ch 2 Flashcards
The Cognitive Behavioral Paradigm
Combines cognitive theory and behavioral theory
what does the cog. behavioral paradigm emphasize
Emphasizes
- schemas
- attention
- cognitive distortion about life experiences and their influence on behavior
Factors that cut across the Paradigms
- Emotion
- Sociocultural factors
- Interpersonal factors
Diathesis-Stress: An Integrative Paradigm
- An integrative paradigm that links genetic, neurobiological, psychological, and environmental factors
- Diathesis (underlying predisposition) + stress (environmental factors
the paradigms
- the genetic paradigm
- the neuroscience paradigm
- cognitive behavioral paradigm
- diathesis-stress paradigm
paradigm
Perspective or conceptual framework from w/in which a scientist operates
The Genetic Paradigm
Heredity plays role in most behavior
genes
Carriers of genetic information (DNA)
genes are impacted by
environmental influences
E.g. stress, relationships culture
what is the relationship btwn genes and environment
bidirectional (nature via nurture)
Gene expression:
Proteins influence whether the action of a specific gene will occur
Polygenic transmission:
Characteristics, behaviors etc, are expressed through multiple gene pairs rather than one pair
Neumonic- a group of Polly pockets that all make up one anxiety
Heritability
Extent to which variability in behavior is due to genetic factors - in populations not people
range = 0.00 to 1.00
types of environments
shared environment
nonshared environment
shared environment
Events and experiences that family members have in common
nonshared environment
Events and experiences unique to each family member
behavior genetics
Study of the degree to which genes and environmental factors influence behavior
Neumonic: behavior (sassy lady) and genetics ( genes) with a temperature thing asking this much?
Genotype
Genetic material inherited by an individual
Unobservable
Neumonic: bobs burgers gene is invisible just like his father
phenotype
- Expressed genetic material
- Observable behavior and characteristics
what do phenotypes depend on
- Depends on interaction of genotype and environment
Molecular Genetics
Identifies particular genes and their functions
Alleles
Different forms of the same gene
Found in same location (locus) of a chromosome pair
Neumonic: the Ls in alleles are all genes, found in the same locust in a chromosome pair
Polymorphism
Difference in DNA sequence on a gene occurring in a population
Neumonic: animorphs- imagine dna sequence changing
current mollecular genetics focus on
Current molecular genetics focus on identifying differences between people in the sequence and structure of their genes
Transcription:
How DNA is turned to mRNA
Neumonic: transcript that says DNA going through a machine comes out mRNA
SNPs (Single Nucleotide Polymorphisms)
differences between people in the sequences of genes
Neumonic: two people in shirts that say snp act and snp gct
where do SNPs occur
Differences in a single nucleotide (ATG or C) in the DNA sequence of a particular gene
CNVs (Copy Number Variations)
Identify differences between people in structure of genes; can be additions or deletions in DNA w/in genes
where can CNVs be present
Can be present in single gene or multiple genes
GWAs (Genome-wide association studies)
- Key method to examine SNPs and CNVs
- Isolate differences in sequence of genes between people who have psychological disorder and those who don’t
Knockout Studies
Removing specific genes in animals to observe effect on behavior
Chemical Bases of DNA
Pairs of A and T and G and C
Neumonic: in the dna lab- chemicals labeled a&t g&c
Gene–Environment interactions
One’s response to a specific environmental event is influenced by genes
Epigenetics
Study of how the environment can alter gene expression or function
how does epigenetics work
Chemical “marks” (ex DNA methyl tags or histones) that are attached to and protect the DNA in each gene, control gene expression. The environment can directly influence the work of these marks
Cross-fostering adoptee method
Rats born to mothers w/ low parenting skills raised by mothers with high parenting skills showed lower levels of stress reactivity
- Mothering responsible for turning on/up expression of particular gene
Reciprocal Gene–Environment Interaction
- Not only does the environment influence genes but genes can influence the environment that will in turn influence the genes
- Genes predispose individuals to seek out situations that increase the likelihood of developing a disorder
two challenges of the genetic paradigm
- Specifying exactly how genes and environments reciprocally influence one another
- The complexity that several genes will contribute to a specific disorder
two challenges of the genetic paradigm
- Specifying exactly how genes and environments reciprocally influence one another
- The complexity that several genes will contribute to a specific disorder
The Neuroscience Paradigm
Examines the contribution of brain structure and function to psychopathology