I started reading positive psychology books and using positive psychology theories about six years ago. (positivepsychologyprogram.com)
Now, allow me to give you a brief tour through the fascinating history of child psychology by presenting some of the old high - ups in early child psychology theory. (positive-parenting-ally.com)
I will research which psychology theories and models to use in order to achieve this, with a focus on creative problem solving. (gamedev.net)