Auditory Memory: Encoding, Interference, and Retrieval
Auditory Memory on the WME tests how well you encode, retain, and retrieve information delivered through the auditory channel: spoken word lists, short stories, digit strings, and paired associates. Because the material arrives as sound, the domain isolates memory from hearing by presenting at a comfortable level and testing recall after the sound has ended. The exam is interested in auditory-verbal storage and retrieval, not speech perception.
Core rules and concepts
- Auditory-verbal material is encoded phonologically. The acoustic similarity effect (similar-sounding words are harder) and the word-length effect (longer words reduce span) are signatures of the phonological loop.
- Serial position matters. Early items benefit from rehearsal and enter longer-term storage (primacy); late items sit in a short-lived recency store. A filled delay removes the recency advantage, so delayed recall is a better test of storage.
- Capacity is measured in chunks, not raw items. A chunk is a meaningful unit formed by grouping, so a candidate who groups digits into dates or patterns can span more digits without a larger store.
- Interference is a major source of forgetting. Proactive interference occurs when earlier material disrupts new learning; retroactive interference occurs when new material disrupts earlier material. Exam tasks often present multiple lists precisely to create proactive interference.
- Recall and recognition are different. Free recall requires retrieval search; recognition supplies the target and is usually easier. Story recall is scored for gist and details, not verbatim wording.
Worked example
A candidate hears a 16-item shopping list once and recalls 9 items immediately: the first 4, the last 3, and 2 from the middle. After 25 minutes of nonverbal filler tasks, they recall 6 items. On recognition they identify 14 of 16 targets with 2 false alarms. Reasoning: the immediate profile shows strong primacy and recency, consistent with rehearsal of early items and a recency store. After the delay, recency items drop out, leaving 6 of the 9 initially recalled items (67% retention), which suggests partial storage rather than total loss. Recognition is far above free recall, pointing to a retrieval contribution. The 2 false alarms indicate feature or source confusion. The pattern is auditory-verbal with a retrieval component; it is not evidence of hearing loss.
Traps that cost marks
- Counting semantically related intrusions as correct; score them as errors and note them.
- Treating a large recency effect as good delayed memory; recency is fragile.
- Ignoring rehearsal or grouping strategies that inflate span.
- Scoring story recall for exact wording instead of gist plus detail.
- Applying the wrong age or education norms.
- Assuming a low auditory score means peripheral hearing loss.