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