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Aim of the study. The first goal of the study is to determine the relationship of the cognitive style "rigidity-flexibility of cognitive control" with the level indicators of intelligence. The second goal of this study is to identify possible relationships between "rigidity-flexibility of cognitive control" and the properties of temperament. Materials and Methods. In this work the authors used the Wechsler Adult Intelligence Scale (WAIS), the Stroop color–word-interference task, the Questionnaire of the formal-dynamic properties of individuality (QFDPI, designed by Rusalov V.M.), and 15 heuristic tasks, 5 tasks each in figurative, logical and figurative-logical form (designed by Kulyutkin Y.N., KrutetskiyV.A., Smallian R.). Results. The general success of solving heuristic tasks is determined by a complex of factors, which includes indicators of the flexibility of thinking, intelligence and “intellectual” temperamental properties. The flexibility of thinking is correlated with the level characteristics of intelligence in such a way that high levels of verbal, non-verbal and general intelligence correspond to the flexibility of cognitive control, low values of indicators of intelligence correspond to the pole of rigidity of this cognitive style; intellectually developed subjects are more flexible. Conclusions. The cognitive style of “rigidity-flexibility of cognitive control” can be considered as a meta-ability. This cognitive style correlates with indicators of temperament and intelligence, and to a certain extent determines the success of solving heuristic tasks.

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A b s t r a c tAim of the study: The authors attempt to determine the relationship between flexibility of cognitive control and features of the nervous system in the context of two human signal systems. Material and methods:The authors used the Stroop test, the method of determining the balance of the first and the second signal systems in the context of visual memory, and two heuristic tasks: the verbal task "Swahili" and the visual-figurative task "Observer in the square". Results: There were no direct correlations between flexible cognitive control and the first/second signal systems, or their balance. However, an important connection between the second signal system and the predominance of the verbal (semantic-conceptual) method of processing information. The results of the correlation analysis have proven the existence of a link between flexible cognitive control and successful solutions of heuristic tasks. In the group of "Rigid" subjects, the successful solution of tasks is associated with a dominant manner of the processing of the information, and the presentation of a particular task. Conclusions:The results obtained demonstrate a link between flexible cognitive control and successful solutions of heuristic tasks. They also point to a relationship between solving visual-figurative tasks and sensory-perceptual (perceptual-motor) methods of processing information. There were no direct correlations between flexible cognitive control and the first/second signal systems or their balance.