Logical Reasoning · Paradox
PrepTest 125 · Section 4 · Question 21
Phase 1 (your first ~400 questions): read the guidance, then answer. No clock.
Step 1 · Pre-Question Guidance · read this first
- “fewer”
- “greater”
- “most”
- “then”
Playground logic
Owen's group flew planes better than most when Marcus gave bad tips, but worse than most when Priya gave good tips. Strange! The handshake: those kids ignore tips. Bad tips could not hurt them, and good tips could not help them.
Step 2 · The kid story
The Paper Airplane Puzzle
In art class, Ms. Rivera ran an experiment. First Marcus, playing a sneaky coach, gave every kid terrible paper airplane tips. "Fold the nose up! Use wet paper!" Then Priya gave every kid excellent tips to fix their planes. Lulu tracked the results. "Weird. Owen, Kevin, and Nadia had fewer crashes than most kids during Marcus's bad tips. But during Priya's good tips, they had MORE crashes than most kids." Tommy scratched his head. "So are they good fliers or bad fliers?" Priya sipped her juice box. "Maybe neither. Maybe they just don't listen to coaches at all. Marcus's bad tips couldn't wreck them, and my good tips couldn't fix them." Owen shrugged. "I wasn't listening to either of you." Ms. Rivera laughed. "Mystery solved."
Step 3 · Try the model question
In a class experiment, a coach gave students bad tips for folding paper airplanes, and then a second coach gave them good tips. The students whose planes crashed less than most others under the bad tips crashed more than most others under the good tips.
Suppose each statement below is true. Which best explains the surprising result for those students?
Step 4 · The courtroom tale
The Case of the Stubborn Jurors
Judge Okafor frowned at a report. "Counselor, in our mock-trial study, a sneaky speaker tried to confuse the jurors about a stolen bicycle, and then a helpful speaker tried to clear things up. Some jurors got fewer facts wrong than most during the confusing speech, but more wrong than most during the helpful one. Explain that." Mr. Whitfield adjusted his suspenders. "Your Honor, those jurors are simply stubborn. Nobody's speech moves them. The tricks could not trip them, and the help could not help them." The judge nodded. "One trait, both results. Very tidy."
Step 5 · Work the real question
Open PrepTest 125, Section 4, Question 21 in your official copy from LSAC (for example in LawHub) and read it there.
Your answer
How to apply it
Write down both sides: a group beat most others in the first round and trailed most others in the second. Ask what single trait would cause both. Run the Handshake Test: the right choice must explain round one AND round two. Cross out Half-Hugs that explain only one round, like a skill that would help in both rounds. Look for a trait about how the group responds to the questioning itself.