Final Answer:
The individual described exhibits signs of alcohol dependence or alcohol use disorder. These signs include the development of tolerance, difficulty stopping after the first drink, and unsuccessful attempts to quit despite promises to do so.
Step-by-step explanation:
Alcohol dependence is characterized by a range of symptoms, and the mentioned behaviors align with the diagnostic criteria. Tolerance, the need for increased amounts of alcohol to achieve the desired effect, is a key indicator. The person's difficulty in stopping after the first drink suggests a loss of control over alcohol consumption, a hallmark of alcohol use disorder. The repeated promise to quit without successful cessation indicates a struggle with maintaining abstinence, further supporting the likelihood of alcohol dependence.
Tolerance develops due to neuroadaptations in the brain, where the body becomes accustomed to the presence of alcohol. The difficulty in stopping after the first drink can be attributed to the reinforcing effects of alcohol on the brain's reward system, leading to a compulsive pattern of use. The cycle of promising to quit and failing to do so may stem from a combination of psychological dependence, habituation, and the physical cravings associated with alcohol use disorder.
In summary, the individual's experiences align with the criteria for alcohol dependence, highlighting the complex interplay of physiological and psychological factors in the development and perpetuation of problematic alcohol use. Recognizing these signs is crucial for early intervention and appropriate treatment to address the underlying issues contributing to alcohol dependence.