Comparative Effect of Restraint (Emotional) Hypothermia on Common Laboratory Animals

tion; (b) door opened to an empty reward box: intermediate extinction rate, but somewhat slower than under condition a; (c) door opened to a reward box containing a familiar male cagemate: very rapid extinction; (d) door opened to a reward box containing a resistant female: slow and insignificant extinction. Analysis of covariance showed significant differences between these extinction conditions.