Author:

(A) the attainment of successive stages of cognitive development
(B) relatively, stable changes in an individual’s thought and behavior or a result of biological processor of aging
(C) relatively, stable changes in an individual’s thought and behavior or a result of accumulating experience
(D) the developmental of an individual though and behavior due to the interactions of biological and environmental factors

(A) psychology is different from other science
(B) the method of psychology are based on controlled experiments and on observations made with great precision and objectivity
(C) scientific psychology originated in Greek and roman ages
(D) psychological principal are based on consensus of scientists