Subjects sleep is determined based on their working style.The sleep discriminator 1 has an operation unit 1a. The operation part 1a divides the period P1 into the sleep intervals SA, Sb and the active intervals AA and ab using the data DA and DB of the activity amount obtained based on the time series data relating to the active state of the subject T1 in the period P1.Then, the operation unit 1A discriminates any of a plurality of types relating to the working form as the types Ka and KB of the sleep intervals SA and Sb based on the existence state of the divided sleep sections SA and Sb and the active sections AA and AB in the specific period P2.Diagram【課題】対象者の睡眠をその勤務形態を踏まえて判別する。【解決手段】睡眠判別装置1は、演算部1aを有する。演算部1aは、期間P1の対象者T1の活動状態に関する時系列データに基づいて得られる活動量のデータDa,Dbを用い、期間P1を、睡眠区間Sa,Sbと活動区間Aa,Abに区分する。そして、演算部1aは、区分した睡眠区間Sa,Sbと活動区間Aa,Abの、特定の期間P2での存在状況に基づき、勤務形態に係る複数の種別のうちのいずれかを、睡眠区間Sa,Sbの種別Ka,Kbとして判別する。【選択図】図1
