170 likes | 351 Vues
Performance Rating. INSY 3021 Auburn University Spring 2008. Normal Performance. Benchmarks 0.38 min for walking 100 ft, details should state terrain, load, clothing, etc.. The more clear-cut and specific the definition, the better. Rating Characteristics.
E N D
Performance Rating INSY 3021 Auburn University Spring 2008
Normal Performance • Benchmarks • 0.38 min for walking 100 ft, details should state terrain, load, clothing, etc.. • The more clear-cut and specific the definition, the better.
Rating Characteristics • Accuracy (paramount), should not deviate by more than 5% from other trials • Consistency, Rating higher or lower every time is easier to correct than fluctuations • Desirable systems are: Simple, concise, and easy to explain
Rating Types • For short element time/cycle times (15-30 sec), it may be more practical to rate the entire study rather than individual elements (TP) • For longer elements/cycles (over 30 sec), individual ratings maybe necessary (TP)
Rating Methods • Westinghouse System • Synthetic Rating • Speed Rating • Objective Rating
The Westinghouse System • Evaluates performance with respects to: • Skill, effort, conditions, and consistency
Skill • “Proficiency at following a given method.” • Proper coordination of mind and hands • Six skill degrees/classes: Poor, fair, average, good, excellent, and super • + 15 to – 22 range
Effort • “Demonstration of the will to work effectively.” Stopwatch • Six effort classes: Poor, fair, average, good, excellent, and excessive • + 13 to – 17 range
Conditions • Present conditions with respect to normal conditions • Temperature, ventilation, light, noise, etc… • Six condition classes: Poor, fair, average, good, excellent, and ideal • + 06 to – 07 range
Consistency • Elemental times that continually repeat would be consistent • Six consistency classes: Poor, fair, average, good, excellent, and perfect • + 04 to – 04 range
Overall Performance • Algebraically sum the four individual factors • Add this to one • Courses available to train analysts, with approximately 25 hours spent watching videotapes to develop the needed skill
Synthetic Rating • Determines a performance factor for elements of the cycle by comparing actual elemental observed times to those developed by analyzing fundamental motion data, such as MTM or MOST
Speed Rating • Only considers the rate of accomplishment of the work per unit time • First determine if the performance is above or below normal • Quantify the difference between the actual output and that expected by a “NORMAL OPERATOR” • Can be tied to benchmarks such as walking, dealing cards, VO2
Objective Rating • Establishes a single work assignment, against which the pace of all others are measured • A second factor relates its relative difficulty • Influences are: Amount of body used, foot pedals, bimanualness, eye-hand coordination, handling or sensory requirements, and load • Multiply the two factors together
Rating Training & Maintenance • Provide initial, refresher, and continuing training to all assigned analysts • Record all ratings in analysts file, with the deviations from other analysts • Periodically validate their skill level