There is a long works cited at end of the post
That is not a works cited section because there are no citations! It’s a list of references - and I wish there had been citations so I could test the author’s claims.
Also, no comment on whether these constitute made-up citations, but (courtesy of an LLM, each confirmed by me):
Silverman (#3): Wrong author. That essay is by Stephanie S. Tolan, written for Hoagies' Gifted Education Page in February 1999.
Dana Winkler & Alan Voight (#4): The paper is real but the authors are named Daniel Winkler and Adam Voight. This doesn’t sound like your friend actually wrote this article…
Dodson (#1): article's actual title is "Emotional Regulation and Rejection Sensitivity," Attention Magazine, October 2016.