Which of the following is not a symptom of addiction?

Improved focus is not recognized as a symptom of addiction. Instead, it is often associated with the use of certain substances or behaviors that may enhance concentration or productivity temporarily. In contrast, craving, loss of control, and withdrawal symptoms are hallmark signs of addiction.

Craving refers to the intense desire to seek or use a substance, which can be a driving factor in continuing addictive behavior despite negative consequences. Loss of control exemplifies the inability to regulate the consumption of a substance or engagement in a behavior, often leading to excessive use. Withdrawal symptoms occur when an individual reduces or stops the addictive substance, resulting in physical or emotional discomfort, further illustrating the dependence that characterizes addiction. Therefore, improved focus distinguishes itself as a concept unrelated to the detrimental psychological and physical impacts of addiction.