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Task 1 Reliability - Coggle Diagram
Task 1 Reliability
Item response theory (De Champlain)
Birnbaum/2 parameter model
Assumptions
Unidimensionality
Local independence
Non-speeded tests
(1-PL Only) Equal discrimination parameters across items
Rasch/1 parameter model
Advantageous Properties
Item Parameter Invariance Property
Ability Parameter Invariance Property
Tailored measurement error estimate
Application in Medical Education
Testing Reliability
Time Sampling
Test-Retest
Carry-over effects
Item-Sampling
Parallel Forms
Behavioural Observation
Cohen's Kappa
Difference Score
Internal Consistency
KR20 Formula
Split Half
Spearman-Brown
Even-Odd
Cronbach's alpha coefficient
Cronbach's Alpha
Coefficient alpha (Cortina)
Dimensionality
Precision
Statements
Classical test theory (De Champlain)
Standard error of measurement
Limitations
Example: constructing a local examination
What is reliability?
Measurement error
Different types of reliability
How Reliable is Reliable?
Depends on assessment, stakes and intended interpretation
Standard Error of Measurement (SEM)
Evaluation Criteria (Evers)
Reliability
Important decisions
Influential factors