Adolescence: Continuity, Change and Diversity The following discussion presents a summary of chapters 1-11 and 14 from Adolescence: Continuity, Change, and Diversity by Nancy J. Cobb. Chapter 1 - Defining Adolescents: Who Are They? Question 1 – What are Adolescents? Adolescents comprise approximately 14% of the total population. Three basic approaches to defining adolescents include: biological, psychological, and sociological. The biological definition recognizes the types of physical changes and events that characterize puberty. Puberty is a time of life during which bodies are transformed from that of a child to a sexually and physically mature adult. Psychologically, adolescence is characterized by the quest for self-identity....The end:
..... ensuring accuracy involves normalization of the participant population. This means that participants should be reflective of the population for which the results theoretically apply. Excluding minorities from the participant pool, for instance, can invalidate findings (Cobb, 2007, p. 461). Finally, research designs such as between-subjects, within-subjects, matched-subjects, and factorial designs determine how participants relate to independent variables. This is a critical factor in determining validity. Conclusion The current study has presented a summary of chapters 1-11 and 14 from Adolescence: Continuity, Change, and Diversity by Nancy J. Cobb. REFERENCES Cobb, N.J. (2007). Adolescence – Continuity, Change, and Diversity. McGraw-Hill.