Joffrey talks and moves slowly. when asked a question, he answers slowly in monotone monosyllables, if he answers at all. joffrey is experiencing

The answer is: Retarrdation

Retarrdation happens because the brain could not develop properly. This condition could happen since birth and the factors that influenced it are varied (could be both genetic or environmental) . The underdevelopment on the brain causes the victim unable to conduct several conscious actions like normal people do

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.