Sin in Christian Teachings

Under the early adulthood stage, cognitive development of early adults has already reached its formal operational stage, according to Jean Piaget’s Theory of Cognitive Development. Under the formal operational stage, the operational thoughts of humans are more “abstract, idealistic, and logical,” and adults are no longer confined to concrete thoughts, which are the operational thoughts common among children (Santrock 2000 335). Aside from thinking abstractly, early adulthood stage brings about among humans the ability to solve problems and test solutions, which are the character...