1. Selective attention also contributes to the impairment of younger children's information encoding process.2. However, recent studies suggest that perceptual learning occurs without selective attention . 3. Visual selective attention is an essential factor in producing efficient, goal directed behaviour. 4. The effect apparently depends on selective attention rather than merely the source of stimulation. 5. Therefore, to operate efficiently, this goal directed behaviour is mediated by visual selective attention . 6. Visual selective attention is typically impaired in Alzheimer s disease. 7. Another variant of the basic paradigm of selective attention is the visuospatial cueing paradigm. 8. Visual selective attention is typically impaired in this disease. 9. The development of selective attention has also been examined. 10. When sleep-deprived, PCC activity decreases, impairing selective attention .