The selected SNPs were either already known from earlier studies to other stress-related psychiatric disorders or tag-SNPs that were selected out of the HapMap data with the help of the programme Haploview® (Barrett et al., 2005) in order to cover NPY and NPY1R. Nonetheless, the selected SNPs are infrequent in the population, thus statistically evaluable transmissions in the sample were rather small. This evidence concerns the gene NPY and psychiatric disorder.