In visual inspection, perception, fatigue, and attitude are categorized as:

• A. Physiological factors
• B. Uncontrolled factors
• C. Production factors
• D. Classic distress factors

Answer: (A)

In visual inspection, how a worker’s body and senses affect what is seen is grouped under physiological factors. Perception is the way the eyes and brain interpret visual input, a process rooted in the body’s sensory and neural systems. Fatigue is a physical state that changes visual acuity, contrast sensitivity, and reaction time, all tied to how the body functions. Attitude also influences how attentively and consistently someone watches for defects, through states of arousal and focus that are linked to the nervous system and overall physical condition. Because these elements originate from the observer’s bodily functions and directly affect seeing and judging parts, they’re classified as physiological factors.