Problem: First, you will select and explain a specific stage (early or middle adulthood) in terms of its typical age range and major developmental milestones (biological, physical, cognitive, emotional, and social). Then, you will identify a construct that is relevant to your chosen stage. A construct is a behavior, emotion, or experience that can be studied in more detail. For example, key constructs in adulthood could include (but are not limited to) career development, romantic relationship formation, and parenting. You will explain what the construct is and how it is important to your chosen developmental stage. Next, you will select a theory that helps to explain your chosen construct in your chosen developmental stage. You may choose from Erikson's theory, information processing theory, attachment theory, behavioral theory, or observational learning theory. Do not choose Piaget or Vygotsky for this capstone. Explain the major ideas in your chosen theory, and discuss how this theory helps to explain why your construct is important during your selected developmental stage. Finally, you will design a new study of your construct that could be conducted in your selected developmental stage. Use theory to guide the articulation of your research question and hypothesis. Need Assignment Help?