Slide #1.

Ecological Psychology Overall goal – understand perceiving the environment Step 1 – Re-evaluate what can count as a stimulus. Step 2 – Question the concept of “stimulus” itself Back to William James --- Change itself can be a unit Step 3 – Ask: What is there to be perceived? Compare to Koffka –”Why do things look as they do?”
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Slide #2.

Remember Gregory and Beau Lotto? They are not identical, but they are similar in emphasizing that direct experience is not of the world --- leaving perception of the world a big mystery. Tendency has been to build theories around experimental situations and assume results will apply to real world situations. Ecological approach – The “real world” is different from the “non-real.”
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Slide #3.

Ecological Realism There are limits to ambiguity, how we can be fooled. Real things look different from non-real things and those differences can be discovered, within the capabilities of the exploring animal and the opportunities for exploration. Scrutiny of persisting things.
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Slide #4.

Size Constancy – typically stated in terms of size of image; then there is a puzzle. Ecological approach – is something in the array actually constant? See below
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Slide #5.

Point A “stimulating” eye How does Point A get to Point B? Point B
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Slide #6.

Point A “stimulating” eye The eye could move OR the point could move. The result is the same RELATIVE to the eye.
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