Question

memory typically deteriorates over time, yet some individuals possess the ability to recall their past with extraordinary precision. in 2006, researchers discovered this capacity while studying jill price. she could identify the day of the week for any date and recount that day’s events in vivid detail. this led scientists to classify a rare cognitive condition called highly superior autobiographical memory, or hsam.
people with hsam differ from others in their temporal retention of experiences. while most memories typically fade within weeks, individuals with hsam maintain precise recollections of both personal and world events across decades. they also often demonstrate a particular aptitude for comprehending calendar patterns.
yet this remarkable ability has defined limitations. people with hsam show no enhanced capacity for facial recognition or numerical recall. they cannot match memory athletes, who train themselves using techniques that enable rapid absorption of diverse information.
how does the passage distinguish between typical memory and hsam?
it contrasts individuals with typical memories to those with hsam, who demonstrate exceptional performance in a wide variety of memory tasks.
it connects hsam to the concept of memory athletes, implying that hsam can be cultivated through deliberate practice.
it describes the way that memory typically fades fairly quickly, whereas hsam enables long - term recall of personal experiences.
it proposes that any disparities between typical memory and hsam can be explained by differences in daily routines and attention.

Explanation:

The passage states typical memory fades within weeks, while those with HSAM retain precise personal and world event memories across decades. It also notes HSAM has limitations (no enhanced facial/number recall, unlike memory athletes), so other options are incorrect: the first is wrong because HSAM doesn't excel in all memory tasks; the second is wrong because HSAM is a rare cognitive condition, not a cultivated skill like memory athletes; the fourth is wrong as daily routines/attention are not mentioned as a cause of differences.

Answer:

It describes the way that memory typically fades fairly quickly, whereas HSAM enables long-term recall of personal experiences.