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					Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Chapter 11 Substance-Related and Impulse-Control Disorders Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Perspectives on Substance-Related Disorders: An Overview  The Nature of Substance-Related Disorders  Use and abuse of psychoactive substances  Wide-ranging psychophysiological and behavioral effects  Associated with significant impairment and costs  Some Important Terms and Distinctions  Substance use vs. substance intoxication  Substance abuse vs. substance dependence  Tolerance vs. withdrawal Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Perspectives on Substance-Related Disorders: An Overview (cont.)  Five Main Categories of Substances  Depressants – Result in behavioral sedation  Stimulants – Increase alertness and elevate mood  Opiates – Primarily produce analgesia and euphoria  Hallucinogens – Alter sensory perception  Other drugs of abuse – Include inhalants, anabolic steroids, medications Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders The Depressants: Alcohol Use Disorders  Psychological and Physiological Effects of Alcohol  Central Nervous system depressant  Affects several neurotransmitter systems  Specific target is GABA  Effects of Chronic Alcohol Use  Alcohol intoxication & withdrawal  Associated conditions – Dementia & Wernicke’s disease  Fetal alcohol syndrome  DSM-IV-TR Criteria for Disordered Alcohol Use Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Alcohol: Some Facts and Statistics  In the United States  Most adults view themselves light drinkers or abstainers  Over 50% of the U.S. (> 12 years age) report current use  15 million Americans are alcohol dependent  Rates are highest among Caucasian & Native Americans  Males use and abuse alcohol more than females  Violence is associated with alcohol  Alcohol alone does not cause aggression Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Sedative, Hypnotic, or Anxiolytic Substance use Disorders: An Overview  The Nature of Drugs in This Class  Sedatives – Calming (e.g., barbiturates)  Hypnotic – Sleep inducing  Anxiolytic – Anxiety reducing (e.g., benzodiazepines)  Effects Are Similar to Large Doses of Alcohol  Combining such drugs with alcohol is synergistic  All Influence the GABA Neurotransmitter System  DSM-IV-TR Criteria for this Class of Disorders  Main criteria and distinguishing features Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Stimulants: An Overview  Nature of Stimulants  Most widely consumed drug in the United States  Such drugs increase alertness and increase energy  Examples include amphetamines, cocaine, nicotine, and caffeine Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Stimulants: Amphetamine Use Disorders  Effects of Amphetamines  Produce elation, vigor, reduce fatigue  Effects are followed by extreme fatigue and depression  DSM-IV-TR Criteria for Amphetamine Intoxication  Ecstasy and Ice  Produces effects similar to speed, but no “comedown”  2% of college students report using Ecstasy  Both drugs can result in dependence  Amphetamines stimulate CNS by  Enhancing release of norepinephrine and dopamine  Reuptake is subsequently blocked Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Stimulants: Cocaine Use Disorders  Effects of Cocaine  Short lived sensations of elation, vigor, reduce fatigue  Blocks reuptake of dopamine  Highly addictive, but addiction develops slowly  DSM-IV-TR Criteria for Cocaine Intoxication and Withdrawal  Psychological symptoms  Physiological symptoms  Most Cycle Through Patterns of Tolerance and Withdrawal Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Stimulants: Nicotine Use Disorders  Effects of Nicotine  Stimulates nicotinic acetylcholine receptors  Results in sensations of relaxation, wellness, pleasure  Nicotine is highly addictive  Relapse rates equal those for alcohol and heroin users  DSM-IV-TR Criteria for Nicotine Withdrawal Only  Psychological symptoms  Physiological symptoms  Nicotine Users Dose Themselves  Maintain a steady level of nicotine in the Bloodstream  Examples include smoking before sleep or after waking Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Stimulants: Caffeine Use Disorders  Effects of Caffeine – The “Gentle” Stimulant  Found in tea, coffee, cola drinks, and cocoa products  Blocks the reuptake of the neurotransmitter adenosine  Small doses elevate mood and reduce fatigue  Used by over 90% of Americans  Regular use can result in tolerance and dependence  DSM-IV-TR Criteria for Caffeine Intoxication  Psychological symptoms  Physiological symptoms Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Opioids: An Overview  The Nature of Opiates and Opioids  Opiate – Narcotic like chemical in the opium poppy  Opioids – Substances that produce narcotic effects  Often referred to as analgesics (i.e., help relieve pain)  Examples include heroin, opium, codeine, and morphine  Effects of Opioids  Activate body’s enkephalins and endorphins  Low doses – Euphoria, drowsiness, and slow breathing  High doses can be fatal  Withdrawal symptoms can be lasting and severe Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Opioids: Diagnostic Criteria and Associated Features  DSM-IV-TR Criteria for Opioid Intoxication and Withdrawal  Psychological symptoms  Physiological symptoms  Mortality rates are high for opioid addicts  Users at increased risk for HIV infection Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Hallucinogens: An Overview  Nature of Hallucinogens  Substances that alter perceptions of the world  Produce delusions, paranoia, hallucinations, and/or altered sensory perception  Examples include marijuana, LSD  Marijuana  Active chemical is tetrahydrocannabinol (THC)  Symptoms – Mood swings, paranoia, hallucinations  Impairment in motivation is not uncommon  Withdrawal and dependence are uncommon Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Hallucinogens: An Overview (cont.)  LSD and Other Hallucinogens  LSD is most common form of hallucinogenic drug  Tolerance tends to be rapid  Withdrawal symptoms are uncommon  Can produce psychotic delusions & hallucinations  DSM-IV-TR Criteria  Marijuana and Hallucinogen Intoxication  Psychological and physiological symptoms are similar Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Other Drugs of Abuse: Inhalants  Nature of Inhalants  Found in volatile solvents  Breathed into the lungs directly  Examples include spray paint, hair spray, paint thinner, gasoline, nitrous oxide  Such drugs are rapidly absorbed  Effects similar to alcohol intoxication  Produce tolerance and prolonged withdrawal symptoms  DSM-IV-TR Criteria for Inhalant Intoxication Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Other Drugs of Abuse: Anabolic Steroids  Nature of Anabolic-Androgenic Steroids  Steroids are derived or synthesized from testosterone  Used medicinally or to increase body mass  Users may engage in cycling or stacking  Steroids do not produce a high  Long-term mood disturbances and physical problems Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Other Drugs of Abuse: Designer Drugs  Designer Drugs  Drugs produced by pharmaceutical companies for diseases  Ecstasy, MDEA (“eve”), BDMPEA (“nexus”), ketamine (“special K”) are examples  All heighten auditory and visual perception (taste and touch)  Popular in nightclubs, raves, or large social gatherings  All designer drugs can produce tolerance and dependence Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Causes of Substance-Related Disorders: Family and Genetic Influences  Results of Family, Twin, and Adoption Studies  Substance abuse has a genetic component  Much of the focus has been on alcoholism  Genetic differences in alcohol metabolism  Multiple genes are involved in substance abuse Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Causes of Substance-Related Disorders: Neurobiological Influences  Results of Neurobiological Research  Drugs affect the pleasure or reward centers in the brain  The pleasure center – Dopamine, midbrain, frontal cortex  GABA turns off reward-pleasure system  Inhibition of neurotransmitters for anxiety / negative affect Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Causes of Substance-Related Disorders: Psychological Dimensions  Role of Positive and Negative Reinforcement  The self-medication and the tension reduction hypotheses  Substance abuse as a means to cope with negative affect  Opponent-Process Theory  Why the crash after drug use fails to stop drug use  Role of Expectancy Effects  Expectancies influence drug use and relapse Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Causes of Substance-Related Disorders: Social and Cultural Dimensions  Exposure to Drugs is a Prerequisite for Use of Drugs  Media, family, peers  Parents and the family appear critical  Societal Views About Drug Abuse  Sign of moral weakness – Failure of self-control  Sign of a disease – Caused by underlying processes  The Role of Cultural Factors  Influence the manifestation of substance abuse Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders An Integrative Model of Substance-Related Disorders  Exposure or Access to a Drug  Is necessary, but not sufficient for abuse and addiction  Drug Use Depends on Social and Cultural Expectations  Drugs Are Used Because of their Pleasurable Effects  Drugs Are Abused for Reasons that are More Complex  The premise of equifinality  Stress may interact with psychological, genetic, social, and learning factors Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Figure 11.11 An integrative model of substance-related disorders. Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Biological Treatment of Substance-Related Disorders  Agonist Substitution  Substitute safer drug with a similar chemical composition  Examples include methadone and nicotine gum or patch  Antagonistic Treatment  Drugs that block or counteract pleasurable drug effects  Examples include naltrexone for opiate and alcohol problems Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Biological Treatment of Substance-Related Disorders (cont.)  Aversive Treatment  Drugs that make use of drugs extremely unpleasant  Examples include Antabuse for alcoholism and silver nitrate for nicotine addiction  Efficacy of Biological Treatment  Generally ineffective when used alone Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Psychosocial Treatment of Substance-Related Disorders  Inpatient vs. Outpatient Care  Overall efficacy is comparable  Controlled Use vs. Complete Abstinence as Treatment Goals  Community Support Programs  Alcoholics Anonymous and related groups  Seem helpful and are strongly encouraged Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Psychosocial Treatment of Substance-Related Disorders (cont.)  Comprehensive Treatment and Prevention Programs  Individual and group therapy  Aversion therapy and convert sensitization  Contingency management  Community reinforcement  Relapse prevention  Preventative efforts via education Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Summary of Substance-Related Disorders  DSM-IV and DSM-IV-TR Substance Related Disorders  Cover four classes  Depressants, stimulants, opiates, and hallucinogens  Diagnoses include dependence, abuse, intoxication, or withdrawal  Most Activate the Dopaminergic Pleasure Pathway  Psychosocial factors interact with biological influences to produce substance disorders  Treatment of Substance Dependence  Largely unsuccessful – Highly motivated persons do well  Important to use a comprehensive treatment approach Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Impulse-Control Disorders  DSM-IV-TR  Intermittent explosive disorder  Kleptomania  Pyromania  Pathological gambling  Trichotillomania  Each is Characterized by the Following  Increased tension/anxiety prior to the act  A sense of relief following the act  Impairment of social and occupational functioning Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Impulse-control Disorders (cont’d.)  Intermittent Explosive Disorder  Rare condition  Characterized by frequent aggressive outbursts  Leads to injury and/or destruction of property  Few controlled treatment studies exist  Kleptomania  Failure to resist urge to steal unnecessary items  Seems rare, but it is not well studied  Highly comorbid with mood disorders  Also co-occurs with substance-related problems Abnormal Psychology: An Integrative Approach, 4th Edition, David H. Barlow, V. Mark Durand Chapter 11: Substance-Related and Impulse-Control Disorders Impulse-control Disorders (cont’d.)  Pyromania  Involves having an irresistible urge to set fires  Diagnosed in less than 4% of arsonists  Little etiological and treatment research  Pathological Gambling  Estimated to affect 3-5% adult Americans  Treatment is similar to that for substance dependence  Treatment studies are currently underway  Trichotillomania  Inability to resist the urge to pull hair  Observed in 1-5% of college students, mostly female  Clomipramine and CBT have been shown to be helpful