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The DSM-5 defines atypical depression as a subtype of major depressive disorder that presents with "atypical features", characterized by: Mood reactivity (i.e., mood brightens in response to actual or potential positive events) At least two of the following: Significant weight gain or increase in appetite (hyperphagia);
Atypical depression (AD) is characterized by mood reactivity (paradoxical anhedonia) and positivity, [clarification needed] significant weight gain or increased appetite ("comfort eating"), excessive sleep or somnolence (hypersomnia), a sensation of heaviness in limbs known as leaden paralysis, and significant social impairment as a consequence ...
"Atypical depression" is characterized by mood reactivity (paradoxical anhedonia) and positivity, significant weight gain or increased appetite (comfort eating), excessive sleep or sleepiness (hypersomnia), a sensation of heaviness in limbs known as leaden paralysis, and significant long-term social impairment as a consequence of ...
In psychology, the term affect is often used interchangeably with several related terms and concepts, though each term may have slightly different nuances. These terms encompass: emotion, feeling, mood, emotional state, sentiment, affective state, emotional response, affective reactivity, disposition. Researchers and psychologists may employ ...
The idea of social mood as a "collectively shared state of mind" (Nofsinger 2005; Olson 2006) is attributed to Robert Prechter and his socionomics. The notion is used primarily in the field of economics (investments). In sociology, philosophy, and psychology, crowd behavior is the formation of a common mood directed toward an object of ...
Reactivity can also occur in response to self-report measures if the measure is elicited from research participants during a task. For example, both confidence ratings and judgments of learning, which are often provided repeatedly throughout cognitive assessments of learning and reasoning, have been found to be reactive.
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Collectively, their research established that certain behaviors could be learned or unlearned, and these theories have been applied in a variety of contexts, including abnormal psychology. [4] Theories specifically applied to depression emphasize the reactions individuals have to their environment and how they develop adaptive or maladaptive ...