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  • Denis Pepin

Trump’s Cognitive Decline: A Threat to the World?

Updated: May 12

Donald Trump in a pensive state,
Donald Trump’s Cognitive Decline: A Threat to the World? (CyberNesco)

Donald Trump, the former president of the United States, has often made headlines for his apparent difficulty with remembering or pronouncing the names of people he has met or worked with. This has raised questions about his mental health and cognitive abilities, especially as he prepares to run for re-election in 2024. Some of his name-related gaffes are:

  • On multiple occasions, Trump mistakenly referred to the current president as “President Obama”. The first recorded instance occurred during a campaign event in New Hampshire on November 12, 2023. Clips of these gaffes circulated on social media, sparking discussions about Trump’s mental state and attention to detail. Furthermore, on March 2nd, Trump was once again caught in a similar situation during a speech, further fueling speculation about his cognitive abilities. Trump confuses the name of the current president.

  • In 2016, while campaigning for the Republican presidential nomination in New York, Donald Trump incorrectly referred to the September 11 attacks as "7/11." This error raised questions about his attention to detail and grasp of historical events.

  • In 2018, while visiting areas affected by the devastating Camp Fire in Paradise, California, President Trump referred to the town as "Pleasure" instead of Paradise. This error raised concerns about his attention to detail and sensitivity during times of crisis.

  • In 2019, during a White House ceremony, President Trump introduced a Medal of Honor recipient as someone he "just met" even though he had previously presented him with the medal two years earlier. This incident suggested a lapse in memory or attention.

  • In March 2019, he called Tim Cook, the CEO of Apple, “Tim Apple” in a meeting at the White House. He later claimed that he did it to save time and words, but many observers found his explanation unconvincing.

  • In July 2019, he referred to Prince Charles, the heir to the British throne, as “Prince of Whales” in a tweet, confusing him with the marine mammal. He deleted the tweet and corrected it, but not before it went viral and sparked mockery online.

  • In August 2019, he repeatedly called the prime minister of India, Narendra Modi, “Narinder” in a speech at a rally in New Hampshire. He also mispronounced the names of several other countries and leaders, such as Nepal, Bhutan, and Sheikh Hasina.

  • In October 2019, he mispronounced the name of Kurdish commander Mazloum Abdi as “General Mazloom” in a tweet and later claimed he had “saved his life” by brokering a ceasefire in Syria. He also referred to the Kurds as “no angels” and said they were “not a friend” of the US.

  • In 2020, after the Kansas City Chiefs won the Super Bowl, President Trump congratulated the "Great State of Kansas" on their victory, despite the team being based in Missouri. This mistake highlighted a lack of geographic knowledge or memory lapse.

  • In June 2020, he called Sean Parnell, a Republican congressional candidate in Pennsylvania, “Sean Parnett” in a tweet, misspelling his last name. He also endorsed Parnell over the incumbent Democrat Conor Lamb, who he mistakenly called “Connor Lamm”.

  • In November 2020, he called Rudy Giuliani, his lawyer, “Rudy Juliani” in a tweet, mixing up the order of the vowels in his surname. He also praised Giuliani for his “courage” and “vision” in leading his legal challenges to the 2020 election results, which were widely seen as baseless and frivolous.

  • In 2023, in a speech at a Michigan Republican Party conference, Donald Trump claimed that he was named Michigan's "Man of the Year." However, there is no record of such an award being bestowed upon him, raising questions about his memory or truthfulness.

  • In January 2024, Trump confused Nikki Haley, a former UN ambassador and a rival GOP candidate, with Nancy Pelosi, the former speaker of the House, when talking about the Jan. 6 riot. He falsely said that Haley was in charge of security and turned down his offer of 10,000 soldiers.

These are just some of the instances where Trump botched someone’s name, either verbally or in writing. There are many more examples of his name-related gaffes, such as calling Marillyn Hewson, the CEO of Lockheed Martin, “Marillyn Lockheed”, or forgetting the name of Paradise, California, the town that was devastated by a wildfire in 2018. Some critics have suggested that these errors indicate a cognitive decline or a lack of attention to detail, while others have dismissed them as harmless slips of the tongue or typos.

However, some experts have argued that Trump’s name-related gaffes are not isolated incidents, but part of a broader pattern of mental deterioration that affects his memory, judgment, language, and executive function. They have pointed out that Trump has also shown signs of confusion, repetition, incoherence, and delusion in his speeches, interviews, and tweets. They have cited various examples of his cognitive decline, such as:

  • In 2015, