HLTH 237 Chp. 5-7 Flashcards
What are the key biological theories of addiction?
- Disease/Medical Model
- Neurobiology
- Genetic Theory
- Allergy Theory
How does the disease/medical model explain addiction?
- Addiction is a chronic, fatal disease process involving changes in brain function.
- Substance use is involuntary and some individuals are biologically susceptible.
- Requires medical care and often follows a U-shaped disease progression with rehabilitation and abstinence as recovery.
What is the U-shaped disease progression described in the disease model?
- Starts with integrated or social use.
- Progresses to preoccupation, blackouts, and loss of control.
- Ends with chronic obsession, hitting rock bottom, and a choice between recovery or death.
What are the main criticisms of the disease model of addiction?
- Limited empirical support for the idea of addiction as a disease.
- Fails to fully explain substance use as a socially constructed phenomenon.
- The binary view (diseased/not diseased) oversimplifies addiction.
- Fails to address stigma and shame effectively.
What are the reasons for the popularity of the disease model?
- First model to challenge the moral model.
- Provides a simple explanation for a complex issue.
- Economic and social benefits for the medical community.
- Forms the foundation of programs like Alcoholics Anonymous.
- Avoids addressing broader social reforms.
What does the neurobiological theory suggest about addiction?
- Repeated drug exposure alters brain structures responsible for rewards, motivation, and learning.
- Changes in intracellular signaling, synaptic plasticity, and the dopamine system make stopping drug use difficult.
What role does dopamine play in addiction?
Dopamine is critical in directing and rewarding goal-related behavior. Drugs increase dopamine activity, reinforcing substance use and creating dependence.
What are the criticisms of neurobiological theories?
- Reduces addiction to a purely biological process, ignoring psychological and social factors.
- Similar brain adaptations occur with other environmental stimuli, not just drugs.
- It’s essentially a rebranding of the disease model.
What does the genetic theory propose about addiction?
- Addiction is partially inherited, with genes influencing the metabolism and processing of substances like alcohol.
- Evidence from adoption and twin studies shows familial patterns of addiction.
- Genetic influence ranges from 30–70% depending on substance, gender, and culture
What evidence supports the genetic theory of addiction?
- Adopted children are more likely to develop dependence if their biological relatives were dependent.
- Twin studies show higher concordance rates for addiction among identical twins.
What are the limitations of genetic theories of addiction?
- No “addiction gene” has been discovered.
- Genetics are not fully deterministic and do not explain all cases.
- Ignores psychological, social, and environmental influences.
- Offers no direct treatment options based solely on genetics.
What does the allergy theory suggest about addiction?
- Addiction arises from allergic reactions to substances, leading to loss of control.
- It was influential in early Alcoholics Anonymous (AA) literature.
- However, no specific mechanisms or pathways have been identified, and the theory lacks scientific evidence.
How do biological theories fit within the broader framework of addiction?
Biological factors provide predispositions to addiction but must be understood in conjunction with psychological and sociological explanations.
What is the role of neuroplasticity in addiction?
Neuroplasticity refers to the brain’s ability to adapt to repeated drug use, altering both structure and function, which reinforces addictive behaviors and makes cessation difficult.
How does the biopsychosocial model integrate biological theories?
Biological factors (e.g., genetics, neurobiology) are combined with psychological (e.g., trauma, coping mechanisms) and social (e.g., environment, relationships) factors to create a comprehensive understanding of addiction.
What are the key psychological theories of addiction?
- Learning Theory
- Personality Theory
- Psychodynamic Theory
- Humanistic Theory
- Attachment Theory
- Rational Theory
What does personality theory suggest about addiction?
- Addiction is linked to traits like impulsivity, reward-seeking, emotional instability, and low frustration tolerance.
- There is no definitive “addictive personality,” but certain traits (e.g., narcissism, nonconformity) may increase susceptibility.
How does learning theory explain addiction?
- Addiction is driven by operant conditioning.
- Positive Reinforcement: Reward increases likelihood of drug use.
- Negative Reinforcement: Withdrawal symptoms decrease with continued use.
- Over time, positive reinforcement diminishes due to habituation and extinction.
What are the main criticisms of personality theory in addiction?
- nconsistent patterns linking personality traits to addiction.
- Unclear whether traits cause addiction or result from it.
- Personality factors explain only a small proportion of addiction cases.
How does humanistic theory explain addiction?
- Addiction arises from unmet needs in Maslow’s hierarchy (e.g., safety, belonging, self-esteem).
- Drug use becomes a response to frustration, boredom, or an inability to reach potential.
- Dependency is viewed as a rational response to unresolved needs.
What does attachment theory suggest about addiction?
- Addiction stems from insecure attachments in childhood, such as neglect or inconsistent caregiving.
- Substance use replaces interpersonal relationships and helps regulate emotions in individuals with attachment disorders.