A research team asked volunteers to identify changes between pairs of maps. The team recorded not only correct answers but also the moment each volunteer first paused. Some volunteers answered correctly after repeatedly checking the legend; others chose a wrong answer quickly because they ignored a change in scale. The researchers created four delay categories: unfamiliar symbol, missed scale, uncertain comparison, and no return rule. Each volunteer then practiced only the first category that had interrupted the decision. A day later, the volunteers received new map pairs with different symbols and scales. Improvement was counted only when a volunteer both chose correctly and explained the relevant map feature. The team did not treat a faster guess as progress. Nor did it assume that every slow answer had the same cause. By separating result, first delay, and later transfer, the record showed which kind of practice actually changed the next decision.