When Pedro is with his girlfriend, he is capable of becoming stimulated but, inevitably, he begins to question whether he will perform up to her standards and immediately loses his ability to maintain his erection. What is Pedro experiencing?

Performance anxiety                                

Explanation:

Performance anxiety is described as a situation in which an individual feels negative thoughts related to one's capability of performing well while doing sexual activity. An individual who is experiencing performance anxiety generally feels incapability of pleasing his partner or sexual inadequacy. Feelings of performance anxiety might get influenced by a male's penis size, body image, or through perception related to a man's role or manliness.

As per the question, Pedro is experiencing 'performance anxiety'.

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.

its a hope it good luck