In its classic form, the scientific method has how many steps?

Which of the following is an example of a positive symptom of schizophrenia?

a. flat affect b. hallucinations c. social withdrawal d. lack of initiative

In a set of scores that are normally distributed,

a. many people score at the high end and just a few score at the low end. b. people are equally likely to obtain any particular score. c. people tend to score consistently when they are retested. d. few people score very high or very low and most people score near the average. e. people's scores reflect their actual ability.