Which term describes the ability to judge distance and speed of an object in space?

• A. Visualization
• B. Depth perception
• C. Pursuit
• D. Anticipation time

Answer: (B)

Depth perception is the ability to judge how far away something is and how fast it seems to move. This skill comes from combining information from both eyes (binocular cues like retinal disparity and convergence) with cues from one eye (monocular cues such as relative size, perspective, texture gradient, motion parallax, and shading). Being able to gauge distance and speed is essential for interpreting where objects are in space and how their positions change over time. Other terms describe different visual functions: visualization is about forming mental images, pursuit refers to the eyes smoothly following a moving object, and anticipation time relates to predicting and reacting timing rather than judging distance or speed.