Experimental Design Flashcards
(29 cards)
Construct validity
How well variables were measured and manipulated
4 validities
Construct, external, statistical and internal
External validity
How well findings generalize to others and contexts
Statistical validity
Strength of association and stat significance
Internal validity
Are there confounds
3 types if claims
Frequency association and casual
Frequency claim
Particular rate/ level of something 1 variable, measured
Association claim
1 variable is associated with another..m2 or more, measured
Casual fclaim
Change in one var are associated with another… 2 var, 1 measured, 1 manip
Scales of measure
Categorical ordinal interval ratio
Categorical
Non numerical names
Ordinal
Events rank in order
Interval
Diff are meaningful, zero exists
Ratio
No true zero
Reliability if measure
Face content predictive convergent
Face validity
Does it make sense
Content validity
Does measure contain all that it’s intended to measure
Predictive/concurrent validity
Concrete outcome that should be expected
Convergent and discriminate validity
Comparing data with other works
Types if sample (representative)
Random cluster stratified systematic
Random sample
= chance to be in study
Cluster sampling
Cluster, sample, all parts in that sample
Stratified sampling
Particular demographic, randomly select from each category
Multistage sampling
Cluster, sample, sample of that sample
