IntroductionAdolescence is the transitional stage after childhood according to researchers' theories (Berk, 2010). Adolescents will face a number of distinctive developmental challenges, including coping with rapid changes in their bodies, managing their sexual significance, developing new affiliations, creating parent-child bonds, and planning their academic and career expectations. Therefore, this assignment will explore the physical and emotional developmental stages of human beings according to Erik Erikson's theory, identifying two developmental issues in the given case study, the author's developmental stage and a preview of an article relating to the stages of development. DiscussionPhysical ChangesThis case study concerns a 15-year-old boy named Marcus who experiences a number of problems during his adolescence. One of Erik Erikson's eight stages of human development is identified as the confusion between identity and role that begins in adolescence. During this stage, an adolescent begins to question their role in life and may experience confusion about their future role as an adult (Berk, 2010). Erik Erikson states that the first sign of physical changes is puberty and that each individual reaches puberty at different ages (Berk, 2010). As a man, Marcus is overweight, short, and has a very high-pitched voice unlike the other boys' physiques. His body image may be linked to genes present in his family which make him vulnerable to his peers who always make fun of his image. Any abnormality must therefore be detected early to avoid dysfunction in adulthood which can prove difficult to address once the stage has passed (Goodman, McEwen, Dolan, Schafer-Kalkhoff & Adler, 2005). The emotional state. ..... middle of article ......nal of Divorce & Remarriage, 51(2), 83-107.Berk, LE (2010). Development across the lifespan (5th ed.). Boston: Pearson Education Inc. Bulanda, R.E. and Majumdar, D. (2009). Perceived parent-child relationships and adolescent self-esteem. Journal of Child and Family Study, 18(7), 203-212.Crain, W. (2005). Developmental Theories: Concepts and Applications (5th ed.). New Jersey: Pearson Prentice Hall. Goodman, E., McEwen, B.S., Dolan, L.M., Schafer-Kalkhoff, T., & Adler, N.E. (2005). Social disadvantage and adolescent stress. Journal of Adolescent Health, 37(11), 484-492. Ohannessian, C. M. (2009). Media use and adolescent psychological adjustment: An examination of gender differences. Journal of Child and Family Study, 18(2), 582-593. Perry, DG and Pauletti, RE (2011). Gender and adolescent development. Journal of Adolescent Research, 21(1), 61-74.