Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 26 - Think and Explain - Page 501-502: 72


No, we cannot infer that people with large pupils are generally happier than people with small pupils.

Work Step by Step

The size of the pupil can be affected by our emotional state. Sensing something pleasing widens the pupil, and sending something unpleasant contracts the pupil. The absolute size of the pupil has no relation to overall happiness. This is discussed on pages 496-498.
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