The Spearman-Brown formula is used to determine the __________ reliability of an instrument.
a. item-to-item
b. internal-consistency
c. test-retest
d. alternative-form
Question 2
What is face validity?
a. whether the instrument seems on the surface (or face) to be measuring something relevant.
b. whether the instrument can generalize a causal relationship across persons and settings
c. the degree to which a measure correlates with other outcome measures
d. the ability to discriminate