AbstractIntense effort is directed toward searching for associations between genes and neuropsychological measures of executive functions. In contrast, the impact of genetic polymorphisms on self-rating of everyday executive functioning has not been investigated so far. This study was designed to test associations of self-reported executive functioning, measured with the Behavior Rating Inventory of Executive Function (BRIEF-A), with dopaminergic and serotoninergic genes in non-clinical population and to assess impact of neuropsychological and personality characteristics on these associations. One hundred healthy adults completed the BRIEF-A, personality inventories SPQ-74, STAI, MMPI, and neuropsychological tests for executive functions. Polymorphisms in theDRD4, COMT, DRD2, HTR2A, andSLC6A4genes were genotyped. We revealed a significant main effect of theSLC6A4’s 5-HTTLPR polymorphism on BRIEF-A scores (F= 2.21,P= .018, η2= .24). Among the BRIEF-A measures, the genotype effect was significant for the Plan/Organize (F= 7.34,P= .008, η2= .07) and Task Monitor scales (F= 4.33,P= .04, η2= .04), and the Metacognition index (F= 4.21,P= .043, η2= .04). Carriers of the short allele reported fewer problems than homozygotes for the long allele. Correlations of the BRIEF-A measures with neuropsychological variables were weak, while those with personality characteristics were strong, with trait anxiety being the most powerful predictor of the BRIEF-A scores. However, the relationship between the 5-HTTLPR and BRIEF-A scores remained significant when trait anxiety was controlled for. The results suggest a potential role of the 5-HTTLPR in self-reported everyday task planning and monitoring.