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Screen time is the amount of time spent using a device with a screen such as a smartphone, computer, television, video game console, or a tablet. [1] The concept is under significant research with related concepts in digital media use and mental health .
Sedentary behavior enables less energy expenditure than active behavior. Sedentary behavior is not the same as physical inactivity: sedentary behavior is defined as "any waking behavior characterized by an energy expenditure less than or equal to 1.5 metabolic equivalents (METs), while in a sitting, reclining or lying posture".
The field of cognitive ergonomics emerged predominantly in the 70's with the advent of the personal computer and new developments in the fields of cognitive psychology and artificial intelligence. It studied how human cognitive psychology works hand-in-hand with specific cognitive limitations. This could only be done through time and trial and ...
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People become addicted or dependent on the Internet through excessive computer use that interferes with daily life. Kimberly S. Young [27] links internet addiction disorder with existing mental health issues, most commonly depression. Young states that the disorder has significant effects socially, psychologically and occupationally.
Posture can signal an individual's position in social hierarchy. A comparison of two different postures. On the left is an example of a more energized attitude; on the right is an example of a depressed attitude. If two people of different social standings talk to each other, the person with a higher position usually takes a more relaxed attitude.
Sitting is a basic action and resting position in which the body weight is supported primarily by the bony ischial tuberosities with the buttocks in contact with the ground or a horizontal surface such as a chair seat, instead of by the lower limbs as in standing, squatting or kneeling.
In many cases, frequent computer users develop computer vision syndrome, which is a degenerative eye problem which can result in severely reduced eyesight , blurred vision, overall eye tiredness and even glaucoma. Computer Eye Syndrome is an umbrella term for many problems but the causes of these problems can be easily identified.