Six-year-old Scotty comes running in the door and yells triumphantly to his mother, "Today is my lucky day; I found a four-leaf clover!" Many superstitions, like this one, likely began as which of the following?

A coach may offer a prize for the most-improved player of the season. This would affect learning because of

A. attentional processes. B. motor reproduction processes. C. retention processes. D. motivational processes.

How common are delusions in schizophrenia?

A. They are experienced by approximately 50 percent of schizophrenics. B. Delusions are an essential feature of schizophrenia; their presence is required for a diagnosis of schizophrenia. C. Over 90 percent of those with schizophrenia experience delusions. D. While hallucinations are a common occurrence in schizophrenia, delusions are rare.