1.2 - Scaling Flashcards
Psychological measurement is:
A process through which numbers are assigned to represent quantities of psychological attributes
Scaling is:
The way in which numerical values are assigned to psychological attributes
3 Key properties of psychological measurement:
- Identity
- Order
- Quantity
Differentiating categories of people who share a psychological feature concerns which property of psychological measurement?
Property of Identity
3 Rules for sorting into categories:
- Categories are mutually exclusive (either/or, not both/all)
- Categories are exhaustive (All fit neatly into each category)
- Identical within categories (w.r.t attribute of interest)
Ranking people by the how much they present with an attribute concerns which property of psychological measurement?
Property of Order
Using numerals to provide information about the magnitude of differences between people concerns which property of psychological measurement?
Property of Quantity
When the number zero doesn’t imply the total absence of an attribute, it is said to be:
Relative/arbitrary
Additivity implies that:
The unit size of measurement does nto change as they are being counted (units are constant)
When additivity is satisifed, the condition is called:
Conjoint measurement
Four Levels of Measurement
- Nominal
- Ordinal
- Interval
- Ratio
Nominal Scales meet which property (or properties) of measurement?
Identity
Ordinal Scales meet which property (or properties) of measurement?
Identity and Order
Interval Scales meet which property (or properties) of measurement?
Identity, Order and Quantity
Ratio Scales meet which property (or properties) of measurement?
Identity, Order, Quantity, and Absolute Zero
