Chapter 5 Flashcards
Reliability
How consistent is this type of measurement?
True Score
Is the measured value close to the true score? (Accuracy)
Measurement Error
Is there inconsistency in the measurement/does it have high variability? (Precision)
Validity
Is this the right way to measure this?
Reactivity
Subject’s awareness of how the measurement works
Measurement Scales
Nominal
- Label (Qualitative)
- No Rank or Order
Lowest
Measurement Scales
Ordinal
- Labels
- Rank or Order
- Distance Random
Higher than nominal
Measurement Scales
Interval
- Numerical
- Rank or Order
- No “True” 0
- Distance NOT Random
Higher than ordinal
Measurement
Ratio
- Numerical
- Distance NOT Random
- “0” Value
Highest
6 Ways to Determine Validity
Face Validity
Does it seem right?
6 Ways to Determine Validity
Content Validity
Does it seem right based on how other people do it?
6 Ways to Determine Validity
Predictive
Can it predict behavior?
6 Ways to Determine Validity
Concurrent Validity
Does it correlate with how the person is currently behaving?
6 Ways to Determine Validity
Convergent
Does it correlate with another type of measurement of the same thing?
6 Ways to Determine Validity
Discrimination
Does it NOT correlate with something that isn’t related?