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Psychometrika

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Narayanan, Pankaja	1
Swaminathan, H.	1
Wilcox, Rand R.	1

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Comparing One-Step M-Estimators of Location Corresponding to Two Independent Groups.

Peer reviewed

Wilcox, Rand R. – Psychometrika, 1992

A method of comparing one-step M-estimates of location for heavy tailed distributions is proposed and investigated. Simulations indicate that the new procedure provides good control over Type I errors and has more power than do some other methods for dealing with heavy tailed distributions. (SLD)

Descriptors: Comparative Analysis, Estimation (Mathematics), Experimental Groups, Mathematical Models

Performance of the Mantel-Haenszel and Simultaneous Item Bias Procedures for Detecting Differential Item Functioning. Laboratory of Psychometric and Evaluative Research Report No. 252.

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Narayanan, Pankaja; Swaminathan, H. – 1993

The purpose of this study was to compare two non-parametric procedures, the Mantel-Haenszel (MH) procedure and the simultaneous item bias (SIB) procedure, with respect to their Type I error rates and power, and to investigate the conditions under which asymptotic distributional properties of the SIB and MH were obtained. Data were simulated to…

Descriptors: Ability, Comparative Analysis, Computer Simulation, Control Groups