Final answer:
The 'tip of the tongue' syndrome is most commonly associated with difficulties retrieving information from long-term memory. It illustrates the challenge individuals sometimes face when trying to recall stored memories that are not frequently accessed or partially forgotten.
Step-by-step explanation:
The "tip of the tongue" syndrome is associated with long-term memory. This cognitive phenomenon occurs when someone is unable to fully retrieve a word or name from memory but has a strong sense of an imminent recollection, feeling that retrieval is just out of reach. In this state, individuals often can recall similar-sounding words or related concepts, suggesting that they are delving into their long-term memory where information is stored on a more permanent basis. Unlike sensory memory, which is very brief, or short-term memory, which holds a limited amount of information for a short time, long-term memory refers to the continuous storage of information and includes the capacity to store more complex and semantic forms of information.