THE PSYCHOPHYSICS OF MENTAL TEST DIFFICULTY

[1] Farnsworth PR, 1931, GENET PSYCHOL MONOGR, V9, P291

[2] THE DETERMINATION OF ITEM DIFFICULTY WHEN CHANCE SUCCESS IS A FACTOR [J]. PSYCHOMETRIKA, 1936, 1 (04) : 259 - 264

[3] GUILFORD JP, 1936, PSYCHOMETRIC METHODS, P440

[4] The phi gamma hypothesis [J]. JOURNAL OF EXPERIMENTAL PSYCHOLOGY, 1928, 11 : 293 - 305

[1] Farnsworth PR, 1931, GENET PSYCHOL MONOGR, V9, P291

[2] THE DETERMINATION OF ITEM DIFFICULTY WHEN CHANCE SUCCESS IS A FACTOR [J]. PSYCHOMETRIKA, 1936, 1 (04) : 259 - 264

[3] GUILFORD JP, 1936, PSYCHOMETRIC METHODS, P440

[4] The phi gamma hypothesis [J]. JOURNAL OF EXPERIMENTAL PSYCHOLOGY, 1928, 11 : 293 - 305