PROBLEM TO BE SOLVED: To provide a technique for determining a cooled state of a subject.SOLUTION: A technique for determining a cooled state of a subject determines the cooled state of the body of the subject from an activity factor of the automatic nerve of the subject or a substitute value thereof on the basis of a correlation between the activity factor of the automatic nerve or the substitute value thereof and the cooled state.COPYRIGHT: (C)2014,JPO&INPIT【課題】対象者の冷え状態を判別する技術を提供することを課題とする。【解決手段】自律神経活動度又はその代替値と、冷え状態との相関関係に基づいて、対象者の自律神経活動度又はその代替値から、対象者の身体の冷え状態を判別する。【選択図】図14