00519nam a2200169Ia 4500020001800000082001800018100001900036245004800055260003500103300001200138440003900150504003700189650002500226650004000251650004000291650001800331  a9781593858698  a150.287 DEA-T  ade Ayala, R.J. 0aTheory and practice of item response theory  aNew YorkbGuilford Pressc2009  axv, 448  aMethodology in the social sciences  aincludes bibliography and  index  aItem response theory  aSocial sciencevMathematical models  aSocialsciencesvStatistical methods  aPsychometrics