What is it called when scientists in the same or similar field of study judge the quality of a fellow scientist’s scientific claim

 Peer review

Explanation:

Peer review is an act of evaluating and checking the quality the work of a scientist by another or group of expert scientist. This is done in order to check the validity and enhance the quality of the work. Thus, peer review is also used in accessing the importance, credibility and originality of scientific work.

it´s related to his charming character.

beauty is not everything, although we can joke that girls only care about the physical or material aspect, the truth is that a real woman looks at more important things, besides intelligence and personality, there are other attitudes that make irresistible to men who are 'unattractive'.

for example develop your sense of humor.