Choose at least two theories/arguments. You will need at least one to support each side of the argument (you may choose other theories not included below). John Bowlby's Attachment Theory Jean Piaget Theory of Cognitive Development B.F. Skinner's Theory of Operant Conditioning Harry Harlow's Attachment Theory Sigmund Freud's Psychosexual Stage Theory Albert Bandura's Social Cognitive Theory Mary Ainsworth Attachment Theory John B. Watson (classical conditioning) Noam Chomsky's Theory of Language Acquisition Erik Erikson's Psychosocial Stage Theory