Between 1990 and 1998 he was the 2nd highest cited psychiatrist, and for the 1997–2007 decade he was ranked 4th by Thomson Reuters' Science Watch.

[4] Kendler's group was also noted for the replication of a study of Avshalom Caspi on the interaction of stressful life events and a serotonin transporter polymorphism in the prediction of episodes of major depression.

[5] Kendler is a Banks Distinguished Professor of Psychiatry, Professor of Human Genetics, and Director of the Virginia Institute of Psychiatric and Behavioral Genetics at the Virginia Commonwealth University.

[9] During World War II, Rüdin was a member of the Nazi Germany Expert Committee on Questions of Population and Racial Policy who vociferously advocated the extermination of individuals with schizophrenia.

[10] However, Kendler's articles on Rüdin have faced criticism for whitewashing his racist and later Nazi ideologies and activities.