Observations of a patient with a digit span of only two items, but no general impairment in learning, memory, or comprehension, challenged the conceptualization of:

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This observation challenges the conceptualization of short-term memory, as it suggests that the patient has a significantly reduced capacity for holding information in short-term storage, despite having no broader cognitive impairments. This is relevant because short-term memory typically involves the ability to hold a small amount of information in an active, readily available state for a short period.

Observations of a Patient with a Digit Span of Only