Final answer:
Psychosocial theory provides insight into healthy development across the lifespan and is based on a diverse population. However, it does not fully develop the mechanisms of crisis resolution.
Step-by-step explanation:
A strength of psychosocial theory is that it provides insight into directions of healthy development across the lifespan. According to Erik Erikson's psychosocial development theory, our interactions with others shape our sense of self and influence our development. This theory emphasizes the social nature of our development and suggests that personality development takes place throughout our lives.
Another strength of psychosocial theory is that it has been based on a diverse population. Erikson's theory has been applied and studied in various cultural contexts, allowing for a broader understanding of human development.
However, it is important to note that psychosocial theory does not fully develop the mechanisms of crisis resolution. While it highlights the different stages of development and the tasks that need to be achieved at each stage, it does not provide detailed mechanisms for overcoming crises.