The lifetime prevalence rate of schizophrenia is 1%, suggesting that
a. a member of the general population has a 1 in 100 chance of developing this disorder in his/her lifetime.
b. a member of the general population has a 1 in 100 chance of developing this disorder in the next 12 months.
c. if a member of the population is diagnosed with schizophrenia, he/she has a 1 in 100 chance of retaining the diagnosis for the remainder of his/her lifetime.
d. currently, 1 of every 100 members of the general population has this disorder.
A
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a. ?psychosexual stages b. adequacy of the defense mechanisms c. ?efficacy of the ego d. ?reality principle e. ?resolution of the phallic stage
The main danger of postnatal lead exposure is
a. mutation. b. cognitive impairment. c. respiratory failure. d. sensory levels (e.g., deafness or blindness).
Piaget refers to the process of combining existing schemas into new and more complex ones as
a. centration. b. transitivity. c. guided participation. d. organization.
Let's assume you are conducting an experiment to determine the effect of a new drug on the incidence of epileptic seizures. You select 20 epileptics from the 150 epileptics being treated at a nearby hospital and administer the drug to them. You record the number of seizures in each of the 20 subjects for one month. The 150 epileptics constitute _________
a. the dependent variable c. a statistic b. a parameter d. the independent variable