U.S. President Donald Trump's deputy press secretary, Sarah Matthews, on Wednesday refuted some accusations made by the niece of the president.

In her upcoming book, "Too Much and Never Enough: How My Family Created the World's Most Dangerous Man," trained clinical psychologist Dr. Mary L. Trump accused the president of paying a fellow student to take his Scholastic Aptitude Test (SAT) to get into Wharton School.

According to the White House, the tell-all memoir contained false information, claiming it was not fact-checked before being rushed into publication. The press secretary also said Donald's relationship with his father was very warm, as reported by the New York Post.

Mary, who earned a master's and a doctoral degree from Adelphi University, authored a 211-page tell-all memoir, where she depicted how a decades-long history of darkness, dysfunction, and brutality turned her uncle into a "reckless leader."

The controversial memoir revealed that Donald enlisted and paid Joe Shapiro to take his SAT after his sister, retired federal judge Maryanne Trump Barry, refused to take it.

The SAT is a standardized test designed to measure basic math, reading, and writing skills. Most colleges and universities in the United States request SAT score results from applicants in order to make admission decisions.

Shapiro's high score for the president later helped him gain admittance to the Wharton business school as an undergraduate, the Independent reported.

Donald's niece has also accused Maryanne of doing the president's college homework when he took the first two years of his undergraduate education at Fordham University. While the retired federal judge did his homework, his grade point average did not put him at the top of his class.

Black Sheep

The president's brother, Fred "Freddy" Trump Jr., the eldest child of Fred Trump Sr., was known as the clan's black sheep. Freddy was a handsome and talkative man, who left his position at a real estate company to pursue his dreams of becoming a pilot. His departure from the family business allowed Donald to ascend in the family business.

According to Mary, the family patriarch sent Freddy to the hospital, where he died alone in 1981 after he suffered from an alcohol-induced heart attack at 42 years old. Donald, she claimed, went to see a movie, as reported by the Business Insider.

Narcissism

In her tell-all book, the 55-year-old psychologist said her uncle meets all nine clinical criteria needed to be a narcissist. However, she also noted that Donald's psychological troubles were far more complicated than narcissism.

"The fact is, Donald's pathologies are so complex and his behaviors so often inexplicable that coming up with an accurate and comprehensive diagnosis would require a full battery of psychological and neurophysical tests that he'll never sit for," she wrote.

Moreover, Mary claimed that the president does not operate according to agendas or principles. She said his "ego" serves as a barrier between him and the real world.

She attributed this to Fred Sr., whose money and power meant the president never had to negotiate by himself, The New York Times reported.

Mary is the first member of the Trump clan to write a book about their secrets. Since late June, her family has pulled all stops to stop the publication of the book.

They cited a confidentiality agreement signed during a dispute over the will of the president's father.

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