Observational or "social" learning is regulated by four component process, which results in a person translating a modeled event into a performance that is matched with the model. According to Bandura, a model can be either an actual person or symbolic, such as a book, a picture, or a set of instructions. The process consists of four variables: "attention", "retention", "behavior production", and "motivation". Each of these components has a function to engage either in the attainment of information about events or in the decision to put this information to use in guiding behavior.