Report on Alpha and End-User Testing of the Level 1 Ergonomics Methodology Guide Supplement for Warehouse and Service Areas.
PACIFIC ENVIRONMENTAL SERVICES INC HERNDON VA
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This report describes the results of usability, reliability and validity tests applied to the Level I Ergonomics Methodology Guide Supplement for Warehouse and Service Areas. Testing was performed in two phases. In phase one Alpha test, five experiences ergonomists used the methodology to evaluate ten representative United States Air Force USAF warehouse and service jobs and develop recommendations to eliminate identified ergonomics hazards. The ergonomists also participated in a focus session to recommend enhancements to the guide. In phase two end-user test, the exercise was repeated by eight USAF bioenvironmental engineering technicians. Inter-rater agreement on the presenceabsence of specific ergonomic hazards ranged from slight to fair. Agreement was higher among experienced ergonomists than among USAF technicians. Technicians found the methodology highly usable. The average time to complete and score the hazard identification checklist was 23.0 minutes, and the average time to select corrective actions for identified hazards was 13.6 minutes. The results suggest the methodology can enable relatively inexperienced USAF technicians to develop the same types of solutions for ergonomic hazards that an experienced ergonomist would recommend.
- Medicine and Medical Research
- Human Factors Engineering and Man Machine Systems