Back to quiz

6. What was their mean age?

  • 19
  • 30
  • 23
  • 45

7. What was the percentage of participants who obtained income from illegal sources at the beginning, then at the end of the study?

  • 63% to 10%
  • 82% to 16%
  • 56% to 12%
  • 40% to 5%

8. 147 participants had...

  • reduced their cocaine use
  • doubled their cocaine use

9. Cocaine use had a positive relationship with what factor?

  • Contact with the drug scene
  • If their father was present in their life
  • Poverty

10. The number of non users had...

  • Not changed
  • Trebled
  • Doubled

11. Of 261 participants, 99 had...

  • greatly increased cocaine use at the end
  • the same pattern of cocaine use at the end as at the start
  • greatly reduced cocaine use at the end

12. How many times were the participants interviewed during the study?

  • 18
  • 3
  • 10
  • 5

13. Roughly how much time was between each urine test

  • 2 months
  • 3 months
  • 2 weeks
  • 6 days

14. What was one of the behavioural rules?

  • Do not drink any alcohol
  • Do not sell the prescribed drugs
  • Take daily urine tests

15. 15 participants had...

  • doubled their cocaine usage
  • started using cocaine or increased usage
  • stopped using cocaine altogether

16. By the end of the study, the number of addicts using cocaine on a daily basis had dropped by more than ...

  • 80%
  • 56%
  • 72%
  • 12%

17. Factor most associated with cocaine use was ...

  • alcohol intake
  • contact with the drug scene
  • poverty

18. Addicts had to conform to behavioural rules in order for heroin to be prescribed

  • True
  • False

19. The addicts became more truthful about their cocaine use over the course of the study

  • True
  • False

20. Did participants continue to live and work in their natural environment during the study?

  • Yes
  • No