person 's personality forms age phallic stage child aware sexual organs fourth ''latency stage'' occurs age five puberty latency stage child 's sexual interests repressed stage five ''genital stage'' takes place puberty adulthood genital stage puberty starts happening theories cognitive development jean piaget swiss theorist posited children learn actively constructing knowledge hands experience ref name woodwoodboyd ref suggested adult 's role helping child learn provide appropriate
Social science Psychology Developmental psychology