Final answer:
Psychological dependence is indicated by a client's belief that they need alcohol even after successful alcohol detoxification.
Step-by-step explanation:
After successful alcohol detoxification, a client's belief that they need alcohol primarily indicates psychological dependence. Psychological dependence is an emotional need for a drug, such as alcohol, to relieve psychological distress. Physical dependence involves changes in normal bodily functions and is characterized by withdrawal symptoms upon cessation of drug use.