1) When writing a psychological paper, the most important thing is to convey factual information through words, which is supported by research, so the choice of vocabulary should be as accurate as possible.
2) The writing of psychology may involve many complicated concepts and need the support of many historical studies.
3) Direct quotation is seldom used in writing psychological papers. On the contrary, it should extract the main ideas and viewpoints in the literature and provide correct citation information.
4) In the writing of other humanities papers, we may repeat certain words or phrases for emphasis, while in the writing of psychology papers, we seldom repeat them.