Melanie has just received an exam grade in her psychology class. she earned a grade of 89 percent, which is a all of her work during the semester thus far has earned a grades, and she is very upset about the exam score. "this is the worst thing that could possibly have happened," she laments to her best friend, keesha, who just rolls her eyes. a cognitive psychologist would suggest that melanie is employing the cognitive distortion called

Magnification.

Explanation:

Magnification, as the name suggests, is the tendency to make problems bigger than they actually are. In magnification the individual, in this case Melanie, make a problem out of something tiny (such as an 89 percent in an exam which is a great score regardless) but won't see the great accomplishment of having all "A" grades during the semester (which would be called minimization).

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

explanation:

may i ask what challenges?