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| a condition characterized by suddenly falling asleep or feeling very sleepy during the day |
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| a research method in which the psychologist observes the subject in a natural setting and without manipulation or control on the part of the observer |
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| a biological or psychological requirement for the well-being of an organism |
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| a relationship between two variables in which one variable increases as the other variable decreases |
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| increasing the strength of a given response by removing or preventing a painful stimulus when the response is given |
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| the long, thin cells that constitute the structural and functional unit of nerve tissue along which messages travel to and from the brain |
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| the chemicals released by neurons, which determine the rate at which other neurons fire |
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| a stimulus that does not initially elicit a response |
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| unpleasant dreams that contain frightning and anxiety producing images |
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| sleep disruptions that occur during Stage IV of sleep, involving screaming, panic, or confusion that is seldom remembered |
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| the free flow if umages and ideas, occuring with no particular goal |
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| conveying messages using space, body language, and facial expression |
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| a graph of frequency distribution shaped like a symmetrical, bell-shaped; a graph of normal distribution |
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| standards of comparison for test results developed by giving the test to large, well-defined groups of people |
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| shared standards of behavior accepted by amd expected from group members |
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| a change in attitude or behavior brought about by social pressure to comply with people percieved to be authorities |
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| a forced-choice test designed to study personality characteristics in which a person must select one of several answers |
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| a child's realization that an object exists even when he or she cannot hear, see or touch it |
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| learning by observing and imitating the behavior of others |
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| a recurring thought or image that seems to be beyond control |
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| obsessive-compulsive disorder |
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| an anxiety disorder consisting of obsessions and compulsions |
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