2.4 reliability and validity

Question 1

reliability

Answer 1

consistency of a measure

Question 2

test-retest

Answer 2

taking the test more than once

Question 3

interrater
(note: we want high interrater reliability)

Answer 3

interpretation consistency across different observers

Question 4

inter-method

Answer 4

positive correlation of several approaches to measure a feature in an individual
=> SAT and high school grade correlations

Question 5

internal consistency

Answer 5

measures from ONE single test that positively correlate with one another

Question 6

validity

Answer 6

the measure leads to correct conclusions or evaluates the concept that it is designed to do

Question 7

how to determine if a measure leads to valid conclusion?

Answer 7

• to test whether a measure correlates with other existing and established measures of the same concept
  => SAT score and high school GPA