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Psyc3302 > Week 5-6 Validity > Flashcards

Week 5-6 Validity Flashcards

1
Q

validity

A

the degree to which evidence and theory support the interpretations of test scores entailed by the proposed uses of a test

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2
Q

four important implications of this definition of validity

A

1 Validity concerns interpretations and uses of scores
2 Validity is not a property of the test itself
3 Validity is a matter of degree
4 Validity is based on theory and evidence

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3
Q

Validity is a crucial basis for:

A

1 the meaningful interpretation of behavioural research
2 making sound societal decisions based on such research
3 making informed test-based decisions about individuals

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4
Q

Content validity:

A

The degree to which the content of a test is representative of the domain it’s supposed to cover.

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5
Q

criterion-related validity

A

a measure obtained by evaluating the relationship of scores obtained on the test with scores on other tests

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6
Q

construct validity

A

a measure obtained by performing an analysis of:

a) how scores on the test relate to other test scores and measures, and
b) how scores on the test can be understood within some theoretical framework

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7
Q

Test Content

A

This is the match between the content of a test and the content that should be included in the test

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8
Q

two types of validity relevant to test content:

A

1 Content validity

2 Face validity

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9
Q

two key threats to content validity:

A

Construct-irrelevant content

Construct under-representation

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10
Q

Face validity

A

what a test appears to measure to the person being tested, rather than what the test actually measures

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11
Q

Content validity can be evaluated only by ________ in a field, whereas face validity must be assessable by __________ •

A

Experts, non-experts

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12
Q

Internal structure

A

the way the parts of a test are related to each other:
• some tests include items that are highly correlated with each other, forming a single cluster
• other tests include items that fall into two or more clusters

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13
Q

Factorial validity concerns the match between the ________ internal structure of a test and the structure the test ________ possess

A

actual ,should

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14
Q

Response processes

A

there should be a close match between the psychological processes that the respondents actually use when completing a measure, and the process that they should use

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15
Q

methods for obtaining validity evidence of the response processes include:

A
  • “think-aloud” procedures
  • cognitive interviews
  • focus groups
  • response times
  • eye movements
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16
Q

Associations with other variables

A

the way in which the construct is connected to other relevant psychological variables

  • Our theoretical understanding of the construct we are trying to measure should lead us to expect a particular pattern of associations with other variables
  • This type of validity evidence emphasises the match between measures predicted and observed associations with other measures
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17
Q

Convergent evidence (convergent validity)

A

the degree to which test scores are correlated with tests of related constructs

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18
Q

Discriminant evidence (discriminant validity)

A

the degree to which test scores are uncorrelated with tests of unrelated constructs

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19
Q

Concurrent validity evidence

A

the degree to which test scores are correlated with other relevant variables that are measured at the same time as the test undergoing validation

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20
Q

Predictive validity evidence

A

the degree to which scores on the test undergoing validation are correlated with relevant variables that are measured at a future point in time

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21
Q

consequential validity

A

refers to the social and personal consequences associated with using a particular test

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22
Q

what kind of test is associated with greater consequential validity

A

a non-biased test

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23
Q

three other types of validity that arguably do not fit as strongly within this construct/theory framework:

A

1 Criterion Validity
2 Induction-Construct Development Interplay
3 Measurement as Theory

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24
Q

A criterion

A

the standard against which a test or test score is evaluated

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25
Q

2 examples of criterion validity

A

Concurrent validity and predictive validity

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26
Q

Induction-Construct Development Interplay

A

bottom up theory development, e.g FFM

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27
Q

Measurement as theory

A

This approach rejects much of the unitary view except the importance attached to constructs and the theoretically based examination of response processes

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28
Q

Internal consistency reliability is typically estimated with

A

Cronbach’s α

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29
Q

Cronbach’s α assumes

a) unidimensionality
b) multidimensionality

A

unidimensionality

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30
Q

Factorial validity concerns the ___________ ___________ of test scores

A

internal structure

31
Q

The test items on a unidimensional test would also have the property of ___________ ____________

A

conceptual homogeneity

32
Q

Is a total test score calculated for a multidimensional tests with uncorrelated dimensions?

