This figure illustrates a classical conditioning experiment, in which some rats learned to associate an electrical shock with a light, while other rats learned to associate a shock with a sound. The original is from the second edition of Introduction to Psychology by James Kalat; my reworking appeared in the third edition.

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Original illustration: indecipherable charts of squiggly lines, arrows, acronyms

Reworked figure showing rats responding to light, sound, and shocks

© 1990, 1993, 1996 Brooks/Cole Publishing Co. Displayed with the permission of Brooks/Cole Publishing Co., a division of International Thomson Publishing Inc.

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