The winner? Washington in a walk. “The District of Columbia is measured to be far more psychopathic than any individual state in the country,” Murphy writes in the paper. “The presence of psychopaths in the District of Columbia is consistent with the conjecture . that psychopaths are likely to be effective in the political sphere,” Murphy writes in the paper. “The way we design our political institutions,” Murphy wrote in an email, “should reflect the fact that psychopaths are more likely to be effective politicians.