The aim of this study is to explore basketball judges’ selfishness and decision-making styles.The work group of the research based on the relational scan model is made up of 302 classman judges living in Istanbul.Melbourne decision scale i-ii (i: mkvöö: Melbourne decision scale self-righteousness -ii: Melbourne decision styles scale) , the scale of arbitrator self-quality 'höyö' and the statistical analysis of the data collected with the personal information form is done in the spss 25.0 program.In the analysis of the data, the visual statistics (medium, standard deviation, frequency, ratio) as well as the t-test for independent groups, pearson moments collapse correlation analysis, one-way variance analysis (anova) and multi-linear regression analysis were used, meaningfulness was assessed at a minimum p<0,05 level.As a result of the analysis, heyö physical capacity and mkvöö and mkvsö careful and delaying decision making style, heyö game knowledge and mkvöö and mkvsö careful, delaying and escaping decision making, heyö decision making and mkvsö careful, delaying, escaping and panic decision making, heyö pressure and mkvsö careful decision making, heyö communication and mkvsö careful, delaying, and panic decision making between mkvsö and mkvsö careful decision making, the positive, delaying and panic decision making between mkvsö and mkvsö careful decision making, the negative, delaying and panic decision making between mkvsö and mkvsö careful decision making, the negative, the negative, the negative, the negative, the negative, the negative, the negative, the negative, the negative, the negative, the negative, the negative, the negative, the negative, the negative, the negative, the negative, the negative, the negative, the negative,As a result of the research’s regression analysis, it was found that the self-righteousness in the decision-making subdimensions of the hyö pressure and communication, the knowledge of the hyö game and the decision-making subdimensions make careful decisions, the hyö decision-making dimensions make escaping, delaying and panic decisions.According to the findings, the increased self-sufficiency of judges, the increased self-sufficiency in decision making, the increased self-sufficiency of prudent decision-making styles, and the reduced delaying and panic decision-making styles, can be said.