Development psychology has undergone many changes since the beginning of the 20th century. Notable theorists whose impact determined child psychology and early childhood education are JEAN--&-PIAGET ERIK ERIKSON Jean Piaget’s COGNITIVE DEVELOPMENT THEORY . THAT’S A FISH!! oh ok mom thank u “no.an animal that swims??? THEN. sweeti that’s a duc . Sensorimotor stage This represents the period from infancy and up to two years of age. . Preoperational period It takes place between two and seven years where symbolic thoughts develop. . .Concrete stage Children between the ages of seven to eleven learn to reason and perform mental problems on numbers. Formal operation stage It occurs from eleven years of age to adulthood. . Abstract thinking takes center stage. . ERIK ERIKSON’S Psychosocial Development Theory . mistrust Occurs in children below the age of one wherein trust should be established.Trust vs. . The child develops some sense of independence through learning . Shame and Doubt Takes place between one and three years of age.Autonomy vs. children become aware of the social environment.Initiative vs. . Gu Takes place between three and six years of age. Inferiority It covers the ages of six to twelve. .Industry vs. Competition with fellow children brings out the abilities and skills of the children. An individual forms an identity. .Identity vs. understands his/her role in society and experiences a sense of direction in life. Confusion The period coincides with the onset of adolescence up to young adulthood. Intimacy vs. . Isolation Relationships are significant factors for the success of individuals. .Generativ ity vs. work and career. stagnatio In adulthood. n people are productive in their lives through family. Despair Deals with the period of old age. people look back into their lives. and accomplishments.Integrity vs. . differences . . He asserts that the environment interacts with an individual to influence the development.Erik’s theory focuses on the entire development process in life in eight stages. His emphasis is mainly in the earlier stages below the age of twelve. .Piaget’s theory of cognitive development looks into thought processes of a person. . Erikson’s theory holds that the first stage ends at one year old while Piaget postulates that the first stage ends at two years of age.Despite the use of stages. they both differ on the timing aspect. Erik posits that at this stage. . relationships and self-discovery. the teenager focuses on independence in decision-making.Piaget views an adolescent as a rational being with rational thoughts. Erikson dwelled on personality development Piaget focused on cognitive development through mental processes . Similarities . .Both of these theories examine the issue of developmental psychology using phases to explain the process. .The two theories build on the idea that personality development takes place across a person’s lifespan. Adolescence and Their Significance Cognitive development also takes place with language being understood in the early years while abstract thinking occurs at adolescence. Social development and emotional expressions also accompany people in development while security and safety at younger ages leads to a better outlook on the surroundings.Early Childhood. . . Jack et al. New York: Springer Publishing Company. Julie. 2011. Print Smart. Rathus. Spencer. 2011. New York: Centage learning. “Comparing and Contrasting Jean Piaget and Erik Erikson Work on Child Psychology”. Childhood and Adolescence: Voyages in Development. New York: Centage learning. Print Snowman. Psychology Applied to Teaching. Print . 2012. 2010.References MHK-RAD. Disability across the Development Life Span.