The cognitive-behavioral frame of reference (FOR) emphasizes five aspects of life experience: thoughts, behaviors, emotion/mood, physiological responses, and the environment. These aspects are interrelated, meaning that changes in one factor can lead to improvement or deterioration in other(s). Each is influenced by the social and physical environments. One key theoretical component in this FOR is the hierarchical levels of cognition. Automatic thoughts is the most accessible, which are uninvited and immediate thoughts. Beliefs are conditional beliefs we hold about ourselves.