depth perception

Defined by the Revised Handbook for Analyzing Jobs as three-dimensional vision; the ability to judge distances and spatial relationships so as to see objects where and as they actually are. In Part A of “Selected Characteristics of Occupations Defined” in the revised Dictionary of Occupational Titles, the rating for the depth perception component appears seventh in the second set of physical demand ratings under the vertical heading “DP.”
 

Dictionary of Occupational Titles (DOT)

A two volume set that provides descriptions of the most common job classifications in the United States.
 

distraction-based clinical testing

As defined by Matheson, a clinical testing situation in which the evaluee is unaware of all information being gathered with respect to his or her test performance. For example, while a client is focused on a simple dexterity test, a trained evaluator will also be gathering crucial data pertaining to tolerance issues such as sitting, standing, bending, neck flexion, repetitive reaching, level of effort, symptom magnification, weight bearing, etc. It is difficult if not impossible for the tested client to consciously control his or her performance in all evaluated areas while being distracted by the associated work activity. (Kyi, 1997)
 

distraction-based testing

See distraction-based clinical testing
 

duration

The amount of time a person is exposed to a risk factor. The duration of job tasks can have a substantial effect on the likelihood of both localized and general fatigue.
 

dynamic standing

As defined by Matheson, the physical task of being on one’s feet while having the opportunity to regularly walk around. Often used interchangeably with “walking,” although dynamic standing allows more stoppages to perform various activities.