A systematic method for analyzing magnitude estimation data

Abstract

Magnitude estimation is frequently used for measuring the strength of subjective sensation in ergonomics studies. Although the data obtained by magnitude estimation are easy to interpret, caution must be taken in both planning/conducting an experiment and analyzing the results. This study presents a systematic and generalized method for analyzing the magnitude estimation data. Critical considerations and recommendations are suggested in each stage of planning, conducting, and analyzing an experiment. An interactive software program (named MEDAS: Magnitude Estimation Data Analysis System) was developed which implemented the rules and procedures for analyzing the magnitude estimation data. Relevance to industry This study presents the rules and procedures for planning, conducting, and analyzing an ergonomics experiment using magnitude estimation. The results of this study can aid ergonomists in designing and evaluating product alternatives based on subjective data obtained by magnitude estimation.