The most recognized test for alcohol screening that has been used since 1971 is:

The most recognized test for alcohol screening that has been used since 1971 is the MAST (Michigan Alcohol Screening Test). This screening tool was developed to identify individuals who have alcohol-related problems and is notable for its effectiveness in both clinical and research settings.

MAST is comprised of a series of questions that assess an individual's alcohol use and the consequences of that use. Because it focuses on various aspects of behavior and health related to alcohol consumption, it provides valuable insight into the degree of potential alcoholism and related issues. Its long-standing presence in the field has established it as a reliable and valid measure for screening individuals for drinking problems.

Given its historical significance and widespread use in assessing alcohol dependency, MAST is the correct answer in this context, highlighting its role as a foundational tool in alcohol screening. Other tools, such as CAGE, SASSI, and ASAM, may also be useful in specific contexts, but MAST's longevity and recognition as one of the primary instruments in this area make it the standout choice.