R/ListChangeAssessment.R

In mihaiconstantin/chgassesirt: An R Package For Change Assessment and Data Simulation Under the IRT Framework

ChangeAssessment = list(
	
	# thetaPre: matrix where column one is the ability and column 2 the se
	wald = function(thetaPre, thetaPost) {
		cbind(wald = (thetaPost[, 1] - thetaPre[, 1]) / sqrt((thetaPre[, 2] ^ 2) + (thetaPost[, 2] ^ 2)), p = NA)
	}

	# likelihood ratio test
	# score test
)