Final answer:
Ty should conduct a longitudinal study to track the development of Peruvian adolescents from puberty. This approach allows for observing biological and psychosocial changes over time and can be complemented by cross-sectional elements or stratified sampling for comparison and representation.
Step-by-step explanation:
To determine the typical amount of time it takes for Peruvian adolescents to develop from the onset of puberty, Ty should conduct a longitudinal study. This type of study involves following the same group of individuals over a period of time to observe their development. Given the nature of puberty, which involves biological and psychosocial development, Ty's research would benefit from tracking individuals as they experience various milestones of adolescence. By collecting data at different points throughout the developmental period, Ty would be able to construct a comprehensive picture of the developmental timeline and associated factors. To enhance the research, different methodologies could be integrated, including developmental screenings and psychosocial assessments referring to Erikson's stages of development.
Depending on the specifics of the study design, Ty might also consider using cross-sectional elements to compare different cohorts, or employing stratified sampling to ensure representation across various segments, such as age or gender. Such data may even contribute to understanding broader sociological impacts, as observed in educational or public health contexts, like the effectiveness of sex education programs discussed in the provided literature.