Objective 35
Explain the
processes of depth perception and size constancy.
Explanation:
Depth perception is the ability to see objects in 3-D even though the images that strike the retina are 2-D. Depth perception allows us to judge distance. Size constancy lets us perceive the form of familiar objects as constant even while our retinas receive changing images of them.
Depth perception is the ability to see objects in 3-D even though the images that strike the retina are 2-D. Depth perception allows us to judge distance. Size constancy lets us perceive the form of familiar objects as constant even while our retinas receive changing images of them.
Example:
This picture is an example of a visual cliff which is a lab device for testing depth perception. Eleanor Gibson and Richard Walk placed 6-14 month olds on a visual cliff and the had baby's mothers coax them to crawl out onto the glass. Most of the infants refused to showing that they could perceive depth.
This picture is an example of a visual cliff which is a lab device for testing depth perception. Eleanor Gibson and Richard Walk placed 6-14 month olds on a visual cliff and the had baby's mothers coax them to crawl out onto the glass. Most of the infants refused to showing that they could perceive depth.
Example:
The picture shows how a door changes shape as it opens. When the door is closed it is a rectangle shape, and as it opens it looks more like a trapezoid. Because we have size constancy we see the door as constant even though our retinas receive changing images of them.
The picture shows how a door changes shape as it opens. When the door is closed it is a rectangle shape, and as it opens it looks more like a trapezoid. Because we have size constancy we see the door as constant even though our retinas receive changing images of them.