Related Experiment Video
Updated: Jul 7, 2026

Applying an eMASS Customization Program as a Research Tool to Evaluate Consumer Benefits
Published on: September 27, 2019
Investigation of 360-degree instrumentation effects: application of the Rasch rating scale model
1St Cloud State University, St Cloud, MN 56301-4498, USA. jtkulas@stcloudstate.edu
Abstract:
Performance appraisals have been frequently investigated for inaccuracies attributable to raters. In addition to rater contributions, problems in measurement can arise from properties of instrumentation. If administered items do not parallel the full range of employee performance, a restriction of range can occur. Here employees are rated similarly (no distinction made) not because of rater error, but because of an instrument floor or ceiling effect. A RASCH measurement procedure was applied to a 360-degree dataset in order to uncover potential instrumentation effects. A similar magnitude ceiling effect was found across rater categories. It is recommended that performance appraisal practitioners consider including items of greater difficulty in their criterion measures.
Related Concept Videos
Response Surface Methodology
The process of RSM involves several key steps:
Self-Report Tests of Personality
Ratio Level of Measurement
A set of data measured using the ratio scale takes care of the ratio problem and provides complete information. Ratio scale data are like interval scale data, except they have a zero point and ratios can be calculated. For...
Factorial Design
