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A selective attentional mechanism is required because..
  • A
    of the limited capacity of the central decision maker and working memory.
  • B
    the capacity of the long term memory is limited.
  • C
    of the limitations of the sense organs.
  • D
    of limitations in our store of motor programmes.

SELECTIVE ATTENTION

With selective attention, one gives greater attention to one or more sources of input out of several. It is the process during which information is sampled to see if it is relevant, which makes you able to detect information meant for you, such as your callsign, even if you are not specifically monitoring the source. Such selective mechanism is required because the resources of the Central Decision Maker and short-term memory are limited and processing all stimuli approaching it from the envionment would lead to saturation.

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