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All functions

td_calibrate()
Calibrate each language group separately
td_dif()
Robust linking, anchor selection and small-sample DIF
td_features()
Which item features predict DIF?
td_impact()
Does item-level DIF add up to different pass rates?
td_mh()
Mantel-Haenszel DIF with purification (conventional baseline)
td_report()
Draft a comparability report
td_sensitivity()
Sensitivity of the comparability conclusions to the linking assumption
td_simulate()
Simulate a source-language and a translated administration with known DIF