disorders
creation of a dis requires both an existing diathesis to a disorder on and a trigger that is stress
There are 3 diathesis (factors)
bio, social, psych
There are three triggers (stresses)
bio, social, psych
___ risk factors increase the risk of multiple types of psychosocial problems
Transdiagnostic
Hindbrain regulates
basic life functions
Hindbrain has 4 parts
medula, pons, reticular formation, cerebellum
Medulla regulates
breathing and reflexes
Pons regulates
attentiveness and timing of sleep
Network of neurons, arousal and attention stimuli
reticular fomation
cerebellum regulates
coordination of movement
Midbrain has 2 parts
inferior and superior colliculus
substansia nigra
substansia nigra
part of pathway that regulates resps to rewards
inferior and superior colliculus
relay sensory info and control movement
forebrain has 4 parts
cerebral cortex
thamalus
hypothalamus
limbic system
cerebral cortex
advanced thinking processes, connected by corpus collusum
the cerebral cortex has __ and ___ hemospheres
left and right
each hemisphere of cerebral cortex has four lobes
frontal, parietal, occipital, temporal
thalamus
directs incoming info from senses to cerebrum
hypothalamus
small, below thalamus, regulates eating, drinking, sexual behaviour, processing basic emotions
limbic system
interconnected with hypothalamus, structures regulate many instinctive behaviours
limbic system has 2 parts
amygdala and hippocampus
amygdala
critical in emotion, fear
hippocampus
role in memory
what are the 5 biological approaches
biochemical imbalances genetic abnormalities drug therapies electroconvulsive therapy and other techniques psychosurgery
neurotransmitters
biochemicals, act as msgs carrying impulses between neurons and nerve cells
reuptake
initial neuron releasing nt reabsorbs nt
degradation
receiving neuron releases enzyme that breaks down nt into other biochemicals, can also be from releasing neuron
nts can malfunction and leave too __ or ___ in synapse
much or little
nts can malfunction at the ___
receptors
nts can malfunction due to nts __
system
more than __ nts identified
100
serotonin
travels thru many key areas of brain, malfunction of system that regulates it is a transdiagnostic factor, imp in emotional regulation, malfunction can lead to dep, anxiety and behavioral issues
dopamine
prominent nt associated with experience of reinforcement/reward, affected by rewarding subs, implications to muscle systems, plays role in dis involving control over muscles, transdiagnostic risk factor
norepinephrine
produced mainly by neurons in brain stem, cocaine and amphetamine prolog the action of nt by slowing its reuptake, dep by too little
GABA
inhibits actions of other nts, role in anxiety due to dysfunction of sys
endocrine
system of glands, produce chemicals called hormones directly released into blood
hormone
carries msgs throughout body, affects mood, energy, reaction to stress
pituitary
master gland, lies below hypothalamus, produces largest number of hormones
What is the pituitary response to stress
Releasing corticotropin-release factor by hypothalamus, to pituitary to release corticothrophic hormone, to organs causing body to adjust
Malfunctioning of the HPA axis causes what?
Trauma, OCD anxiety
Behavioural genetics
Study of genetics in personality & abnormality
Abnormalities more common in __ than in __ in genetics
Genes than chromosomes
Serotonin transporter gene
Short or long alleles, 2 short can increase risk of dvp dep
Polygenic process
Many genes combine to create a specific disorder
Interaction bt genes and environment
Genetic factors may influence environment chosen and reinforce genetic qualities. Act as catalyst for genetic tendencies
Epigenetics
Environmental conditions can affect expression of genes. DNA can be modified and inherited
Ex. Mouse pups