The aim of this study is to examine the effects of genetic factors on the behavioral characteristics of individuals and to discuss how this information can be evaluated in the context of sports psychology. Genetic studies show that variations in individuals' neurotransmitter systems may be associated with behavioral differences. In this context, the effects of genes such as BDNF, MAO-A, COMT, DRD4 and SLC6A4 on dopaminergic and serotonergic systems are discussed, and the potential roles of these genes on psychological characteristics such as aggression, impulsivity and stress response are discussed. Psychogenetic approaches in sports are thought to be important in shaping the behavioral responses of individuals. Finally, the potential applications of genetic studies in the field of sports psychology are evaluated and information on how polymorphisms in genes change the behavioral characteristics of individuals is discussed. It is thought that the integration of genetic information into sports psychology can make a significant contribution to understanding the individual differences of athletes and optimizing their performance.