From Wikipedia: Mind Quiz, also known as Mind Quiz: Exercise Your Brain or Mind Quiz: Your Brain Coach (Nounenrei: Nou Stress Kei Atama Scan in Japan), is a mental training game for the Nintendo DS and PlayStation Portable. It is similar to Nintendo's Brain Age: Train Your Brain in Minutes a Day! It involves playing different training exercises to measure and improve particular parts of the player's brain, such as one's brain age and its brain stress degree.