QCMLE = Quasi-CMLE estimates = No

QCMLE=Yes reports quasi-CMLE estimates in the measure tables.

 

For dichotomous data, CMLE item (delta) estimates can be deduced from the CMLE item probabilities for a person with score 1. Since JMLE probabilities are close to CMLE item probabiities, approximate item deltas, known as QCMLE estimates, can be calculated from JMLE probabilities. Similarly for person theta QCMLE estimates.

 

The theory of QCMLE is explained in Rasch Measurement Transactions 2020, 33:1, P. 1751.

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