If you are doing a quick study check, you may be able to answer many of these questions using just a few words. To sharpen your writing skills, write a longer essay expanding on the points in your short answer.

1			According to your text, adaptation is vital to survival. Why is this? What would daily life be like without adaptation?
2			Color vision is a significant facet to the human sensory system. What differentiates the Young-Helmholtz trichromatic theory from the opponent-process theory?
3			Explain the meaning of the terms bottom-up and top-down processing. What are the key differences between the two?
4			Monocular depth cues involve only one eye to see depth and dimension. How did the artist Raphael Sanzio utilize monocular cues in his paintings?
5			According to your text, illusions are "compelling but incorrect perceptions." What makes them both compelling and incorrect?
6			Describe George Stratton's 1896 experiment with a special pair of eyeglasses. What can be learned from his experience?