[Problem] To make it possible to easily grasp the state of an observation subject from accumulated observation results regarding the observation subject. [Solution] An information processing device according to an embodiment of the present invention is provided with a first storage unit, a second storage unit, a data processing unit, and an output unit. The first storage unit stores correspondence data in which a plurality of states that relate to the mind and body are associated with keywords that are related to each of the states. The second storage unit stores a message group that represents content spoken by a plurality of speakers regarding the observation subject. The data processing unit specifies a keyword that relates to a state that is present in the message group and generates presentation information in which information data that includes the specified keyword is associated with the state and arranged for each message that includes the specified keyword.
INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD