class Flashcards
validity
are you measuring what you want to be measuring
aplllicability
usefulness
can it be used in the real world
extent
extraneosu variables
variables that tou cant change
eg.prexisting memory
causes differneces in tests for diff people
reliability
consistency
test-retest
interrater
interrater
someone looking at the
two people
opinions
maybe bias not if theres 2
lab- less apllicable
demand charactersiric
internal
extent to which variables have been controlles
no outside variables- def testing if independent is affecting dependent
cecologicsl
apply outsode of lab more useful
can generalise outside world
face
peer reviews
whether it seems valid
grave
quasi experiment
independent variable differs in general in the population
eg.gender
more effect of extraneous. variables
methodological design
within- all conditions eg.drinking coffee or not compare their performances in both conditions
between-two groups one group drink diff group don’t compare
counterbalance
random allocation
population
everyone were interested in
eg.students depending on who ur testing
sample
small number of people with same characteristics of the population
volunteer ,random ,systematic, stratified sampling reflecting characteristics
number in acatgory /total x sample size
in the graph it shows that the identical twins have a higher concordance rate of 65% whereas nonideanitcal twins have a cocnordance rate of 18%. This is due to their biological nature as identical twins have exaclty the samr phenotypes and genotypes and therefore they are both likely to have similar abilities for example in this case they have similar maths abilities however due to nurutre bdbi
