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Verbal memory

Word-List Recall with Proactive Interference

You'll see 3 lists of words, one after another. After each list, try to recall just that list. Later lists get harder because earlier ones get in the way — that's proactive interference, and the size of the effect is the cognitive signal.

What makes this one different

Most word-recall tests just give you one list. We plot per-list recall so you can see the proactive-interference curve — a useful pattern in diagnosing attention vs. retrieval issues (loosely).

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Recall by list

If list 3 is much worse than list 1, that's classic proactive interference.

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What problem does it solve?

Verbal memory for unrelated word lists is the canonical short-term-memory task. By showing lists in sequence and measuring per-list recall, we can isolate the role of proactive interference — earlier learning that disrupts later learning — which is one of the most-cited mechanisms in everyday forgetting.

Who is this for

How to interpret your results

List 1 recall of 70%+ is typical.

List 3 vs List 1 drop is the proactive-interference signal. A drop of 10–20% is normal. A drop of 40%+ may indicate strong interference susceptibility.

Limitations

  • Spelling and typing speed affect the score. We use a fuzzy match but it's not perfect.
  • The word pool is common English nouns. Multilingual users may see words whose meaning they recognize but can't produce.

FAQ

Order matters — should I recall in original order?

No, any order counts. We're measuring recall of the items, not serial order.

Why does later recall drop?

Earlier lists compete with later ones for the same memory slots. The more you've stored, the more noise there is when you try to add more.

How do I use Word-List Recall with Proactive Interference step by step without mistakes?Follow the order given in the usage section: Memorize word lists A, B, C in sequence. We measure proactive interference — how much an earlier list hurts recall of a later one — and plot per-list recall decay. The step-by-step part matters less than the unit check that sits inside it. Confirm every unit matches the thing you are actually trying to measure before you press calculate - that single check catches more wrong answers than any other habit, and it costs about ten seconds.
What are the common mistakes when using Word-List Recall with Proactive Interference?Most common mistakes come down to four habits: entering 20 when the field expects 0.2 because the field is a percentage; leaving a field blank and accepting the default without checking what it stands for; changing one input and reading a result that was calculated before the change; and quoting the output as an exact figure when the page describes it as a reference estimate. Press calculate again after any edit, and treat the number as a reference point rather than a final answer.
How do I read the result from Word-List Recall with Proactive Interference?Read the final figure first, then come back to this section for the conditions behind it: List 1 recall of 70%+ is typical. List 3 vs List 1 drop is the proactive-interference signal. A drop of 10–20% is normal. A drop of 40%+ may indicate strong interference susceptibility. Keep two things apart: the number itself, which comes from the values you typed, and the assumptions it depends on, which decide whether that number is meaningful. The page sets out what a higher or lower result means for your case, so check that direction as well as the magnitude.
Can I act on the Word-List Recall with Proactive Interference result directly?Treat it as one reference sheet before you decide, rather than as the answer itself: Spelling and typing speed affect the score. We use a fuzzy match but it's not perfect. The word pool is common English nouns. Multilingual users may see words whose meaning they recognize but can't produce. The output describes a magnitude under the conditions you entered. It does not include what it actually costs to act, what might change while you act, or how the other side behaves. Before you commit, compare the result against reality and note which assumptions do not hold where you are.