Concordance rates among identical twins for bipolar disorder are commonly reported to be ____

Who is most likely to find a new partner after being widowed?

A) men B) women C) neither sex D) either sex

Statisticians will often describe how extreme performances,

both good and bad, tend to be followed by more average levels of performance. This _____ might be one explanation for why many psychotherapy patients improve regardless of the type of therapy received. A) placebo effect B) regression to the mean C) retrospective rewriting D) self-serving bias