Baltes believes that culture is significant during childhood and that biology becomes more important as adults grow older

Because of changes in gender roles in developed countries such as the U.S., gender stereotypes have disappeared.

a. true b. false

If a psychologist interested in the effects of smell on concentration has 20 participants perform a standard task while exposed to an unpleasant smell and another 20 participants perform the same task without being exposed to the unpleasant smell,

the appropriate test to analyze the data is a t test for __________. Fill in the blanks with correct word