AN ALTERNATE DEFINITION OF THE ETS DELTA SCALE OF ITEM DIFFICULTY
AN ALTERNATE DEFINITION OF THE ETS DELTA SCALE OF ITEM DIFFICULTY
Holland, Paul W.;Thayer, Dorothy T.;
1985-12-01 00:00:00
http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.pngETS Research Report SeriesUnpaywallhttp://www.deepdyve.com/lp/unpaywall/an-alternate-definition-of-the-ets-delta-scale-of-item-difficulty-CLSaCT3iCN
AN ALTERNATE DEFINITION OF THE ETS DELTA SCALE OF ITEM DIFFICULTY
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