exam #2 Flashcards
goal of experimental designs
to develop and test a hypothesis about a relation between a personality trait and an outcome, and measure and control for potential third variable
steps of design circle
observation-theory-hypothesis
possible third variable models
-3rd v causes both
-3rd v overlaps with IV
-3rd v as mediator
3rd variable causes both
leads to outcome of interest, but also the IV you are trying to manipulate
3rd variable overlaps with IV
-due to a fourth variable
-4th v causes both 3rd v and IV and overlap, both lead to the outcome of interest
3rd variable as a mediator
-IV may cause outcome of interest, but the IV may lead to the 3rd v, which leads to the outcome
what is important to ensure when making a survey
-informed consent (that its for a project)
-anonymity
how to theoretically use multiple regression analysis to determine if third variable is at play
-if you control for the 3rd v and the correlation is reduced to 0, you know the variance must be explained by the 3rd v
-if it remains constant when controlling for 3rd v, then it rules out 3rd v explanation
how to interpret correlation matrix
-look at Pearson’s r
-sign shows direction of correlation
-size shows strength
Belyayev’s tame foxes
-can you selectively breed tame foxes to get a dog-like animal?
(yes)
-tame foxes barked, wagged tails, had different coats and tails
-some foxes created were tamer than others
-still variation amongst them
personality’s biological foundation (4 parts)
-natural selection: face challenges with certain behaviors, some beneficial others not
-genetic make-up
-brain processes and structures
-personality
why are pet drugs and human drugs often the same
we all have a common ancestor
how to test evolutionary theory
-fossil records
-DNA
-evolutionary tree to provide starting point for observations
-look for similarities and differences
comparative psychology and other hominids
though other hominins are extinct, hominids (great apes), our primate cousins, are still around and may provide evidence
bonobos
might be closer to humans than chimps
-show very similar behaviors to humans
individual reproductive problems (3) and “personality” solutions
-protection: flight/ fight -> group living
-provision: hunger/ thirst -> cooperation
-procreation: sex drive -> sexual selection and competition
sexual selection
characteristics in potential mates that attract others
distal explanation
people used to reproduce just for selection, so that’s what drives all of our behaviors
proximate explanation
usually different from evolutionary perspective, we do things bc love, etc, not just to find the best mate or have best reproductive success
EEA (environment of evolutionary adaptedness)
-differences across primates/ humans arise due to envt changes
-ex: all primates take care of young -> shows evolutionary history
-many behaviors that were useful many years ago (ex hunter gatherer societies) may not be useful now
Buss’ reproductive problems (6) and EEA
-intrasexual competition: ex: women competing with other women
-mate selection: we choose to mate with
-conception
-mate retention: monogamy -> we want to keep our mates with us and not someone else
-cooperation: helping others through joint action to get to shared goal
-caregiving
Buss’ reproductive problems solutions examples
-intrasexual competition: aggression to outdo others, perseverance
-mate selection: being judgmental and careful of others
-conception: having a sex drive
-mate retention: jealousy
-cooperation: agreeableness, people pleasing, extraversion
-caregiving: empathy, compassion, tenderness, altruism
why aren’t we all pretty much the same
random variation and individual differences
types of contingencies
-differences associated with other differences: based on asymmetrical selection pressures (eg sex differences)
-differences associated with envt contingencies
-evolution can cause genes to be expressed in some situations
jealousy amongst the polyamorous
would rather have partner have sex with someone else than fall in love with them
sex and mate selection differences
differences tend to be small between sexes
link to advantageous personality
the genome
envt where high neuroticism is favorable
dangerous envt
envt where agreeableness is favorable
non-competitive envt
genes and traits
-all behavioral traits are heritable and genes matter more than household
-most important: how much of a gene is expressed
identical raised apart
-show evidence of heritability, but envts may still be similar and may not be a good predictor
G x E interactions
-genotype leads us to choose envts and behave in certain ways and elicit reactions from others
issues in behavioral genetics
-genome wide association studies tend to yield massively smaller estimates compared to what is expected in twin studies
-GWAS underestimates, twin study overestimates
caveats of heritability studies
-based on population
-not assumed to replicate across populations
-does not apply to individuals
-everything in the phenotype requires both a genetic foundation and envt “scaffolding”
order of bio psychological theories
-genes and DNA \/
-proteins
-brain structures, NTs, hormones
-thoughts and feelings
-personality
-behavior and effects on reproduction
-evolutionary processing can cause genes and DNA, and be caused by behavior, creating loop
the mind is what the brain does
studies of people w brain damage or of brain stimulation and of brain imaging suggest this
Hans Eysenck’s theory
-extraversion-introversion: extraverts are chronically under stimulated, need to constantly expose themselves to stimulation, and reverse for introverts; cortical arousal thresholds
-neuroticism and sympathetic nervous system thresholds
Eysenck’s complex
-unstable on top, stable on bottom
-introverted on left, extraverted on right
-traits lie in between these 4 quadrants
Gray’s BIS and NT related
-behavioral inhibition system: conditioned avoidance; anxiety/ punishment sensitivity- serotonin (causes you to withdraw from stimuli that was previously punished)
localization and interconnectivity (circuits) of the brain
-heterogeneity of function
-vision is in all parts of the brain, not just one
-removing/ damaging one part still disrupts the process
Gray’s BAS and NT related
-behavioral activation system: conditioned approach; pleasure seeking/ reward sensitivity -dopamine
Gray’s fight/ flight/ freeze and NT related
-fight/flight/freeze: unconditioned avoidance; rage, panic - adrenaline, norepinephrine (something that’s scary since birth, like loud noises)
Bem’s exotic becomes erotic
-biological variables (genes, hormones)
-childhood temperament (aggression, activity level)
-sex-typical/ atypical activity and playmate preferences
-feeling different from opposite/ same sex peers
-physiological arousal to opposite/ same sex peers
-erotic attraction to opposite/ same sex peers
only remaining idea from Bem’s exotic becomes erotic theory
suggested link between biology and SO
Freud and the unconscious
the way we are reflects other things internally
Freud and anxiety/ defense
humans are anxiety ridden and we try to do things to protect ourselves from feeling anxious
Freud and psychological determinism
Freudian slips represent unconscious feelings
Freud and importance of early childhood experience
causes lasting effects on adulthood and personality