Psychogenomics is the genomics branch where psychological phenotypes are mapped to genotypes and genotypic variations such as SNPs and CNVs. Psychological and behavioral phenotypes are difficult to quantify. By using genotypes and their variations, it is possible to quantify medically and associate the genotypic elements to psychology.
A psychological and behavioral disorder such as addiction can be traced to a set of genes and proteins. By applying next generation sequencers(NGS), researchers can map psychological features to genetic elements.