Ch. 4 (Psych 309)

Front 1

standard error of measurement:

Back 1

the standard deviation of errors

Front 2

parallel forms reliability:

Back 2

using two separate tests measuring the same thing with different forms of items that follow, however, the same level of difficulty

Front 3

Kuder-Richardson 20 (KR20):

Back 3

the formula used to determine reliability of a test made of dichotomous items

Front 4

coefficient alpha (Cronbach’s α):

Back 4

the test used to measure the reliability of non-dichotomous--likert or likert-type scales

Front 5

Time sampling error:

Back 5

error attributed to the test being given at two different points in time

Front 6

Item sampling error:

Back 6

error attributed to equivalent items that are used to measure the same thing in two different tests

Front 7

Internal consistency error:

Back 7

error attributed to the level of consistency between self-correcting test items

Front 8

observer differences:

Back 8

error attributed to the amount of differences between how observers report their observations

Front 9

discriminant analysis:

Back 9

examining the correlation between performance on a given item and the total score on a test

Front 10

correction for attenuation:

Back 10

using reliabilities between two tests and their correlations to correct for amounts of error in either test