Repeated exposure can change performance on a test. You may remember an item, recognize its structure or become more comfortable with the interface. These changes matter when interpreting a higher score after practice.
Separate three kinds of improvement
First, you might remember a specific answer. Second, you might learn a strategy that helps with similar questions. Third, you might improve on a broader ability that transfers to substantially different tasks.
These are different claims. Solving a familiar puzzle faster demonstrates performance on that puzzle; it does not by itself establish the third claim.
What research contributes
Research on repeated working-memory assessments has documented retest effects and examined factors such as test form and the interval between administrations. Reviews of brain-training studies also distinguish improvement on trained tasks from transfer to other tasks.
These findings support caution when reading a personal score trend. They do not provide a universal correction that you can subtract from every retest score.
An everyday example
The first time you see an alternating number sequence, you may spend most of the time searching for a single operation. After learning to test two-operation cycles, you approach the next similar sequence differently.
That is a useful skill. Describing it specifically—recognizing alternating operations—is more informative than assuming that a score increase proves an equal increase in general intelligence.
Make comparisons more transparent
Record whether you have seen the exact questions, similar formats or worked explanations. Note the time limit and whether you used assistance. Compare performance on fresh examples as well as repeated ones.
Do not try to erase practice effects by claiming a particular waiting period guarantees a clean measurement. The relevant effects depend on the test and circumstances.
Use starp history appropriately
If you repeat reasoning exercises, treat your results as a practice record with context. Look for methods you can explain, recurring errors you can reduce and unfamiliar questions you can handle more systematically. These are useful observations even when the score trend cannot isolate a broad change in intelligence.