Abstract: The article is devoted to a survey of managers in the educational sphere that was conducted, in which about 100 heads of higher education institutions in Ukraine took part, regarding their tendency to use their own judgments during the managerial decisionmaking process, which can be the cause of cognitive biases. Also reviewed scientific works on the relevant topic. Cognitive biases are errors of human perception and this category is directly related to the decision-making process. In the course of the study, certain correlations were revealed between the age and gender of managers and their tendency toward cognitive biases. The tendency toward such human aspects as emotions, intuition, and experience during managerial decision-making is considered. It was found that managers are least inclined to take emotional actions during decision-making and most inclined to use their own experience. The following cognitive biases are considered in detail: the Dunning-Kruger effect, survivorship bias, and confirmation bias. All managers interviewed are prone to certain cognitive biases. Men are more likely to overestimate their own skills, act on emotions, use intuition, listen to the opinions of authoritative people, and care about the opinions of others when making managerial decisions than women, who at the same time are more inclined to underestimate their own skills. Managers aged 65 and over are more prone to cognitive biases than others. All respondents of any age and gender tend to use their own experience when making managerial decisions. The impact of cognitive biases on the quality of managerial decisions and their possible impact on the organization have been confirmed.