https://www.happierhuman.com/achievement-motives-and-emotional-processes-in-children-during-problem-solving-two-experimental-studies-of-their-relation-to-performance-in-different-achievement-goal-conditions/ Happiness: Backed by Science Sat, 16 Feb 2019 05:48:10 +0000 hourly 1 https://wordpress.org/?v=5.9.3