2. The computer program product of claim 1 , wherein a first combined cognitive state is associated with a first subgroup of participants, and wherein the method further comprises: identifying a transition from the first combined cognitive state to a second combined cognitive state for the first subgroup of participants based on a divergence of the cognitive states of the participants of the first subgroup during the meeting; automatically generating an advice based on the transition; and providing the advice to at least one of the participants in order to influence a course of the meeting.
5. The computer program product of claim 2 , wherein the at least one participant includes a teacher and the first subgroup includes students learning from the teacher in the meeting, wherein the advice includes a suggestion for a change in lesson plans of the teacher based on the transitions in the combined cognitive state of the students.