Classification of MAOA activity was assigned to each allele resulting from previous work in the efficiency of transcription activity of the MAOA gene promoter as low activity for the 3- and 5-repeat alleles and high activity for the 3.5- and 4-repeat alleles (Sabol et al. 1998). Products were analyzed using an SCE-9610 capillary sequencer (Spectrumedix, State College, PA, USA), ROX-labeled GX-500 size standard and Genospectrum v. 2.6 DNA fragment analysis software (SpectruMedix).
