chapter three Flashcards
reliability
a consistent test
what are the two ways to get a score
test-retest reliability and integrated reliability
a contains what three scores?
observe, true, and error score
observed score
the score you get
true score
what your typical score would be on the test
error score
gap between observed score and true score
formula for observed score
true score + error score
trait error
sources of error the reside in the individual taking the test
ex) doubt
method error
errors in testing situtation
correlation coefficient
how closely two variable are related to each other
test retest reliability
is a test reliable over time
aka stability/time sampling
what is the problem with test retest reliability
practice effect
what is the formula for interrupter reliability
number of agreements/number of possible agreements
parallel forms of reliability
the equivalence of similarity between two different forms of the same test
internal consistency reliability
when the items on the test are consistent with another and are likely to measure the same things
split half reliability coefficient
splitting the test into two halves and comparing the scores
