An additional possible contributing factor identified by the investigation was captain Shibanov's psychological traits. It was found that the evaluation, analysis, and interpretation of certain test data by Sibir's occupational psychologist were inadequate; as a result, the psychologist may have erred in recommending the admission of Shibanov, to the A-310 conversion training course. The captain's personality traits and type of conceptual thinking may have had a profound effect on his behavior in a stressful situation, and, particularly, may have caused disorganization in the cockpit when faced with a crisis.