yeatmanlab / jsCAT / 15239067624

100%

main: 100%

Pull #37

github

fix: correct EAP ability estimation by exponentiating log-likelihood

The EAP ability estimation was incorrectly using log-likelihood values
directly in probability calculations. This fix:

1. Converts log-likelihood back to probability space using Math.exp()
   before using it in the EAP calculation
2. Updates test expectations to match the corrected behavior
3. Simplifies the EAP test to only check that theta decreases
   after an incorrect response to an easy item

The EAP method now properly reduces ability estimates when examinees
fail easy items, which is critical for accurate adaptive testing.

304 of 304 branches covered (100.0%)

Branch coverage included in aggregate %.

1 of 1 new or added line in 1 file covered. (100.0%)

1385 of 1385 relevant lines covered (100.0%)

7979.63 hits per line