Thinking Skills: Logic, Patterns, and Argument
What thinking skills questions test
Thinking skills items assess reasoning rather than learned content. They include logical deduction, pattern and sequence completion, spatial reasoning, evaluating arguments, identifying assumptions, and detecting flaws. The common thread is that every answer must follow from the information given, not from opinion or outside knowledge.
Concepts to master
- Deduction: if all A are B and all B are C, then all A are C. Work only from stated premises.
- Conditional statements: "If P then Q" tells you that not-Q implies not-P, but not that Q implies P. Reversing a conditional is a classic error.
- Sequences: check differences, ratios, alternating rules, and positions before assuming a simple pattern.
- Assumptions: an argument relies on an unstated idea; the right answer is the one the argument cannot work without.
- Strengthen and weaken: ask what new fact would make the conclusion more or less likely.
- Spatial reasoning: rotate and fold mentally, tracking which features move together.
Traps to watch
Options that are plausible but not required by the premises. Conclusions that go beyond the evidence. Answers that confuse correlation with cause. In sequences, a rule that fits the first three terms but fails the fourth.
Worked example
"All students in the choir sing. Maya sings." Does Maya belong to the choir? No. Singing is necessary for choir members but not sufficient; many people sing without joining. Recognising that the conditional cannot be reversed avoids the trap.
Rule of thumb
For any argument, find the conclusion and the evidence, then ask what hidden link connects them. That link is usually the assumption being tested.