Genetic Explanation of Addiction

Question 1

Explain the genetic explanation of addiction

Answer 1

• Monozygotic twins share 100% genes
• Dizygotic twins share 50% genes
• Adopted children who have parents addicted to alcohol are more likely to be addicted to alcohol.
• There are also environmental influences that cause addiction
• Genetic variations (DRD2) can make people more likely to have addiction

Question 2

Strengths of the theory

Answer 2

• Scientific evidence to support genetic explanation
• Explains why only some people are prone to developing addiction

Question 3

Weaknesses of the theory

Answer 3

• Reductionist and does not take into account social factors
• No specific gene that causes addiction
• Gene that has been linked to addiction has also been linked to autism