Glossary O

Observational studies are correlational investigations in which researchers watch participants and code measures from the observed behavior, either "live" or from videotapes

Observational terms are terms that refer to empirical events according to logical positivism,.

Observer bias refers to the tendency of an observer to distort observations or perceptions to match his or her expectations .

Observer Drift refers to a phenomenon in which observers who work closely together subtly, and without awareness , begin to Drift away from other observers in their ratings.

Observer effect refer to the changes in a person's Behavior brought about by an Awareness of being observed.

Observer influence refers to the tendency of participants to react to an observer"s presence by behaving in unusual ways

Obsession is defined as recurrent intrusive thought or impulse the client seeks to suppress or neutralize while recognizing it is not imposed by outside forces. Obsession, moreover, is defined as an unwanted thought, word, phrase, or image that persistently and repeatedly comes into a person's mind and causes distress.

Obsessions refer to uncontrollable, pervasive, intruisve, irrational, persistent and recurring thoughts, images, ideas, or impulses that an individual feels intrude upon his or her consciousness and that cause significant anxiety or distress that interferes with his/her day to day functioning; persistent, intrusive, and irrational thoughts, ideas, impulses, or images that focus on improbable or unrealistic events or on real-life events that are greatly exaggerated.

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