Cognition

• Explain the following terms in psychophysics: threshold, Weber's law, and staircase. Also, explain the relationship among them.
• What is "perceptual constancy"? Define it, describe some examples, and explain why it is biologically important.
• Refute the classical view of illusory contour and surface filling-in as "knowledge-based cognitive inference, top-down in its nature." Provide empirical evidence supporting your position.

Return to regular view	Text-only	Updated: 11/16/2009