Chapter 2 Flashcards
An integrative approach to psychopathology (60 cards)
What is a Psychological Disorder?
below used to define:
- Statistical infrequency - rare behaviors, can be bad or good (genius)
- Violation of norms - some behaviors done here might be labeled as an issue in a different society/culture ex. gay
- Personal suffering - possibly difficult for someone to live with their condition, not always ex. narcissism - don’t feel suffering but put distress/suffering on others
- Disability or dysfunction - caused by disorders
- Unexpectedness - acting in an unexpected way ex. share sad news with someone and not empathetic but they start laughing = unexpected, issue with just this as people deal with stress and grief differently
DSM definition of a psychological disorder?
->combined all criteria to define it: DSM 5-TR - Psychological, or biological dysfunction that are unexpected in their cultural context and associated with personal distress
What is Psychopathology?
The scientific study of psychological disorders
What are the two different model you can use in psychopathology?
- One dimensional model
- Multidimensional model
->what behaviors you’re studying determines which model to use
Describe the one dimensional approach
->attributes causes of behavior to a single cause
→linear approach
Describe the multidimensional model
->attributes causes of behavior to several causes
→gives you a bigger picture
->Biological dimension
→Causal factors from the fields of genetics and neuroscience
→ Genetic predisposition; brain structure; neurochemistry, hormones
->Psychological aspects
→ Causal factors from behavioral and cognitive processes
→ Social learning; Learned helplessness
->Emotional Dimension
→Thoughts and feelings affect body’s biology
→ Emotions lead to development of many disorders
→ Can lead to anxiety
->Social Dimension
→ Society and culture influence behavior
→ Support or rejection from friends and family
→ Receiving social attention or not
->Developmental Dimension
→ Developmental critical periods
→ More or less reactive to given situations
→ When combined with other factors, may lead to psychological disorders
What are some genetic contributions to Psychopathology?
-> Abnormalities in sex chromosomal pairing leads to abnormalities
→ Wrong ordering of genes responsible too
->Genes exert influence on our bodies and behavior
→ A few genes are turned on, or expressed
→ Environmental factors determine turning on of genes
—>someone with schizophrenia has a kid that kid may not get it simply because of genetics
->stress/environment
What are genes?
->long molecules of DNA (deoxyribonucleic acid) at various locations on chromosomes within the cell nucleus
→ Every human being has a unique set of genes, except identical twins
→ Roles of nature (genes) and nurture (environment) is an ongoing debate in psychology
Describe chromosomes
-> Normal human cells have 23 pairs of chromosomes
→ Each parent contributes one chromosome to each chromosome pair
→ 22 pairs provide programs for development of brain and body
→ 23rd pair - sex chromosomes
Define Polygenic
behaviors influenced by many genes
Define genome
a complete set of genes
->Humans have 20000 to 25000 genes
->Technologies allow scientists to analyze thousands of genes at once (quantitative and molecular gentics)
What’s quantitative genetics?
estimates the effects of genes in explaining individual differences, allows us to understand how much variation in eye color etc is due to genetics, doesn’t allow you to find which gene causes these genetics
What’s molecular genetics?
focuses on examining the actual structure and functioning of genes and how they interact
How do genes and the environment interact?
- The Diathesis (inheritance)–Stress Model (environmental factor):
- The Gene‒Environment Correlation Model AKA Reciprocal Gene-Environment Model
- Epigenetics
Describe the Diathesis (inheritance)–Stress Model (environmental factor)
→ Certain traits or behaviors are inherited
→ Activated under conditions of stress
→ Interaction of the two can result in abnormalities
→ The greater the underlying vulnerability, the less stress is needed to trigger a disorder
→ The smaller the underlying vulnerability, the greater the life stress required to produce the disorder
->Criticisms:
—>Researchers unable to replicate any gene effects on depression
——>Researchers found stressful life events increase risk of depression
—>Biased publication of results
Describe the Gene‒Environment Correlation Model AKA Reciprocal Gene-Environment Model
->Genetic endowment may increase probability of responding negatively to stressful events
→ Vulnerability leads to a genetic tendency to create environmental risk factors
→our genes may contribute to how we create our environment (create environments that increase probability you’ll get the disorder
Define epigenetics
->The study of environmental influences on gene expression that occur without a DNA change
->Epigenetic marks from experiences (can be prenatal as well) - Once attached can control the on and off of genes in the infected area (could turn off ability to properly cope with stress so create environment where they could develop disorder easier)
→Environment contributes to genes turning “on” or “off”
→Some epigenetic changes may pass down to future generations
What included in the central nervous system?
your brain and spinal cord
→The brain processes information from sense organs; reacts as necessary
→ Neurons transmit information throughout the nervous system
What are the parts of a neuron?
◦ Soma (cell body)
◦ Dendrites (receivers of info from other neurons)
◦ Axon (’tails’ of neuron that spread out from cell body and transit info)
◦ Axon terminals
How do neurons communicate?
->neurotransmitter in vesicles fuse with presynaptic membrane and expelled and attach to receptors on postsynaptic membrane and open/close receptors, then neurot. removed from membrane by reuptake or inactivated
→SSRIS’S used in mood and anxiety disorders
What’s included in the peripheral nervous system?
somatic (controlling muscles) and autonomic system (regulates the
cardiovascular system (e.g., the heart and blood vessels) and the endocrine system’ other functions include aiding digestion, body temperature regulation)- sympathetic (fight or flight) and parasympathetic
What’s the endocrine system? Describe the pathway it takes
→produces hormones and works in conjunction with the ANS
→ Hypothalamus → pituitary gland → coordinates the endocrine system
->*Hypothalamic-Pituitary Adrenalcortical (HPA) axis implicated in several disorders
—>pathway to deal with stress
—>Cortisol is the stress hormone (helps body manage it) but don’t want it for long time
—>tells hypothalamus to stop releasing CRF
What are neurotransmitters?
->The chemical messengers of neurons
o Glutamate and GABA
o Catecholamines
* Dopamine, Epinephrine, Norepinephrine
◦ Tryptamines
* Serotonin
Describe Glutamate and GABA
Glutamate - excitatory neurot.
→ turns on many different neurons, leading to action
GABA - inhibitory neurot.
→ regulates transmission of information and action potentials
→ Inhibits a variety of behaviors and emotions