Provided is a method for screening drugs that control emotions (for example preventative or treatment drugs for psychiatric disorders), or aromas that have relaxing effects. A method for screening drugs that control emotions (for example preventative or treatment drugs for psychiatric disorders), or aromas, the method being characterised by comprising: (a) a step for administering a test substance to a test animal or exposing the test animal to the test substance; (b) a step for exposing the test animal to a substance that induces innate fear such as 2-methyl-2-thiazoline or 2, 5-dimethyl-2-thiazoline; (c) a step for measuring at least one value selected from the freezing time, body surface temperature, internal body temperature, and heart rate of the test animal; and (d) a step for selecting a test substance that alters the freezing time, that adjusts a reduction in body surface temperature, that adjusts a reduction in internal body temperature, or that that adjusts a reduction in the heart rate.
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