Answer:
d) selection-maturation effect.
Explanation:
Based on the scenario being described within the question it can be said that this could also equally reflect the selection-maturation effect. This term refers to a differential rate of normal growth that occurs between pre-test and pos-tests. Such as is the case in this scenario since the scores have increased drastically between these two stages of the testing period.
Declarative.. :) have a great day
The correct answer is Sigmund Freud. His studies on psycho-neuroses around the 20th century is considered to be the basis of psychology and psychiatry.