Results 231 to 240 of about 24,174,650 (281)

Population Difficulty and Discrimination in Item Response Theory: A Complement to Traditional Item Parameters

open access: yesJournal of Educational Measurement, Volume 63, Issue 3, Fall 2026.
Abstract Traditional Item Response Theory (IRT) parameters for item difficulty and discrimination often depend heavily on the specific assumptions and constraints of the chosen model. This study introduces and evaluates population difficulty and population discrimination as complementary metrics that generalize across dichotomous and polytomous item ...
Joakim Wallmark
wiley   +1 more source

Re‐evaluation of salt of aspartame‐acesulfame (E 962) as food additive

open access: yesEFSA Journal, Volume 24, Issue 9, September 2026.
Abstract The present opinion deals with the re‐evaluation of salt of aspartame‐acesulfame (E 962) as a food additive. The Panel considered that upon ingestion, E 962 dissociates into aspartame and acesulfame ions which correspond to those of the authorised sweeteners aspartame (E 951) and acesulfame K (E 950). The Panel therefore assessed the safety of
EFSA Panel on Food Additives and Flavourings (FAF)   +34 more
wiley   +1 more source

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