FEAR is an emotional reaction to threats and danger. It is a basic survival mechanism occurring in response to a specific stimulus, such as pain or the threat of pain. Fear should be distinguished from the related emotional state of anxiety, which typically occurs without any external threat. Additionally, fear is related to the specific behaviors of escape and avoidance, whereas anxiety is the result of threats which are perceived to be uncontrollable or unavoidable. There are varieties of fear and different terms to describe them in relation to the degree of fear that is experienced. It varies from mild caution to extreme phobia and paranoia. Fear is related to a number of additional cognitive and emotional states including worry, anxiety, terror, horror, panic, and dread. As an individual emotional state, fear can affect the unconscious mind, where it can become manifested in the form of nightmares. Fear may also be experienced within a larger group or social network. In this way, personal fears are compounded by social influence to become mass hysteria.
The experience of distrust can be explained as a feeling of mild fear or caution, usually in response to an unfamiliar or potentially dangerous person. Distrust may occur as a feeling of warning towards someone or something that is questionable or unknown. For example, one may distrust a stranger who acts in a way that is perceived as odd or unusual. Likewise, one may distrust the safety of a rusty old bridge across a 100-foot drop. Distrust may serve as an adaptive, early warning signal for situations that could lead to greater fear and danger.
Terror is an acute and pronounced form of fear. It is an overwhelming sense of immediate personal danger. It can also be caused by perceiving the object of a phobia. Terror may overwhelm a person to the point of making irrational choices and atypical behavior. Paranoia is a term used to describe a psychosis of fear. It is experienced as longstanding feelings and perceptions of being persecuted. Paranoia is an extreme emotional state combined with cognitions, or more specifically, delusions that one is in danger. This degree of fear may indicate that one has changed his or her normal behavior in extreme or maladaptive ways. (Wikipedia)
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