When Cambridge University interviewed Jason Arday for one of the most prestigious sociology positions in the world, he was an early career scholar and underqualified, by the school’s own standards.

Cambridge’s requirements, reviewed by The New York Times, called for “an outstanding research record of international stature” and a “proven successful track record” supervising Ph.D. students. Dr. Arday had a modest publication record and had bounced from one university to the next — not staying long enough to oversee a full three-year-or-more doctorate.

Cambridge hired him anyway in 2023, making him, at 37, the university’s youngest Black professor at a time when the school was under pressure to diversify. In doing so, Cambridge thrust him into the international limelight, giving him a platform at one of the world’s elite universities to champion academic diversity and making him a target for critics.

Dr. Arday was found dead in London on Friday, days after resigning his job amid accusations that he had plagiarized chunks of his papers, embellished parts of his recently published memoir and fabricated aspects of his life story. The controversy exploded along cultural fault lines — race, neurodiversity and academic hiring.

In his Aug. 5 resignation later, he wrote, “I no longer wish to feel as though I am living under a constant spotlight, where every aspect of my life is subject to public examination and judgment.” He added, “This is not the end of my work. It is simply the end of this chapter.”

His family said that, since starting at Cambridge, Dr. Arday had faced a campaign of scrutiny intended to undermine him. That became too much for him, they said.

Questions about Dr. Arday’s career are unlikely to end with his death, however, because they were as much about Cambridge as they were as about him. The centuries-old alma mater of Isaac Newton, William Wordsworth and kings and queens, Cambridge now faces deep scrutiny about its decision-making, even from its own faculty.

While Dr. Arday was underqualified for his job, he had a remarkable story: a tale of being diagnosed early with autism and having such significant developmental delays that he spent his entire childhood in a special-needs school. In his account, he did not speak until age 11 or read until 18, yet he managed to earn his doctorate and begin giving keynote speeches on the academic circuit. Also, he had run 30 marathons in 35 days for charity, a feat that would have placed him among the world’s elite athletes.

If, in hindsight, elements of Dr. Arday’s story seemed too good to be true, Cambridge ignored repeated warning signs. A review of internal Cambridge documents and interviews with former colleagues and associates shows that, in addition to passing over more experienced candidates for the job, administrators gushed publicly about Dr. Arday’s scholarship and privately disregarded complaints about his work. They declined to investigate plagiarism concerns and accused his critics of a “vile campaign” to discredit him.

Dr. Arday’s claims about not speaking were false, a former classmate and a speech professional who worked with him told The New York Times. His supposedly remarkable trajectory from nonverbal preteen to Ph.D. had no precedent in medical literature, experts in developmental and speech delays say. That should have set off alarm bells for the Cambridge hiring committee, which included a child psychiatrist who had done research on autism, experts said.

Before Dr. Arday’s death, conservative commentators seized on his fall as evidence of diversity-and-inclusion efforts run amok. They said that Cambridge had been so eager to diversify that administrators let their judgment be clouded.

“They seem to have drunk the D.E.I. Kool-Aid,” Jacob Rees-Mogg, a former Conservative lawmaker in Britain, said early this week on The Telegraph’s “Daily T” podcast.

Prominent academics on the left agree that Cambridge must answer for its decisions. They say that the ordeal has fueled racism and cast unjustified aspersions on accomplished scholars of color.

Cambridge said on Friday that it was “desperately saddened” to hear of Dr. Arday’s death. An administrator, in a letter to the faculty on Tuesday, called the misconduct accusations “an aberration” and “troubling.” A spokesman separately declined to answer a list of questions about his hiring and his time there, citing a planned independent investigation — a difficult inquiry that will likely be made even more uncomfortable following Dr. Arday’s death.

Dr. Arday, for his part, had worked hard to silence any questioning of his credentials. When a journalist for Times Higher Education, a respected academic industry publication, asked about plagiarism last year, a prominent British defamation law firm helped kill the article, the journalist said. Dr. Arday later reported the journalist to the police.

When a scholar from another university questioned his work, Dr. Arday turned the tables and filed a racism complaint with the other school, according to someone with direct knowledge of the complaint. That person, like some others who spoke to The Times, spoke on the condition of anonymity to avoid being dragged publicly into the controversy.

Dr. Arday never squarely addressed the questions of plagiarism and fabrication.

But what is clear from interviews and public records is that elements of the story would have been easy for Cambridge to check.

‘It Just Stretches Credulity’

Dr. Arday, the child of Ghanaian immigrants, grew up in public housing in an ethnically mixed, working-class quarter of South London. Early on, he was identified as having learning difficulties.

Dr. Arday has claimed that before age 11, he could understand language but not speak. In 2022, before interviewing with Cambridge, he said that he had been educated exclusively in a special-needs school “with other pupils that had very severe learning difficulties and physical disabilities.”

In his memoir, published on Tuesday, he gave a different account, saying he attended a mainstream school but spent time sequestered alone in a classroom, again without speaking.

Both tales are false, according to people who knew Dr. Arday as a child and spoke with The Times before his death.

A speech professional who worked closely with the young Dr. Arday recalled him having a language delay but speaking with both children and adults.

One former schoolmate, Jonathan Stewart, recalled Dr. Arday cracking jokes and putting on playful accents in a minivan on the way to church activities as children.

While nonverbal children can certainly learn to speak, even at a late age, the rapid development described by Dr. Arday has no precedent in clinical literature, three experts on autism and speech said.

“In over 40 years of practice and being very acquainted with literature, I’ve never heard of that happening,” said Stephen Camarata, a speech science expert with Vanderbilt Health’s Developmental Disabilities Lab. “It just stretches credulity.”

