Easy1 markMultiple Choice
Cognition and BehaviourPerceptionDepth CuesBinocular Cues

AQA GCSE · Question 08.2 · Cognition and Behaviour

Which of the following are binocular depth cues? Select the second correct option.

Answer options:

A.

Convergence

B.

Height in plane

C.

Linear perspective

D.

Relative size

E.

Retinal disparity

How to approach this question

The question asks for the second binocular depth cue from the list. You have already identified convergence. Review the list again to find the other cue that requires both eyes. Retinal disparity is the other primary binocular cue.

Full Answer

E.Retinal disparity✓ Correct
The correct answer is E. Retinal disparity is a binocular depth cue. It refers to the fact that each of our eyes sees a slightly different image of the world. The brain fuses these two images and uses the difference (disparity) between them to calculate depth and distance.
Depth perception allows us to see the world in three dimensions. We use both monocular (one eye) and binocular (two eyes) cues to do this. Binocular cues are particularly important for judging the distance of nearby objects. The two main binocular cues are convergence (the inward turning of the eyes) and retinal disparity (the slight difference in the image projected onto each retina). Options B, C, and D are all monocular cues.

Common mistakes

Selecting a monocular cue by mistake. Not remembering that both convergence and retinal disparity are binocular cues.

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