Chapter 3: Causal Factors and viewpoints Flashcards
What is a risk factor?
-A correlate that occurs before some outcome of interest
-Example: depression is a risk factor for suicide
What is a variable risk factor?
-A risk factor that can change within a person
-ex: level of depression can vary within a person
What is a fixed marker?
-A risk factor that cannot change within a person
-Race cannot vary within a person, and white race is a marker of increased risk of suicide death
What is a causal risk factor?
-A variable risk factor that, when changed, changes the likelihood of the outcome of interest
-If changing X leads to a change in Y, X may be a causal risk factor for Y.
What is ethology?
-the study of causation or origination
-causal pattern of leading to the emergence of specific mental health problems
What is a necessary cause?
-characteristic that must exist for a disorder to occur
-ex: general paresis is a degenerative brain disorder that cannot develop unless the person has contracted syphilis.
-PSYCHOLOGY DOES NOT HAVE NECESSARY CAUSES
What is sufficient cause?
-Condition that guarantees the occurrence of a disorder. If X occurs then Y will also occur
According to a theory what is a sufficient cause for depression?
-hopelessness
-Others may be life stresses, unemployment and childbirth.
What is a contributory cause?
-Increases the probability of a disorder developing but is neither necessary nor sufficient for the disorder to occur
-If X occurs, then the probability of Y occurring increases.
-Most factors that have been shown to play a possible causal role in the development of mental health problems would be considered contributory causes
What can certain personality traits be a contributory cause for?
-depression
-parental or peer rejection
-victim of bullying
-economic hardship
How can negative life events affect a person’s mental health?
-It can contribute to the development of mental disorders
-But they may not be necessary or sufficient in themselves.
What are distal risk factors?
-Occur early in life but don’t show effects for many years
-ex: loss of a parent in early, or abusive and neglectful parents, may be distal contributory cause predisposing to depression, antisocial behaviors later in life.
What are proximal risk factors?
-Occur shortly before the occurrence of symptoms
-ex: crushing academic disappointment or severe relational difficulty, proximal factors for depression
-ex 2: biological changes such as damage to certain parts of the left hemisphere of the brain
What is a reinforcing contributory cause?
-Condition/factor that tends to maintain maladaptive behaviour that is already occuring
-ex: when a person is ill, more attention, sympathy and relief from unwanted responsibility which can unintentionally discourage recovery
-ex 2: depressed behavior alienated friend and family, so greater sense of rejection that reinforces depression.
Why is it often difficult to determine what is a cause and what is an effect in behavioural science?
-Many interacting causes
-Effects can serve as feedback that in turn influence the causes
What are diathesis-stress models?
describe mental disorders that develop when someone with a pre-existing vulnerability for the disorder experiences a major stressor.
What is a diathesis?
-vulnerability
-predisposition to develop a disorder from biological, psycho, or socio causal factors
What is a stress?
Response of individual to taxing demands
example of diathesis-stress model?
-poor performance on an important task is the stressor
-perfectionism is the diathesis
-stronger negative reaction when high perfectionism
What are protective factors?
-decreases the likelihood of negative outcomes among those at risk, buffer the negative impact of stress on individuals
-ex: supportive family
-When stressful experiences are health with successfully, they increase confidence and self-esteem
-Adolescents who score high on emotional intelligence are less likely to show negative outcomes following childhood abuse.
What is resilience ?
Ability to adapt to very difficult circumstances
What is the biopsychological viewpoint?
Biological, psychological, and social factors all interact and play a role in psychopathology and treatment.
What are four categories of biological factors that seem particularly relevant to the development of maladaptive behavior?
-genetic vulnerabilities
-brain dysfunction and neural plasticity
-neurotransmitter and hormonal abnormalities in brain and CNS
-Temperament
What is an example with twins that shows that genetic vulnerability can be part of the reason for developing a mental disorder?
-MZ twins share the same genetic blueprint but not DZ twins
-There a 50% concordance rate between MZ twins that have schizophrenia and only 16% in DZ twins.
-This shows that genetics have something to do with it but not only because otherwise it would be 100% concordance rate.
