Schaie (1993), found in a longitudinal study that the majority of the participants in the study showed no significant decline in most mental abilities until the age of:

Which type of psychologist is most likely to believe that the conscious mind is a natural process occurring in the nerve cells of the brain that can be studied through objective scientific inquiry?

a. humanistic psychologists b. behavioral geneticists c. cognitive neuroscientists d. experiential psychologists e. clinical psychologists

A __________ represents a developmental design in which different age groups are assessed at

the same time of measurement. Fill in the blanks with correct word