Predictably Irrational
by Dan Ariely
Nonfiction · 1100L (~9th–10th grade) · 304 pages · 2008
Why we'd hand it over
Intellectually rigorous and genuinely eye-opening, but written for adults; a precocious 14–15-year-old who loves puzzles or debate will find it revelatory, while younger readers will hit the cognitive-load ceiling.