Immediate Memory: Attention, Span, and Serial Order
Immediate Memory on the WME tests recall of material with no delay or a very brief unfilled delay. It reflects attention, encoding, and short-term storage rather than consolidation. Typical tasks are forward digit span, spatial span, word-list recall, and immediate story recall; the score is a baseline against which delayed recall is compared.
Core rules and concepts
- Forward span measures storage and attention. Backward span adds manipulation, so it is a working-memory measure, not a purer measure of immediate memory. A discrepancy between forward and backward span is informative.
- Serial order is part of the task. Items must be recalled in order unless the instructions say otherwise; order errors are scored even when the items are correct.
- Capacity depends on chunking. Grouping digits into phone-number patterns or words into semantic categories increases span without increasing the underlying store. Examiners should note obvious grouping because it affects interpretation.
- Attention gates encoding. Distraction, fatigue, anxiety, and pain reduce immediate recall. A low immediate score can therefore reflect attention rather than storage.
- Immediate recall is the denominator for retention. Delayed performance is interpreted relative to the immediate baseline; a high immediate score with a steep drop suggests a consolidation or retrieval problem, while uniformly low scores suggest encoding or attention.
Worked example
A candidate has a forward digit span of 7, a backward digit span of 4, immediate word-list recall of 8/12, and immediate story recall of 14/25. Reasoning: forward span 7 is within the average range, so basic storage and attention are adequate. Backward span 4 is low-average and requires manipulation, suggesting the executive component is weaker than storage. Word-list recall of 8/12 is within normal limits but shows a strong recency pattern-the last three items and two early items-so it may overstate durable storage. Story recall of 14/25 captures gist plus some details. The immediate profile is therefore adequate storage with weaker manipulation; delayed testing is needed before drawing conclusions about consolidation.
Traps that cost marks
- Treating backward span as a pure immediate-memory score.
- Crediting item recall when serial order is wrong.
- Ignoring practice effects from repeated exposure to the same digits or words.
- Changing pacing or grouping between examinees.
- Allowing rehearsal during a supposedly immediate task.
- Comparing immediate and delayed scores without checking that the delay and task demands were equivalent.