Final answer:
Continuous development is a gradual process of improvement, while discontinuous development occurs in unique stages. Atypical life stages refer to experiences that deviate from typical patterns of development.
Step-by-step explanation:
Continuous development views development as a cumulative process, gradually improving on existing skills. With this type of development, there is gradual change. An example of continuous development is a child's physical growth, adding inches to height year by year. On the other hand, theorists who view development as discontinuous believe that development takes place in unique stages. An example of discontinuous development is an infant's ability to understand object permanence. Atypical life stages refer to experiences that deviate from the typical or expected patterns of development. These may include physical or cognitive delays, disabilities, or other unique circumstances. It is important to note that atypical life stages can still be part of a person's continuous development.