The article presents data regarding the manifestation of the intelligence quotient at teenagers in quite difficult circumstances and under the action of the emotional stress. Despite the fact, that intelligence determines either the success or the failure of a person in the society, it is not studied sufficiently. As a result of testing the teenagers, it was established that stress had a good impact on their intelligence quotients. The most notable changes of the IQ were determined for the girls, even though they are not in the VI-th cluster - outstanding capacities. For those children from the clusters with the same value, the flexibility of the intelligence’s manifestation, which is highlighted, in general, by the cognitive abilities of assimilation, examination, utilization, realization of information, the way of thinking in stressful situations varies.