A doctor gives a drug to a depressed patient in the belief that the patient’s depression is caused by an abnormal amount of serotonin in the brain and that this drug will correct the abnormality. This doctor would be following the model for explaining causes of psychological disorders.

A) socio-cultural
B) biological
C) psychological
D) humanistic

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs