The words polydrug and polysubstance describe the use of synthetic drugs (as in polymer) rather than naturally occurring substances (like marijuana).

"What works best to keep suicidal people from following through?" asks a friend. Which of the following would be the correct answer to this question?

A) "There are very good drugs one could use." B) "All therapies are about equally effective." C) "Try cognitive-behavioral therapy." D) "Actually, no therapy works very well."

Thomas and Chess would describe Hilel as a ________ child, because he is frequently negative, easily frustrated, and slow to adapt to change

Fill in the blank with the appropriate word.