The estimated standard deviation of the distribution of differences is used to predict the

In a study discussed in your textbook, volunteers were shown old childhood photos their parents had provided, including pictures of events like riding in a balloon. What did this study find?

A) The photos triggered repressed memories from some volunteers' childhoods. B) The volunteers could not remember any of the events that occurred before they were three years old. C) After several sessions, many volunteers could recount memories for the events in the photos, even when the photos had been digitally altered to show things that never happened to them. D) The photographs that were in color were more successful in cueing forgotten memories than the black-and-white photographs.

Hooked up to an EEG. What brain waves would you observe as the person goes from a state of calm wakefulness to the first stage of sleep?

You are watching sleep researchers monitor the sleep of a normal adult. The participant is A) Alpha eventually replaced by delta B) Delta eventually replaced by theta C) Alpha eventually replaced by theta D) Delta eventually replaced by beta