Cognitive learning
Group I (the green solid line) found food at the end of each trial; group II (the blue dashed line) did not find food for the first 6 days; and group III (the red dotted line) did not find food during runs on the first three days. Notice that rats given food earlier learned faster and eventually caught up to the control group. The orange dots on the group II and III lines show the days when food rewards were added to the mazes.
Source
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"OpenStax College, Behavioral Biology: Proximate and Ultimate Causes of Behavior. October 17, 2013."
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OpenStax CNX
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