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It is thought that Piaget overestimated the extent of egocentrism in children. Egocentrism is thus the child's inability to see other people's viewpoints, not to be confused with selfishness. The child at this stage of cognitive development assumes that their view of the world is the same as other people's.
Presbyopia is a physiological insufficiency of optical accommodation associated with the aging of the eye; it results in progressively worsening ability to focus clearly on close objects. [4] Also known as age-related farsightedness [5] (or as age-related long sight in the UK [6]), it affects many adults over the age of 40. A common sign of ...
People with hyperopia have blurry vision when viewing near objects because the eye is unable to focus the light sufficiently. This can be corrected with convex lenses, which cause light rays to converge prior to hitting the cornea. [13] Presbyopia: When the flexibility of the lens declines, typically due to age. The individual would experience ...
Cognitive disengagement syndrome (CDS) is a syndrome characterized by developmentally inappropriate, impairing, and persistent levels of decoupled attentional processing from the ongoing external context and resultant hypoactivity.
Directed attention fatigue (DAF) is a neuro-psychological phenomenon that results from overuse of the brain's inhibitory attention mechanisms, which handle incoming distractions while maintaining focus on a specific task. The greatest threat to a given focus of attention is competition from other stimuli that can cause a shift in focus.
Cognitive flexibility [note 1] is an intrinsic property of a cognitive system often associated with the mental ability to adjust its activity and content, switch between different task rules and corresponding behavioral responses, maintain multiple concepts simultaneously and shift internal attention between them. [1]
Computer vision syndrome (CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time and the eye's muscles being unable to recover from the constant tension required to maintain focus on a close object.
Hyperfocus may in some cases also be symptomatic of a psychiatric condition. In some cases, it is referred to as perseveration [2] —an inability or impairment in switching tasks or activities ("set-shifting"), [8] or desisting from mental or physical response repetition (gestures, words, thoughts) despite absence or cessation of a stimulus.