Imagine a society, which strongly disapproves of divorce. It is not illegal, but it is considered as a very bad, transgressive and immoral thing. Due to the activist pressure from certain well-organized groups, a National Psychiatric Association introduces to its diagnostic manual of mental disorders a new category Divorce Tendency Disorder (DTD). You suffer from the DTD if you have divorced more than once. DTD is further divided into subtypes: (1) divorce on your own initiative, (2) divorce on your spouse’s initiative, (3) mixed type and (4) not otherwise specified. The creation of this diagnostic category stimulates a lot of scientific research. National Institute of Health and Prevention invests large sums of money into epidemiological and biological research. It turns out that DTD may be comorbid with a Personality Disorder, a Suicidal Behavior Disorder or Drug and Alcohol Dependence. Genetic-epidemiological studies show that DTD runs in families and twin data indicate genetic and earlyenvironmental effect. A genetic consortium using large sample studies shows that DTD is massively polygenic.