An information processing method comprises a storage step in which attribute information indicating an attribute of specific contents carried in content information is stored in correlation to the content information, a generation step in which an attribute information aggregation is generated by extracting at least part of attribute information stored through the storage step, a first decision-making step in which a decision is made as to whether or not a set of content information stored in a storage medium contains any of attribute information constituting the attribute information aggregation and a correlating step in which the set of content information and specific attribute information, judged to be contained in the set of content information among the attribute information constituting the attribute information aggregation, are set in correlation to each other.