Chap 2: Perspectives on Development and Psychopathology Flashcards
Etiology def
The study of the causes of childhood disorders (for our purposes)
-> Many psychological disorders are multiply caused
-> Multiple, interactive causes help in understanding the complexity of disorders
Premise of Developmental psychopathology: …
Abnormal development is MULTIPLY determined
- Must look BEYOND current symptoms
- Consider developmental pathways and interacting events
Children and environments are …; which is a … view
INTERDEPENDENT; TRANSACTIONAL view (transactions = interdependent)
-> Both children and the environment as active contributors to adaptive/maladaptive behavior
Abnormal developmental involves … and …
continuities; discontinuities
Development as Continuous
Changes are gradual and quantitative/predictable.
Development as Discontinuous
QUALITATIVE differences between infancy/childhood/adulthood. Not gradual.
Sensitive periods
Times in development when environmental influences on development are rly enhanced
-> Stressor/Resilience (…) has a disproportionally strong influence at one point (e.g. periods in gestation)
-> e.g. of the boy in the woods
Development is a process of increasing … and …
differentiation; integration
-> synaptic pruning
-> The foundation we lay early in our life, help us to build upon that
-> Current abilities or limitations are influenced by prior accomplishments
Abnormal child behavior is best studied from a … perspective
MULTI-theoretical
-> No single theoretical orientation explains various behaviors or disorders
Neurobiological perspective of Psychopathology
Neurobiological perspective:
Brain = underlying cause of psychological disorders
Diff in structure of dev of brain = explains diff in psychopathology
Neurobiological perspective: Neural plasticity
The brain’s anatomical differentiation is use-dependent
-> The neurons you used a lot are the one that are gonna be specialized (synaptic pruning)
-> Nature and nurture both contribute
-> Experience plays a critical role in brain development
Maturation of the brain:
- Areas governing basic SENSORY and MOTOR skills mature during the …
- PERCEPTUAL and INSTINCTIVE centers are strongly affected by …
- Prefrontal cortex and cerebellum are not rewired until …
- Major restructuring/rewiring occurs from … to … due to pubertal development and again in adolescence
- first 3 years of life
- early childhood experiences
- 5 to 7 years old
- ages 9 to 11
(e.g. here, trauma/stressor can have a huge impact on pruning, strengthening of neural connection)
Gene-environment Interactions (GxE)
DIATHESIS-STRESS MODEL TYPE OF SHIT
(Most forms of abnormal behavior are polygenic)
Gene-environment Correlations
Ways that a person’s genes and their environment are systematically INTERRELATED - BIDIRECTIONAL.
Three types of gene-environment correlations
- Passive: Simple association between genes you have and environment you’re in.
- Evocative: Who you are (bc of your genes) elicit reactions from the environment.
- Active: Me, as a function of my genes, genes are pushing me to seek out certain experiences in my environment
EVOLUTION of gene-environment correlations (type) and their INFLUENCE over time (3)
- Influence of ACTIVE gene-environment correlation INCREASES across time (along w maturity, ++ control on your environment)
- Influence of PASSIVE gene-environment correlation DECREASES across time
- Influence of EVOCATIVE gene-environment correlation CONSTANT across time (our traits that influence our behavior will always elicit reactions from people; interdependence bt pple and you)
*10yo, les lignes se croisent
Neurotransmitters
- Substance that is released at the end of a nerve fibre
- Neurotransmitters make biochemical connections
- Neurons more sensitive to a particular neurotransmitter cluster together and form brain circuits
Big 4 neurotransmitters in psychopathology
Serotonin
GABA,
Norepinephrine/Adrenaline
Dopamine
-> Psychoactive drugs are used in treatments
GABA: Normal functions (2)
(1) Reduces arousal and moderates/influences EMOTIONAL RESPONSES, such as anger, hostility, and aggression.
(2) Is linked to feelings of anxiety and discomfort.
Dopamine: Normal functions (2)
(1) May act as a switch that turns on various brain circuits, allowing other neurotransmitters to INHIBIT or FACILITATE emotions or behavior.
(2) Is involved in exploratory, extroverted, and pleasure.
Norepinephrine: Normal functions
Facilitates or controls emergency reactions and alarm responses.
Serotonin: Normal functions
(1) Play a role in emotional and behavioural regulation.
(2) Plays a role in information and motor coordination.
(3) Inhibits children’s tendency to explore their surroundings.
(4) Moderates and regulates a number of critical behaviors, such as eating, sleeping, and expressing anger.
GABA: Implicated role in Psychopathology
Anxiety disorder
Dopamine: Implicated role in Psychopathology
Schizophrenia, Mood disorders; ADHD