Betsy and jacob story : betsy wanted to bring jacob a present. She went to look for her mother: reliance on background knowledge to make correct interpretation of events depends on memory. H. m : amnesia patient memory loss was an unanticipated by product of the brain surgery intended to control his epilepsy developed antrograde memory could remember everything before the surgery but: result: couldn"t create new memories. Cognitive psychology the scientific study of the acquisition, retention and use of knowledge. Our self-concept depends on our knowledge episodic knowledge in particular. Our emotional adjustment to the world rely on our memories. Our ability to understand a story or a conversation depends on our supplementing that experience with some knowledge (ie. betsy and jacob story) The only way to study thoughts is for each of us to introspect look within to observe and record the content of our own mental lives and the sequence of our own experience.