Loading

Module 1: Illusions visuelles

Notes d'étude
Study Reminders
Support
Text Version

Illusion de la lune

Set your study reminders

We will email you at these times to remind you to study.
  • Monday

    -

    7am

    +

    Tuesday

    -

    7am

    +

    Wednesday

    -

    7am

    +

    Thursday

    -

    7am

    +

    Friday

    -

    7am

    +

    Saturday

    -

    7am

    +

    Sunday

    -

    7am

    +


Psychology -> Moon illusion

Moon illusion

ANIMATION

This is when the moon appears to be larger on the horizon than when it is at its zenith, high in the sky. This is an illusion because the moon's real size does not change. The retinal size of the moon at the horizon and at the zenith is the same and the moon's actual distance from the observer also remains the same at the two locations. However, as Kaufman and Rock (1962) propose, the horizon appears further away to the observer than the zenith because of depth and distance cues. We then make the conclusion that if two objects cast identical retinal images, but are at different distances, then the farther object must be larger than the nearer object, again misapplying the visual perceptual principle of size constancy. Thus, we incorrectly perceive the horizon moon as larger than the zenith moon.