psychology of moral education

例句：

1. 1. The psychology of decision-making is a fascinating field of study.
   决策心理学是一个引人入胜的研究领域。
2. 2.He was studying the psychology of human behavior when he stumbled upon the answer to his problem.
   他在研究人类行为心理学时，偶然发现了解决他问题的答案。
3. 3.The psychologist's theory has been tested and proven to be accurate.
   这位心理学家的理论已经被测试并证明是准确的。