Those we look to for guidance on what to do and how well we do it are known as a(n)

Recently, researchers have studied an alternative to ECT that uses repeated pulses of magnetic stimulation. This therapy is

a. not effective. b. rTMS. c. the PET scan. d. a placebo.

The chance that a male who has an identical twin who is schizophrenic will himself

be or will become schizophrenic is expressed as a percentage. This percentage is called a (a) group difference index (b) concordance rate (c) circadian index (d) genetic index