Psychology explains why people sleep with the TV on

Sleeping with the television on is a common habit, driven by various reasons from finishing a series to needing ambient sound for rest. Psychologists explain that this behavior often stems from unconscious mechanisms related to security, managing thoughts, and the need for company.

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The familiar sound of the television functions for many people like a lullaby; upon recognizing it, the brain relaxes and feels greater security.

Psychologist Anna Svetlaya notes that the constant sound of the TV creates a predictable environment, reducing the brain's "vigilance" state. In complete silence, the brain remains highly alert to unexpected noises, which can be perceived as threats. The familiar sounds of a television, much like white noise or rain sounds, help the brain relax and feel more secure, acting as a modern-day lullaby.

Another key factor is "thought disruption." For individuals experiencing anxiety or racing thoughts at night, the voices and sounds from a program can divert attention from repetitive worries without demanding full concentration. This mental distraction helps in quieting the mind enough to fall asleep.

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In contrast, the constant sound of the television generates a known and predictable environment that reduces that feeling of alertness.

Svetlaya also identifies "parasocial comfort" as a reason. This refers to the emotional bond people form with media figures, actors, or characters. Hearing familiar voices can create a subjective sense of companionship, alleviating feelings of isolation. From an evolutionary standpoint, the human brain associates being completely alone with potential risk, making familiar sounds comforting.

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In those cases, the voices of a program or a movie provide a level of stimulation sufficient to partially divert attention from repetitive thoughts, without demanding total concentration.

While sleeping with the TV on offers these psychological benefits, Svetlaya suggests that recognizing this habit is the first step toward changing it for improved mental well-being. The underlying reasons often point to an avoidance of fear or anxiety, highlighting a need to address these feelings directly.

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Hearing familiar voices during the night can generate a subjective sense of companionship and reduce the perception of isolation.