ap psych exam review Flashcards
positive correlation
variables have a direct relationship (one goes up, the other goes up too)
negative correlation
variables have an inverse relationship (one goes up, the other goes down)
single-blind
participants aren’t aware of the condition/group they’re assigned to
double-blind
participants + experimenters aren’t aware of what condition people are assigned to. (most frequent in drug studies)
random sample
randomly choose people for the experiment. (increases generalizability)
random assignment
randomly assign people into control or experimental group
mean
average; sum values up then divide by amount
mode
occurs most often
median
middle of data set
negatively skewed
backwards P, mean on the left hand side
positively skewed
P, mean on the right hand side
standard deviation
avg. amt. the scores are spread from the mean
all ethical guidelines
confidentiality, informed consent, informed assent (minors), debriefing, no harm
self report bias
errors that occur in data from surveys
social desirability
people lie on surveys to look good
wording effects
the way the question is worded can sway answers
representative sample
people are representative of a population
convenience sample
people chosen for experiment based on accessibility and ease. leads to sampling bias because these are not representative samples.
sampling bias
when convenience sampling is used. not representative of a population
confirmation bias
seek out data to confirm your beliefs
hindsight bias
“i knew that was going to happen”
overconfidence
overestimate ourselves
central nervous system
brain and spinal cord
peripheral nervous system
rest of nervous system outside of brain and spinal cord (central NS), relays to central NS