The present invention relates to a device, system and method for assessing the information needs of a person. The device comprises an input interface (130) for receiving speech content information of the person, an image data interface (131) for receiving image data of the person depicting the person during said speech, a physiological data interface (132) for receiving physiological data of the person obtained during said speech, a data analyzer (133) for analyzing the received speech content information, image data and physiological data and for deriving a topic of the speech from the received speech content information, for deriving one or more vital signs and reactions of the person from the received image data and for deriving emotions of the person from the received physiological data, an information needs determining unit (134) for determining information needs of the person from the topic of speech, one or more vital signs, reactions and emotions of the person derived by the data analyzer, and an output interface (135) for outputting the determined information needs of the person.