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Flashcards in Measurement Deck (33)
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1
Q

Levels of Measurement

A

Nominal
Ordinal
Interval
Ratio

2
Q

categorial or non metric measures (don’t have units of measure associated with them)

A

nominal and ordinal

3
Q

metric measures (have units of measurement associated with them)

A

interval and ratio

4
Q

What measure has a fixed zero point?

A

Interval

5
Q

one object can be distinguished from another object

A

nominal

6
Q

one object has more/less or is better/worse than another object but you don’t know by how much

A

ordinal

7
Q

one object is so many units more/less than another object

A

interval

8
Q

one object is so many times bigger, faster, heaver, than another object

A

ratio

9
Q

can’t perform any mathematical operations on these measures

A

nominal

ordinal

10
Q

you can perform addition and subtraction but not multiplication and division on this measure

A

interval

11
Q

conceptual definition of a variable

A

describes what a construct means by relating it towards other abstract concepts

12
Q

operational definition of a variable

A

the definition of a variable in terms of the actual procedures used by the researcher to measure and/or manipulate it

13
Q

types of measurement error

A

systematic error

random error

14
Q

measurement error definition

A

the component of the observed score that is the result of factors that distort the score from its true value

15
Q

systematic error definition

A

constant in its effects over time - anything natural or manmade that causes scores to lean one way more than the other

16
Q

random error

A

varies in its effects over time, no known explanation to allow for prediction of the pattern of scores

17
Q

reliability

A

you get the same results over and over

18
Q

methods of assessing reliability

A
test-retest 
alternative forms
split half 
inter-rater
statistical methods
19
Q

test-retest

A

agreement when same test is taken at two different times

20
Q

alternative forms

A

agreement between test scores of two tests that are parallel forms of each other (GMAT, AC, IQ)

21
Q

split half

A

randomly divide items into two subsets and examine the consistency in total scores across the two

22
Q

inter-rater (reliability)

A

level of agreement between different raters

23
Q

statistical methods (reliability)

A

Cronbach’s alpha

24
Q

Validity definition

A

the extent to which an instrument measures what you think it measures

25
Q

types of validity

A
construct 
content 
face 
criterion 
predictive 
concurrent 
convergent 
discriminent
26
Q

construct validity

A

does the manifest variable (the measure) accurately reflect the construct (the true value

27
Q

content validity

A

degree to which measure is representative of the domain it is designed to cover

28
Q

face validity

A

how well the measure appears (at face value) to measure what it’s supposed to

29
Q

criterion validity

A

relationship between performance on one measurement and performance on another measure

30
Q

predictive validity

A

ability of operationalization to predict what it’s theoretically supposed to predict

31
Q

concurrent validity

A

two measures assessed at the same time, if there is a high correlation between the two it has high concurrent validity

32
Q

convergent validity

A

extent to which a measure it should theoretically be associated with (ex. ACT and SAT scores should measure the same thing)

33
Q

discriminant validity

A

extent to which a measure doesn’t correlate with measures it shouldn’t be associated with (SAT scores and knitting speed shouldn’t be correlated)