11) The DSM-IV classifies substance-related disorders into ________ major categories. A) two B) three C) four D) five 12) According to the DSM-IV, ________ disorders refer to patterns of maladaptive behaviour involving the use of psychoactive substances. A) substance use B) substance induced C) substance reaction D) psychoactive 13) According to the DSM-IV, substance abuse and substance dependence are classified as ________ disorders. A) substance use B) substance induced C) substance reaction D) psychoactive 14) According to the DSM-IV, ________ disorders refer to the many kinds of disorders that can be induced by the use of psychoactive substances, such as intoxication, dementia, or delirium. A) substance use B) substance-induced C) substance reaction D) psychoactive 15) The chemical actions of psychoactive drugs that result in a person feeling “drunk†or “high†are called ________. A) tolerance B) intoxication C) withdrawal D) potentiation 16) Almost _____ of students report a heavy pattern of drinking alcohol. A) half B) one-third C) one-quarter D) two-thirds 17) According to the DSM-IV, __________ is the key to defining substance abuse. A) the amount of drug ingested and for how long B) the type of drug ingested C) whether a pattern of drug-using behaviour becomes linked to damaging consequences D) regular consumption of moderate amounts of drugs 18) ________ is identified by a pattern of recurrent usage of a psychoactive drug that leads to damaging consequences. A) Substance use B) Substance abuse C) Substance misuse D) Substance dependence 19) The central issue in determining substance abuse is ________. A) the types of drugs a person uses B) the quantity of drugs a person uses C) the pattern of drug use in which a person engages D) usage becomes repeatedly linked to damaging consequences 20) ________ is identified by the development of physiological signs of tolerance or withdrawal or by compulsive use of a substance. A) Substance use B) Substance abuse C) Substance misuse D) Substance dependence