Which developmental stage involves the use of logical reasoning about concrete situations and understanding the concept of conservation?

The developmental stage that involves the use of logical reasoning about concrete situations and an understanding of the concept of conservation is the concrete operational stage. This stage typically occurs between the ages of 7 and 11 years and is characterized by the ability to think logically about concrete events rather than abstract notions.

During this stage, children develop an understanding of the concept of conservation, which is the realization that quantity does not change even when its shape does, such as when water is poured from a tall, thin glass into a short, wide glass. This illustrates their ability to think logically about physical properties and understand that while objects may appear different, they can still be the same in other respects.

In contrast, the other stages do not exhibit these specific characteristics. The formal operational stage follows concrete operational development and involves more abstract and hypothetical thinking. The sensorimotor stage, which occurs from birth to about 2 years, focuses on learning through sensory experiences and motor actions, lacking logical reasoning. The preoperational stage follows the sensorimotor stage, typically from ages 2 to 7, where children begin to engage in symbolic play and are egocentric, but they do not yet grasp the concept of conservation or logical reasoning about concrete situations. Thus, the