For how many seconds short term memory holds information.

Question

Accepted Answer

The correct option is 1:

Short-term memory (STM), often referred to as "working memory," is a temporary storage system that holds a limited amount of information for a brief period. Classic research in cognitive psychology, particularly by Peterson and Peterson (1959), demonstrated that without rehearsal, information in short-term memory decays rapidly. Their studies showed that the duration of short-term memory is generally around 18-30 seconds. This duration can be slightly extended through active rehearsal (repeating the information), but its capacity remains limited to about 7 +/- 2 items. This brief duration is crucial for processing current information and preparing it for potential transfer to long-term memory.

The incorrect option is 2: 50 Seconds

50 seconds exceeds the generally accepted duration of short-term memory without continuous rehearsal. While some information might persist for longer with active effort, the typical, un-rehearsed duration is significantly shorter, usually not extending beyond 30 seconds.

The incorrect option is 3: More than 50 Seconds

A duration of more than 50 seconds is far beyond the typical capacity of short-term memory. If information is held for this long, it likely indicates that it has either been continuously rehearsed or has already been transferred into long-term memory.

The incorrect option is 4: None of the above

Given that "30 Seconds or less" accurately describes the typical duration of short-term memory, this option is incorrect. The other options are not consistent with the established scientific understanding of short-term memory's duration.