1. A computer-implemented method of evaluating information confidence based on cognitive behavior indicators of a user, the method comprising: receiving, by a processor, information from a user as an answer to a question in an active learning question and answer system; monitoring, by the processor, the user for one or more cognitive behavior indicators when the user is providing the information, wherein the one or more cognitive behavior indicators comprise one or more biometric measurements of the user at a time the information is provided by the user and measures of an influence of an external stimuli on the user at the time the information is provided by the user; determining, by the processor, a quantified level of information confidence for the information received from the user based on the one or more biometric measurements of the user and the measures of the influence of an external stimuli on the user; and annotating, by the processor, the information with the cognitive behavior indicators, a user profile associated with the user, and the quantified level of information confidence.