The present invention relates to a device for assessing the ability of a person to carry out one or more activities, comprising an input unit for receiving physiological and/or behavioural data of the person, the physiological and/or behavioural data being related to one or more first level activities, a determination unit for determining a performance grade of the person regarding each first level activity based on the received physiological and/or behavioural data, and an assessment unit configured to assess an ability grade of the person to carry out one or more second level activities based on the determined performance grade, wherein each second level activity relates to one or more associated first level activities, wherein the assessment unit is further configured to output information indicative of the assessed ability grade.