refers to an impairment in the ability to detect a probe (e.g., the letter X) in a rapidly presented stream of letters when it follows a target letter (e.g., a white letter) that must be identified. Because the impairment is usually largest at a lag of a few letters, it is attributed to the utilization of attentional requirements for processing the target letter.

ATTENTIONAL BLINK: “An attentional blink is where a person fails to identify a noted stimulus due to a very short lapse in attention.”
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