Abstract: Methods and kits for assessing severity index for alcohol abuse, drug abuse, and other reward deficiency syndromes. It has been discovered that a multifaceted non-specific RDS behaviors should be considered as the true “reward” phenotype (endophenotype) instead of a single subset RDS behavior such as alcoholism. In an embodiment of the present invention, it has been discovered that there are at least eleven risk alleles associated with ten candidate genes. The methods and kits of the present invention satisfy the need to classify patients at genetic risk for drug/alcohol seeking behavior prior to or upon entry to residential and or non-residential chemical dependency and pain programs.