Chapter 2-Models Of Abnormality Flashcards
Biological processes of maladaptive behavior
- In the body-neurotransmitters, hormones
(Genetic inheritance, evolution mutations, viral infections) - In psychological functioning-coping skills, temperament
- In the social environment-social support network, financial sources
Genetic abnormalities
Structure/number of chromosomes
-specific genes
Genetic penetrate
Rate at which you see a trait within a population of individuals that possess the GENE for that trait
(When phenotype matches genotype)
Behavioral genetics
Study of genes in groups of people as they relate to behavioral characteristics
- pedigree studies
- twin studies
Pedigree studies
Genealogical: must see conclusion across at least 2 generations
Twin studies
Identical: monozygotic, share 100% genes
Fraternal: dizygotic, share 50% genes
Concordance
Rate at which twins share a trait
Discordance
When both twins do not share the same trait
Nervous system map
Peripheral & Central
Peripheral–> somatic & autonomic
Autonomic–> sympathetic & parasympathetic
CNS
Brain & spinal cord
Peripheral NS
Connects CNS to glands, muscles, sensory systems
Autonomic NS
Smooth muscle functions (involuntary)
Somatic NS
Striated muscles (voluntary)
Parasympathetic NS
Restores homeostasis
Sympathetic NS
Arousal response, fight/flight
Role of NS in anxiety disorders
Increased & sustained activity in sympathetic NS
Role of neuron in disorders
- lack of NT at synapse
- excess of NT at synapse
- heightened sensitivity of receptors at synapse
Left hemisphere of brain
Verbal, speech, math, logic
Relatively more active with joy/happiness
Positive emotions
Right hemisphere of brain
Imagery, artistic skill, creativity
Relatively more active with sadness/anger
Negative emotions
Characteristic hemispheriality
Some people may have relatively more activity in one hemisphere during resting state
Hemispheriality & mood disorders
Right hemisphere people closer to threshold for negative mood stages than left
Psychoneuroimmunology
Interactions among nervous, endocrine, & immune system
Ex: stress–>cortisol–>decrease in immune system functioning–>illness
Biological model treatment
- Psychotropic meds
- Electroconvulsive therapy (ECT): caused seizure–>decreased depression
- Psycho/neural surgery only used as last resort
Psychic determinism
All behavior is caused by unconscious variables and events from earlier life