Which of the following is the most commonly used legal depressant, which has a propensity to addiction?

Behavior characterized by lack of desire for social relationships and lack of enjoyment in activities may indicate ________ disorder.

a. schizoaffective b. schizoid personality c. schizotypal personality d. paranoid personality

Developmental science is __________ because it has grown through the combined efforts of people from many fields of study

A) interdisciplinary B) empirical C) applied D) theoretical