Showing 1 - 2 of 2 Research Library Publications

Outlier Detection Using t-test in Rasch IRT Equating under NEAT Design

Posted: | Chunyan Liu, Dan Jurich

Applied Psychological Measurement: Volume 47, issue 1, page(s) 34-47

 

This study used simulation to investigate the performance of the t-test method in detecting outliers and compared its performance with other outlier detection methods, including the logit difference method with 0.5 and 0.3 as the cutoff values and the robust z statistic with 2.7 as the cutoff value.

Category:Assessment-Oriented Research, Scoring

ALS Specific Quality of Life Short Form (ALSSQOL-SF): A Brief, Reliable and Valid Version of the ALSSQOL-R

Posted: | S. H. Felgoise, R. A. Feinberg, H. B. Stephens, P. Barkhaus, K. Boylan, J. Caress, Z. Simmons

Muscle Nerve, 58: 646-654

 

The Amyotrophic Lateral Sclerosis (ALS)‐Specific Quality of Life instrument and its revised version (ALSSQOL and ALSSQOL‐R) have strong psychometric properties, and have demonstrated research and clinical utility. This study aimed to develop a short form (ALSSQOL‐SF) suitable for limited clinic time and patient stamina.

Category:Assessment-Oriented Research, General Measurement, Health Professions