In the Ponzo Illusion, Two Horizontal Lines of Equal Length

question 61

Multiple Choice

In the Ponzo illusion, two horizontal lines of equal length are superimposed on radiating lines. Due to the presence of the radiating lines, the top horizontal line looks longer than the bottom one. What happens when hypnotized people are told not to see the radiating lines?

• A) The top line continues to look longer.
• B) The bottom line now looks longer than the top.
• C) They report that the two lines look equal in length.
• D) The horizontal lines disappear along with the radiating lines.

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Definitions:

Signal-Detection Theory

A theory that explains how differently people respond to stimuli under different conditions, focusing on decision-making amidst uncertainty.

Sensory Stimuli

Refers to any external or internal event or factor that can be perceived by the senses and elicit a response.

Nerve Endings

The terminal parts of nerve cells that make synaptic connections with other nerve cells, muscles, or glands.

Nervous System

An extensive network of specialized cells that communicate information about an organism's environment and its own body in order to regulate its functions.