A

no, a score is obtained for each dimension, but the dimensions scores are not combined to compute a total test score

33
Q

The communality for a given variable can be interpreted as

A

the percentage of variation in that variable explained by the extracted components

34
Q

As a general statement, you want to see communalities that are at least

A

.04 for items or .09 for subscales

35
Q

Items are less reliable than subscales, so they have _______ communality expectations

A

lower

36
Q

The sum of the “Initial Eigenvalues” is equal the number of

A

variables included in the analysis

37
Q

Component loadings refer to the associations between ______ and ____________

A

items, components

38
Q

Component loadings vary between

A

-1 and +1

39
Q

The size of the loading indicates the degree of association between a _______ and a ______________

A

item, component

40
Q

Component loadings further from 0 indicate ____________ associations

A

stronger

41
Q

A positive loading indicates that people who respond with a high score on an item have a ________ level of the underlying component

A

high

42
Q

A negative loading indicates that people who respond with a high score on an item have a _____ level of the underlying component

A

low

43
Q

As a general statement, useful component loadings are either _____ or ____ or greater

A

.20 (Items) or .30 (subscales)

44
Q

Simple structure occurs when each item is strongly linked to

A

one and only one component

45
Q

One way to help achieve simple structure is to

A

rotate the solution

46
Q

should you always rotate the solution?

A

Yes

47
Q

How many components do you need to rotate the solution?

A

two or more

48
Q

If you extract only one component, then there will only be the

A

“Component Matrix”

49
Q

If you have a minimum of 5 variables per factor and the communalities all exceed _____, then a sample size of about should be sufficient

A

.20, 150

50
Q

There are no simple guidelines to follow, because the size of the sample required will be dependent upon two main factors:

A
  • the amount of communality associated with the variables (higher communality means less sample size required)
  • the number of variables per factor (higher number of variables per factor means less sample size required)
51
Q

4 Methods of evaluating construct validity

A

1 Focussed associations
2 Sets of correlations
3 Multitrait-Multimethod Matrices
4 Quantifying Construct Validity

52
Q

3 Factors affecting validity coefficients

A

1 True associations
2 Measurement error
3 Restricted range

53
Q

The interconnections between a construct and other related constructs are known collectively as a

A

nomological network

54
Q

validity coefficient

A

correlation coefficient between a test score (predictor) and a performance measure (criterion)

55
Q

Example of a focused association

A

SAT and first year university marks

56
Q

Validity generalization studies are intended to evaluate the predictive utility of a test’s scores across

A

a range of settings, times, situations, etc

57
Q

Sets of correlations

A

large nomological networks incorporating a wider variety of other constructs, with differing levels of association with the main construct

58
Q

validity generalization

A

is a process of evaluating a test’s validity coefficients across a large set of studies, comparable to a meta analysis

59
Q

Is the judgement about the degree to which the pattern of coefficients matches the expectation

a) objective
b) subjective

A

A subjective

60
Q

Validity generalization studies can essentially address three questions:

A

1 estimate the average level of predictive validity across studies
2 estimate the degree of variability associated with the validity coefficients
3 identify sources of systematic variability in the validity coefficients

61
Q

a correlation between two scores may conflate two sources of variance

A
  • trait variance (the good stuff)

* method variance (the bad stuff)

62
Q

large correlations between different traits using the same measurement method suggests that the correlations are simply due to

A

a response style (i.e., method variance)

63
Q

using MTMMM we want a lot shared trait variance, particularly identical traits measured using

A

different methods

64
Q

The multitrait component of the study refers to

A

administer the questionnaire measuring the trait of interest in addition to other measures such as a measure of impulsivity, conscientiousness, and emotional stability

65
Q

the multimethod component refers to

A

measuring the trait of interest and the additionally trait using multiple methods, e.g self report and acquaintance report

66
Q

Sources of variance for Heterotrait-Heteromethod correlations

A

Nonshared trait variance, nonshared method variance

67
Q

The most stringent test in a MTMM analysis is to determine whether the ________________ _________________- correlations are “meaningfully” larger than the ____________- ________________ correlations

A

monotrait-heteromethod, heterotrait-monomethod

68
Q

one of the limitations associated with MTMMM

A

There are no clear guidelines to evaluate the differences in the mean correlations

69
Q

At the very least, the ___________ ___________ correlations need to be larger than the ______________ _____________correlations

A

monotrait-heteromethod,heterotrait-monomethod

70
Q

Quantifying construct validity (QCV)

A

this procedure requires researchers to predict the magnitude of the correlation between their measure of interest and their selected criteria

71
Q

3 advantages of the QCV approach

A

1 It forces researchers to consider carefully the expected pattern of convergent and discriminant associations that would make theoretical sense
2 It forces researchers to make explicit quantitative predictions about the pattern of associations
3 It provides a single value reflecting the overall “goodness-of-fit” between the predicted and actual associations

72
Q

using the QVC, why would a low correlation between the predicted and actual associations not necessarily reflect poor validity

A

because the predicted associations may simply be a poor reflection of a construct’s nomological network

73
Q

If a test’s or a criterion’s reliability is much lower than .70, there are two options:

A

1 disregard—or reduce the weight given to—a validity coefficient based on poor reliability
2 adjust the validity coefficient to account for measurement error

74
Q

a correlation between two variables can be reduced if the range of scores in one or both variables is

A

artificially limited or restricted

Psyc3302 (3 decks)

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