Pre-Testing Before Learning: Why Getting It Wrong First Helps You Remember

What exactly is pre-testing?

Pre-testing (sometimes called the pre-question effect or predictive learning) is a study strategy in which you attempt to answer questions about material you have not yet revised, using whatever you already know or can reasonably guess. You are not expected to know the answers. The failure itself is the point.

This is the opposite of the typical revision approach, in which a student reads notes or a textbook chapter first and then tests themselves. Pre-testing reverses the order: question first, material second.

Research in cognitive psychology, particularly studies by Kornell, Hays, and Bjork, has shown that students who attempted questions before studying new material recalled significantly more of that material in tests taken days or weeks later, compared with students who studied first and tested second — even though both groups spent the same amount of time overall.

Why does getting things wrong before studying help you remember?

Several cognitive mechanisms appear to work together:

1. Activated curiosity. When you attempt a question and are unsure of the answer, your brain enters a state of heightened attention — a kind of cognitive alertness that primes it to notice and store the correct answer when it appears.

2. Error signalling. The brain registers the gap between what you guessed and what is correct. This mismatch creates a stronger memory trace than simply reading new information passively, because the correction becomes meaningful.

3. Schema priming. Attempting questions activates whatever related knowledge you already hold, building a framework that new information can attach to. A student who has tried to recall what they know about enzymes before reading about them arrives at the text with a primed schema ready to receive the new detail.

4. Reduced over-confidence. Pre-testing shows you clearly what you do not know before you study. This prevents the illusion that reading something makes you know it — a common and costly mistake in revision.

A worked example: pre-testing for GCSE history

Suppose a Year 11 student is about to revise the causes of the First World War.

Without pre-testing: She reads her notes on MAIN (Militarism, Alliance systems, Imperialism, Nationalism) for 30 minutes, then re-reads them to check understanding. She feels confident.

With pre-testing: Before opening her notes, she writes down for five minutes everything she can recall about the causes: dates, events, key figures, relationships between countries. Most answers are incomplete or uncertain.

She then reads her notes with specific questions in her mind: "Was I right about the alliance structure? What did I miss about nationalism?" The gaps she identified pull her attention to the exact content she needs to learn.

Tested two weeks later, the pre-tested student will typically outperform the notes-first student on recall of specific detail — particularly the detail she originally got wrong.

How do you use pre-testing practically in revision?

Here is a simple three-step approach:

The five to ten minutes of pre-testing costs very little time but substantially increases the return from the study period that follows.

Does pre-testing work for all subjects?

Pre-testing is broadly applicable but has different natural forms in different subjects:

• Sciences: Attempt to recall a process, formula, or definition before reading about it. "What do I think the products of aerobic respiration are?" before looking at your notes.
• History and geography: Write a brief account of a case study or event before re-reading. Errors will highlight exactly which facts to focus on.
• English literature: Before revising a scene or theme, write what you know about it from memory — quotes, analysis, context. Gaps become your revision agenda.
• Maths: Attempt a problem type using whatever method you currently believe to be correct before checking worked examples. When you see the correct method, the contrast with your attempt makes the steps memorable.

What is the difference between pre-testing and just guessing?

Guessing randomly is not pre-testing. Effective pre-testing is an effortful attempt to retrieve whatever is already known, follow the logic as far as it goes, and note specifically where the reasoning breaks down. The mental effort of reaching the edge of your knowledge, and then stopping, is what creates the conditions for deep encoding when the correct answer follows.

If you write "I have no idea" and move on, the benefit is reduced. If you write "I think it involves glucose and oxygen — something to do with the mitochondria — but I'm unsure about what's released", you have created a precise learning target.

Frequently asked questions

Can pre-testing replace normal retrieval practice?

No. Pre-testing works best as the opening phase of a study session on material you are learning for the first or second time. Retrieval practice — testing yourself after you have already studied material — is a different and equally important technique for strengthening memory over time. Pre-testing primes encoding; retrieval practice builds long-term retention. Both belong in a complete revision plan.

Should I pre-test at the start of every revision session?

For topics you are approaching for the first time in your revision cycle, yes. For topics you are returning to — where you have already done a full study session — standard retrieval practice (cover and recall, past paper questions) is more appropriate, since you are no longer a genuine beginner on the material.

What if pre-testing makes me feel stupid?

This is one of the most important mindset points in revision: getting things wrong during pre-testing is not evidence that you are bad at the subject. It is the mechanism by which the technique works. The errors are not a measure of your ability — they are a learning tool. Students who are willing to be wrong before they study tend to remember more than those who avoid the discomfort of uncertainty.

Can I use pre-testing for a whole exam paper?

Yes — this is called a "cold sit" or diagnostic past paper. Attempting a full past paper at the very start of your revision, before any structured preparation, reveals your raw knowledge baseline and creates powerful learning targets for the revision that follows. It will feel uncomfortable; the results will guide your entire revision plan.

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