SUMMARY EQUATIONS ON NOTES FOR A RASCH MODEL FOR LIKERT SCALES

Note: This paper contains the Andrich (1978) Rating Scale model, fully and independently developed.


Page 1 of Andrich paper


Page 2 of Andrich paper


Page 3 of Andrich paper


Page 4 of Andrich paper


David Andrich, 1977

MESA Research Memorandum Number 48
MESA PSYCHOMETRIC LABORATORY

This paper was presented at the
AERA Rasch Measurement Workshop
New York, 1977


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