The study performed a comprehensive examination of interrelationships among intelligence, motivation, and personality traits in problem solving that requires a combination of prognostic activity and following logical rules.

Objective. To determine the role of motivation, personality traits, and intelligence in predicting choice of strategies and the effectiveness of problem solving (using the Wason selection task). 

Method. Seventy-five undergraduate and graduate students from Moscow and Saint Petersburg participated in the study (age M = 21.2, SD = 2.6) and were asked to perform a problem-solving task on a computer. They also received a set of questionnaires: the Ten Item Personality Inventory (Big Five), Personal Preferences Schedule (motivation), two subtests aimed at measuring verbal crystallized intelligence (Mill-Hill and Verbal Analogies) and fluid intelligence (Three-Dimensional Rotation, Matrix Reasoning).

Results. Fluid intelligence showed a positive correlation with extraversion, while verbal intelligence showed a negative correlation with agreeableness and conscientiousness. These three personality traits were also related to problem-solving effectiveness. Fluid intelligence showed a negative correlation with guilt, while verbal intelligence showed a positive correlation with achievement motivation. Intelligence scores were not related to the success of problem solving in the Wason selection task, and neither were emotional stability and openness to experience. 

Effectiveness and the duration of decision making in different attempts to perform the task were correlated with motivation of autonomy, guilt, aggression, and, at the statistical trend level, with motivation of achievement and intraception.

Conclusion. The data largely supported the general hypothesis regarding the role of non-specific motivational tendencies in solving the Wason selection task. For this deterministic problem, we found positive correlations of decision making with motivation of autonomy and endurance, whereas negative correlations were obtained for motivation of aggression.