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Psych Assessment (Reliability (Types (Internal Consistency (Split-Half,…
Psych Assessment
Reliability
Types
Test-Retest
Alternate Forms
Immediate
Delayed
Internal Consistency
Split-Half
Kuder-Richardson
Cronbach's Alpha
True Score Model
Raw score= True score + Error
True score variance=Reliability coefficient
Usage
Selecting test
.8+ is good
Interpreting test score
CI for true score
Critical Difference
SEdiff*1.96
Test construction
Item Analysis
Classical Theory
Item Response Theory
Validity
Types
Content
Achievement test
Non-emperical
Construct
Convergent
Divergent
Criterion
Predictive
SEest
CI for predicted score
SEest*1.96
Concurrent