Extreme levels of mental<unk>  lead to an inability to perform regular tasks and irritability. Studies that require participants to carry out<unk> -demanding tasks under conditions of high distraction reveal how unpleasant a mentally<unk> d person can be. After exposure to such an experience, individuals are less likely to help someone in need. They are also more aggressive, less tolerant, and less sensitive to socially important cues.<unk>  that is experienced by participants of these kinds of studies is induced by<unk> -intensive tasks, and the observed effects of such<unk>  are correlated with decline in inhibitory control. Signs of<unk>  include temporarily feeling unusually distractible, impatient, forgetful, or cranky when there is no associated illness. In more severe forms, it can lead to bad judgment, apathy, or accidents, and can contribute to increased stress levels. There are 6 major areas of mental processing that are affected during onset of DAF, which are as follows: # Input — One may experience misperception and miss social cues. # Thinking — One may experience feelings of restlessness, confusion, forgetfulness and/or decreased metacognition. # Behavior — One may experience feelings of impulsiveness and recklessness, and may find that they have a diminished level of threshold between thoughts and actions. One may also act out-of-character. # Executive Functioning — One may experience an inability to plan and make appropriate decisions and may experience impaired judgment ability. # Emotions — One may experience being short-tempered and feelings of unpleasantness. # Social Interactions — One may experience heightened irritability and increased frequency of antisocial feelings. Overlap of symptoms from the six above categories is highly indicative of<unk> . Link to ADHD The symptoms of<unk>  deficit hyperactivity disorder closely mirror the symptoms of<unk> . Like<unk> , ADHD involves the prefrontal cortex. Specifically, the right prefrontal cortex is less active among children with ADHD. Experimentation has shown that the severity of ADHD symptoms can be correlated to the degree of asymmetry between blood flow in the left and right prefrontal cortex. It is possible that DAF and ADHD involve disruption of the same underlying mechanism, and recent clinical evidence has found that the same treatments used for<unk>  may reduce the symptoms of ADHD in children. However, it is important to note that unlike ADHD, DAF is a temporary condition rather than a clinical disorder.
Directed attention fatigue
Sundowning
Sleep state misperception
Listener fatigue
Stress concentration
Repressed memory
Wandering 
Anxiety