Progressive Change Rules

Progressive change rules are unique because they involve a feature that changes systematically across the boxes in a set — each box shows a different stage in a progression. While most Type 1 rules involve a feature that is constant across all boxes, progressive rules involve a feature that varies predictably. They blur the line between Type 1 and Type 2 questions and require a different analytical approach.

---

How Progressive Change Rules Work in Type 1

In a standard Type 1 question, the boxes in Set A are not ordered — they simply all satisfy the same rule. In a progressive-change question, the boxes are implicitly ordered, and a feature increases, decreases, or cycles across them.

Important clarification: In Type 1 questions, the boxes are typically not presented in a meaningful order. However, the underlying rule can still involve a progressive element if the feature varies within a range rather than being constant. For example, "the number of shapes increases by 1 from the first to the last box" requires you to notice the progression even if the boxes are not explicitly labelled as a sequence.