Steven J. Fitzpatrick

IRTGEN: A SAS Macro Program to Generate Known Trait Scores and Item Responses for Commonly Used Item Response Theory Models

Tiffany A. Whittaker, Steven J. Fitzpatrick, Natasha J. Williams et al. · Applied Psychological Measurement · 2003 · 42 citations

Education, Educational Assessment, Educational Measurement +15

An Investigation of the Validity of AP Grades of 3 and a Comparison of AP and Non-AP Student Groups

Judith A. Jennings, Steven J. Fitzpatrick, Barbara G. Dodd et al. · 2002 · 35 citations

Education, Educational Assessment, Educational Measurement +9

Computerized Adaptive Testing With the Partial Credit Model: Estimation Procedures, Population Distributions, and Item Pool Characteristics

Joanna S. Gorin, Barbara G. Dodd, Steven J. Fitzpatrick et al. · Applied Psychological Measurement · 2005 · 31 citations

Education, Educational Assessment, Educational Measurement +11

A comparison of three polytomous item response theory models in the context of testlet scoring.

Karon F. Cook, Barbara G. Dodd, Steven J. Fitzpatrick · PubMed · 1999 · 23 citations

Education, Educational Assessment, Educational Measurement +17

The Effect of Population Distribution and Method of Theta Estimation on Computerized Adaptive Testing (CAT) Using the Rating Scale Model

Ssu‐Kuang Chen, Liling Hou, Steven J. Fitzpatrick et al. · Educational and Psychological Measurement · 1997 · 18 citations

Social Sciences, Behavioral Sciences, Psychology +15