Final answer:
According to Erikson's theory, Leah has not yet encountered the psychological conflict of middle childhood.
Step-by-step explanation:
According to Erikson's theory, Leah has not yet encountered the psychological conflict of middle childhood. Erikson proposed that we experience eight stages of development over our lifespan, with each stage representing a different conflict or task that we need to resolve. In middle childhood, the psychological conflict involves developing a sense of industry and competence. Since Leah has not yet encountered this stage, she has not had the opportunity to resolve this particular conflict.