Ch. 15 Flashcards Preview

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Flashcards in Ch. 15 Deck (23):
1

Integrator reliability

Two or more individuals should make an observation or one observer should examine the behavior on more than one occasion

2

Validity

Measure accurately = does the instrument measure what it claims to measure?

3

Content validity

Criterion related, construct

4

Concurrent validity

Degree of correlation between two measures

5

Predictive validity

Measure of concept and some future measure of the concept

6

Face validity

Refers to expert verification that the instrument measures correctly

7

Construct validity

Test measures a theoretical construct or trait

8

Divergent validity

Differentiates one construct from others that are similar

9

Reliability

Measure consistently

10

Stability

Homogeneity or internal consistency, equivalence

11

Reliability coefficient

Measures the relationship between error variance, true variance, and the observed score

12

Parallel reliability

Using two comparable forms of an instrument to test the same concept

13

Integrator reliability

Two or more investigators are collecting data

Kappa level of 0.9 is good

14

A measure can be considered to be reliable while...

Unlikely found to be valid

15

Error variance

The differences in scores between actual measurement of behavioral changes and thee extent of variability in test scores

16

Chance error

Variability of scores due to random confounding variables

17

Test score

Error variance plus the true score

18

Constant error

Answering in a socially desirable way (validity effected)

19

Chronbachs alpha

Most common test to study validity

Measures the homogeneity of an instrument with a like-type format

20

Split half

Provides a measure of consistency in terms of sampling the content

21

KR-20

Estimate of homogeneity used for instruments that have a dischotomous response format (yes/no)

Coefficient of 0.1 shows no correlation among the error variance, true variance or observed variance

22

Equivalence

Consistency or agreement among observers using the same measurement instruments

Parallels or alternate form

23

Test-retest

Test of stability

The lower the coefficient the lower the correlation

Does not prove measurement error