What is a prevalent psychological effect of alcohol use?

Slurred speech is a prevalent psychological effect of alcohol use because alcohol acts as a central nervous system depressant, impairing motor functions and cognitive abilities. When consumed, alcohol lowers inhibitions and affects areas of the brain responsible for speech and coordination. As a result, individuals may find that their speech becomes less clear and more difficult to understand. This is a common symptom observed in individuals who have consumed significant amounts of alcohol, and it serves as an indicator of intoxication.

The other options reflect effects that are generally not associated with alcohol use. For instance, overconfidence can be a consequence of alcohol consumption, but it is not as immediately observable as slurred speech. Heightened sensory perception and increased mental clarity are typically contrary to the effects of alcohol, as it tends to dull senses and impair cognitive processing. Understanding these distinctions is crucial for recognizing the impact of alcohol on behavior and communication.