Cambridge’s Youngest Black Professor

An established chair at Cambridge, a permanently funded position that comes with prestige and research support, is among the academic world’s most sought-after jobs.

Dr. Arday applied for an established chair of education at Jesus College, one of Cambridge’s oldest institutions, dating to the 15th century. The university advertised internationally for the job and convened a panel of nine experts to review the candidates.

The panel selected four finalists, inviting them to Cambridge for two days of interviews. Dr. Arday was up against three more senior scholars, including two women of color, according to a person familiar with the hiring process.

Dr. Arday’s published papers and his thesis had dozens of grammatical errors, along with identical quotes attributed to different people.

At Cambridge, the finalists were asked to submit just one piece of research, according to the person familiar with the process.

It is not clear which piece he submitted, or whether members of the hiring panel reviewed Dr. Arday’s speeches and interviews. If they had, they would have found elements of his story that stretched belief, like the marathon claim, or were demonstrably false, like his public assertion that he had been on the British television series “Seven Up.” (Dr. Arday’s spokesman recently said that the assertion should not have been taken literally.)

Experts said that Cambridge’s hiring panel was well equipped to question Dr. Arday’s very public claims about his childhood. Some committee members had published papers about teaching students with learning disabilities and about inclusion in education.

One influential member of the hiring panel, the child psychiatrist Paul Ramchandani, had published a paper on music therapy for children with autism. Given his expertise, he would have been in position to question Dr. Arday’s assertion that he learned to speak at 11 and read at 18, said Howard Shane, the director emeritus of the Center for Communication Enhancement at Boston Children’s Hospital.

“That should raise a red flag,” he said in an interview early this week. “There’s no question about that.”

Dr. Ramchandani and others on the panel did not respond to requests for comment.

The committee hired Dr. Arday, in a decision that the education department chair described at the time as unanimous. Cambridge’s lengthy hiring announcement highlighted his remarkable personal story, which garnered media coverage on both sides of the Atlantic.

Cambridge had so few Black professors that it was under pressure from faculty and students to diversify. It had set modest targets for increasing applications from people of color for academic posts.

On the BBC, the education department chair, Hilary Cremin, told Dr. Arday that he was “the best in the world in terms of the research you do.” She did not respond to requests for comment.

The First Questions Surface

Three months after Dr. Arday’s hiring, two British scholars, Martyn Hammersley and David Harris, privately wrote to Cambridge, alerting administrators to potential plagiarism in one of Dr. Arday’s papers.

Dr. Cremin, the department chair, replied that she had met with Dr. Arday, and that he had agreed to address concerns in the paper. She also mentioned his “ongoing experiences of direct and indirect racism,” along with “significant health issues” that had affected his work on the paper in question, according to an email, which was first reported on a former professor’s newsletter and the academic integrity website Retraction Watch.

Dr. Harris, whose work has challenged whether racism is ingrained in society, responded by suggesting that Cambridge also review Dr. Arday’s other papers and his thesis. “Prof Arday badly needs critical friends, in my view, not sycophants,” he wrote.

He never got a reply, he said.

Nor did Cambridge act months later after journals appended corrections on two of Dr. Arday’s papers. Then, in September 2025, Times Higher Education sent Cambridge a dossier of more than 60 pages that detailed apparent plagiarism in Dr. Arday’s work.

A reporter and editor at the publication, Jack Grove, had enlisted experts to review Dr. Arday’s thesis.

One of them, David Sanders of Purdue University, told The Times that, going into the review, he knew nothing about Jason Arday. But when Dr. Sanders sat down to analyze the thesis, he concluded it was “extensively plagiarized.”

Cambridge continued to back its star professor, telling Mr. Grove that questions about Dr. Arday’s thesis would have to be addressed by the school that had awarded his doctorate, Liverpool John Moores University. Concerns about his research, Cambridge said, would similarly have to be handled by others. Liverpool John Moores stood by his doctorate.

At Cambridge, faculty members and allies hurriedly drafted a letter in anticipation of Mr. Grove’s article. “The integrity of higher education is at risk if we do not take a stand and speak out against the systematic attempts to erase Black scholarship,” they wrote in the letter, a copy of which was seen by The Times.

But Mr. Grove’s article never ran. Dr. Arday’s lawyers threatened legal action, and Times Higher Education spiked it. Dr. Arday also filed a police complaint against Mr. Grove, which led to a harassment investigation that was later dropped.

A Scandal Erupts

The plagiarism charges burst into public view last month when a former Cambridge scholar, Nathan Cofnas, wrote about them in his newsletter. Dr. Cofnas is known for his work suggesting that Black people were genetically predisposed to be less intelligent than white people. The university had cut ties with him in 2024.

Retraction Watch quickly expanded on Dr. Cofnas’s reporting. But once again, Cambridge defended Dr. Arday, saying he was “the victim of a vile campaign to undermine his credibility, which must stop,” according to an email seen by The Times.

After new questions surfaced, casting doubt on Dr. Arday’s story, he resigned. Cambridge’s tone shifted.

But the fallout from Cambridge’s enthusiastic promotion of Dr. Arday’s story could last for years. “This has really done some harm,” Dr. Camarata, the speech specialist, said before Dr. Arday’s death.

He said that over the years, he heard from families of children with severe autism hoping for a miracle. “I never want to take away anybody’s hope,” he said, “but this story really has created some unreasonable expectations and false hopes, and I hate that.”

Heidi Mirza, an emeritus professor of education at University College London who once mentored Dr. Arday, said in an interview this past week that he had been ill-served by university administrators’ carelessness in their efforts to demonstrate their commitment to diversity.

“He’s a pawn,” she said, “whose ambition made him vulnerable.”

Georgia Gee, Susan C. Beachy and Kitty Bennett contributed research.