when does the fetus begin to develop memory
Prenatal memory There is some evidence that fetal memory may begin within the second trimester after conception. Substantial evidence for fetal memories has been found at around 30 weeks after conception.[1] Fetal memory is important for parental recognition, and facilitates the bond between child and parents. One of the most important types of memory is that which stores information contributing to the maternal bond between infant and mother. This form of memory is important for a type of development known as attachment.[2] Fetal memory is thus critical to the survival of the fetus both prenatally (in the womb) and after birth as an infant.
Piaget's theory of cognitive development In his theory of Cognitive development, Jean Piaget proposed that humans progress through four developmental stages: the sensorimotor, preoperational, concrete operational and formal operational period.[20] The first of these, the sensorimotor stage "extends from birth to the acquisition of language."[21] In this stage, infants progressively construct knowledge and understanding of the world by coordinating experiences (such as vision and hearing) with physical interactions with objects (such as grasping, sucking, and stepping).[22] Infants gain knowledge of the world from the physical actions they perform within it.[23] They progress from reflexive, instinctual action at birth to the beginning of symbolic thought toward the end of the stage.[23]