Todd's fraternal twin brother is schizophrenic. The odds are ______ percent that he, too, will be schizophrenic

Comparing people from different birth cohorts at the same time is which kind of study?

a. Retrospective b. Introspective c. Cross-sectional d. Longitudinal

Sally has just gotten her hair trimmed, and even though it doesn't look very different than before, she is sure everyone in homeroom will notice a big change and be focusing on her hair all day. This is an example of

a. imaginary audience. b. personal fable. c. hypothetical-deductive reasoning. d. relativistic thinking.