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Definition Stress refers to the body's and mind's response to challenges or demands that disrupt ...

Definition Socioemotional selectivity theory (SST) suggests that as people age, they tend to prio...

Definition The Schachter-Singer Two-Factor Theory of Emotion, developed by Stanley Schachter and ...

Definition Mood, in psychology, refers to a relatively enduring emotional state that influences h...

Definition Lazarus’ Cognitive-Mediational Theory of Emotion suggests that our emotions are not di...

Definition The James-Lange Theory of Emotion, proposed by William James and Carl Lange in the lat...

Definition The Facial Feedback Hypothesis is the idea that our facial expressions can influence h...

Definition Eustress is a positive form of stress that arises from situations perceived as excitin...

Definition Distress refers to a negative emotional state characterized by feelings of sadness, an...

Definition The Cannon-Bard Theory of Emotion, also known as the thalamic theory, suggests that em...

Definition In psychology, attitude refers to a learned tendency or mental orientation that predis...

Definition Wakefulness refers to a state of consciousness where an individual is fully aware of t...

Definition The stages of sleep refer to the distinct phases that occur during a sleep cycle, whic...

Definition Sleep paralysis is a temporary inability to move or speak that occurs during the trans...

Definition Sleep is a naturally occurring state of mind and body characterized by reduced physica...

Definition Rapid eye movement (REM) sleep is a stage of sleep characterized by quick, darting mov...

Definition Parasomnia refers to a category of sleep disorders characterized by unusual behaviors,...

Definition A meditative state, in psychology, refers to a mental state characterized by focused a...

Definition Insomnia is a sleep disorder characterized by difficulty falling asleep, staying aslee...

Definition Hypnosis is a psychological state characterized by focused attention, increased sugges...