Final answer:
The statement 'Once a schema has been established, it is difficult for people to accept new information that contradicts it' is true. Therefore, the given statement is true.
Step-by-step explanation:
True
The statement 'Once a schema has been established, it is difficult for people to accept new information that contradicts it' is true. A schema is a mental construct that allows the brain to organize information efficiently. When a schema is activated, the brain makes immediate assumptions about the person or object being observed. These assumptions can create a cognitive bias that makes it challenging to accept new information that contradicts the existing schema.