The diagnostic system for describing and classifying psychological disorders that is used by mental health professionals in the United States and much of the world is commonly known as the , which stands for Group of answer choices

DSM; Diagnostic and Statistical Manual

Explanation:

Diagnostic and statistical manual(DSM) is a material mostly used in the United States by health care practitioners as a guide in diagnosing of mental disorders. DSM is like a complete circke as it doesn't just describes but shows symptoms and how to go about the diagnosisling.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.