From a psychological perspective, earworms are an example of mental imagery.

从心理学角度来看，耳朵虫是心理的假想。

After several more years of teaching, I came to the conclusion that what we need in education, is a much better understanding of students and learning from a motivational perspective, from a psychological perspective.

经过几年教学之后，我得出一个结论，我们在教育方面所需要的，是从学习动力的角度和心理学的角度，对学生和学习行为进行一次更为深刻的理解。

I am leading up to the part that expectation plays in the construction of your physical environment, but you can see now why it was necessary that I explain the psychological perspective to you beforehand.

我正在引出，期待，在构建你们的物质环境中所扮演的角色，但现在你可以看出来，为什么我有必要事先)向你们解释心理视角了。