Answer:
Gestalt Psychology
Explanation:
According to my research, the phrase "the whole may be greater than the mere sum of its parts." is an assumption of Gestalt Psychology. Which is a modern study of perception which states exactly what was written in quotes above. Psychologists that study this believe that the most important way of solving a problem is to see it as a whole picture.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
