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Prior Cognitive Task Analysis of Test Item Difficulty
test item difficulty cognitive task analysis prior diffculty
2015/7/29
The pass rate of a test item often serves as an index of its difficulty. This posterior index, though easy to obtain and definite, is susceptible to students' learning level. It cannot play a leading ...
Robustness of Lord’s Formulas for Item Difficulty and Discrimination Conversions Between Classical and Item Response Theory Models
Lord’s Formulas Item Difficulty Discrimination Conversions Between Classical Item Response Theory Models
2015/6/30
Lord (1980) proposed formulas that provide direct relationships between IRT discrimination and difficulty parameters and conventional item statistics. The purpose of the present study was to determine...