What are personality traits and mental disorders influenced by genetically wise?
-abnormalities in some of the genes on the chromosomes
-polymorphisms: naturally occurring variations of genes
Vulnerabilities to mental disorders are almost always polygenic. What does polygenic mean?
Caused by the action of many genes together in an additive or interactive fashion.
What are genotype-environment correlations?
Occurs when the genotype shapes the environmental experiences a child has
What are the three ways in which an individuals’ genotype may shape his or her environment?
-passive effect: results from genetic similarities to parents (ex: highly intelligent parents may create a stimulating environment for their child thus interacting in a positive way with child’s genetic endowment for high intelligence)
-Evocative effect: results when the genotype evokes a reaction from the environment (ex: smiley baby will draw more positive responses fro the environment)
-Active effect: results when the child plays more of an active role in shaping the environment (ex: an extraverted child will create a social circle by coming forward to other children)
What do behavior genetics focus on?
studying the heritability of mental disorders
What were the three primary methods that have traditionally been used in behavior genetics?
-Family history method: examine the incidence of a disorder in the relatives of the index case, to determine whether incidence increases in proportion of the degree of the hereditary relationship.
-Twin method: use of identical and non-identical twins (compare concordance rates)
-Adoption method:
According to the bidirectional view of psychobiological development, what influences the psychobiological development of an individual ?
-Environment (physical, social, cultural)
-Behavior
-Neural activity
-Genetic activity
-Individual development
How can the state of neurotransmitter systems influence the behavior?
-neurotransmitter imbalances can bring on abnormal behaviour
-Imbalances can be created by:
Excessive production and release of NT substance into the synapse
Dysfunctions in the ways nt are deactivated
Problems with the receptors in the postsynaptic neuron
What 5 nt have been extensively studied in relationship to psychopathology?
-Norepinephrine
-Dopamine
-Serotonin
-Glutamate
-Gamma aminobutyric acid (GABA)
What is the master endocrine gland?
Pituitary gland
What does the HPA do? (Hypothalamic-Pituitary-Adrenal axis
-Release of epinephrine and stress hormone cortisol which provides negative feedback to the hypothalamus and pituitary to finally reduce the release of adrenaline and cortisol
-Malfunctioning of this negative feedback system has been implicated in various forms of psychopathology, including depression and post traumatic stress disorder
What is temperament?
-Child’s reactivity and characteristic ways of self-regulation
-Early temperament is basis fro which personality develops
What are the five dimensions of temperament that can be identified?
-Fearfulness
-Irritability/ frustration
-Positive affect
-Activity level
-Attentional persistence/effortful control
What are the three important dimensions of adult personality that temperamental characteristics seem to be related to?
(1) neuroticism or negative emotionality
(2) extroversion or positive emotionality
(3) constraint (conscientiousness and agreeableness)
What did Sigmund Freud emphasise on with the psychodynamic perspective ?
The role of unconscious motives and thoughts in the determination of both normal and abnormal behavior.
What is the Id in Freud’s psychoanalytic theory?
-source of instinctual drives and is the first structure to appear in infancy
-life instincts: libido
-death instincts: destructive
-Operates on the pleasure principle (selfish and pleasure-oriented behaviour)
-Generates fantasies (primary process thinking)
What is the Ego in Freud’s psychoanalytic theory?
-Ego: Second part of the personality that develops after the first few months of life
-Meet Id’s demands in a way that ensures the well-being and survival of the individual
-Secondary process thinking
-Ego operates on the reality principle
What is the superego in Freud’s psychoanalytic theory?
-Third part of the personality that emerges from the ego
-Referred to as the conscience
-Interplay of id and ego, crucial to determining behaviour
-Unresolved conflict between the three lead to mental disorder (intrapsychic conflicts)
What are ego-defence mechanisms?
Irrational protective measures that reduce anxiety by helping a person push painful ideas out of consciousness rather than dealing directly with the problem.
Displacement?
Discharging feelings of hostility on objects less dangerous than those arousing the feelings. (Taking out your anger on someone else)