Incredible amazing brain Part 3: Sweet kid or grumpy kid, which do you prefer?

Ever have a sweet, little kid run up to you, throw his arms around you, and tell you how much he missed you this week? Ever have a grumpy, little kid snarl at you as he enters the classroom? He slides past you, goes over to the corner, and sits down. You already know from past experience that this kid is going to  Read more…