noun
human psychology
Refers to the psychological workings, behavior, or mental processes of humans, often in contrast to animal psychology or in discussions of human nature.
人間心理を理解することは、良い人間関係を築くのに役立つ。
Understanding human psychology helps build good relationships.
この小説は人間心理の深い洞察に満ちている。
This novel is full of deep insights into human psychology.
心理学 is the academic discipline of psychology, while 人間心理 refers more broadly to the actual psychological phenomena of humans.
Compound of 人間 (human) and 心理 (psychology, mental state).