Standardized log-likelihood person-fit diagnostic — eyeprocess_irt_person_fit

Computes a Bernoulli response-pattern log-likelihood standardized against its model-implied mean and variance. Extreme values are model diagnostics, not evidence of cheating, disengagement, or a psychological state.

Usage

eyeprocess_irt_person_fit_lz(observed, expected, min_probability = 1e-08)

Arguments

observed: Observed responses or observed values.
expected: Model-expected probabilities or expected values.
min_probability: Lower probability bound used for numerical stabilization.