The Nazi eugenics programs are well known. Despite their controversy, I cannot find any indication on their effectiveness. Were there ever and studies done on the (arguably subjective definition of) superiority of German genetics due to (or possibly in spite of) these programs?
Do we even have a way to objectively measure genetic superiority or fitness? In the case of a lack of such a measurement, the idea could be qualified for purposes of this question as:
- Lower instances of genetic disease.
- Lower instances of mental retardation, criminal tendencies, and mental illness.
- Higher general academic achievement.
- Healthier, longer lived population.
Note of course that I am not promoting or condoning eugenics in any way. I am only interested in knowing if the results were effective (i.e. achieved their goals), without comparing the programs' possible benefit against its obvious drawbacks. All contemporary discussion of the programs concentrate only on the drawbacks, unfortunately.
EDIT: Before anyone accuses me of bigotry or crimes against humanity, I will mention that my grandfather lost all seven of his siblings, his parents, and all the rest of his entire family to this same regime. My grandmother lost five of eight siblings, both parents, and all the rest of her entire family to this same regime. What these people did to Jews, Gypsies, and the feeble was terrible and I do not excuse it. This question is intended only to concentrate on the scientific issue of forced, deliberate genetic improvement, a form of "breeding" if you will.