Research Methods Flashcards
What kind of data is nominal, ordinal, and interval
Quantitative
Describe ordinal data
Data is ordered in some cases way, but intervals between each item are unequal (arbitrary units)
Describe interval data
Data measured on a scale where distance between each item is the same
(Seconds, calories, MPH)
Describe nominal data
Data in separate categories
Define validity
The extent to which an observed effect is genuine -
Does it measure what’s its supposed to?
-
Can it be generalised beyond the research setting within which it was found?
Face validity
A measure is scrutinised to determine whether it appears to measure what’s its supposed to
Define concurrent validity
The extent to which a psychological measure relates to an existing similar measure
Define ecological validity
A form of external validity
Define temporal validity
The extent to which findings can be generalised to other times
What’s levels of measurement
Quantitative data ca be classified into levels of measurements:
- nominal
- ordinal
- interval
Describe nominal data
Discrete because one item can only appear in one category
Describe ordinal data
Such as a likert scale
Describe interval data
Based on numerical scales that include equal units, that are precisely defined
What are the two related experimental designs
Matched pairs
What’s the unrelated experimental design
Independent groups
Unrelated design
+
Nominal data
Chi-Squared
Rest of both correlation and difference
Related design
+
Nominal data
Sign test
Unrelated design
+
Ordinal
Mann-Whitney
Related design
+
Ordinal data
Wilcoxon
Unrelated design
+
Interval data
Unrelated T-test
Related design
+
Interval data
Related t-test
Test of association/correlation
+
Nominal
Chi-squared
Test of correlation/ association
+
Ordinal data
Spearman’s rho
