Presenting a content item and a question from an inquirer to a group of users in a first feedback session with a requirement for the users to provide predictions of how a member of a distinct target group will respond to the content item in the future, receiving, during the first feedback session, the first group's prediction of the target group's future responses, presenting, during a second feedback session, the same content item and the same question to the target group with a requirement for the target group to provide responses directed to their own responses, constructing a predictive model of the target group based on responses received from the target group during the second feedback session, measuring accuracy of the first group's prediction using the target group predictive model, and providing inquirer access to the predictive model of the target group and the most accurate prediction.