Final answer:
Psychologist Erik Erikson created a theory of personality development based on Freud's work. The primary focus of Erikson's stages of development is the resolution of conflicts at each stage. The achievement of developmental goals in Erikson's theory can be affected by successful completion of each task.
Step-by-step explanation:
Psychologist Erik Erikson (1902-1994) created a theory of personality development based on the work of Freud. His theory includes eight stages of development, beginning with birth and ending with death. The primary focus of Erikson's stages of development is the resolution of conflicts or tasks at each stage. The four major organizing concepts in Erikson's theory are trust vs mistrust, autonomy vs shame and doubt, initiative vs guilt, and identity vs role confusion. The achievement of developmental goals in Erikson's theory can be affected by successful completion of each task resulting in a sense of competence and a healthy personality, while failure to master these tasks can lead to feelings of inadequacy.