To determine the state of an examinee including sleepiness, a fatigue degree, and a tension degree utilizing information relating to blinking action of the eyes of the examinee.SOLUTION: An examinee state determination device (driver state determination device 10) includes: a blinking action detection unit 11 detecting an eye blinking action that the examinee (e.g., a driver during driving a vehicle) performs unconsciously； a blinking interval detection unit 12 which detects a blinking interval including information of a time from a certain blinking action to the next blinking action among a plurality of times of blinking actions performed continuously； and an examinee state determination unit 13 which determines the state of the examinee on the basis of the blinking interval detected by the blinking interval detection unit.SELECTED DRAWING: Figure 2【課題】被験者の眼のまばたき動作に係る情報を利用して、眠気、疲労度及び緊張度を含む被験者の状態を判定する。【解決手段】被験者状態判定装置（ドライバ状態判定装置１０）は、被験者（例えば、車両運転中のドライバ）が無意識に行う眼のまばたき動作を検出するまばたき動作検出部１１と、連続して行われた複数回のまばたき動作について、あるまばたき動作が行われてから次のまばたき動作が行われるまでの時間情報を含むまばたき間隔を検出するまばたき間隔検出部１２と、まばたき間隔検出部で検出されたまばたき間隔に基づいて、被験者の状態を判定する被験者状態判定部１３とを有する。【選択図】図２
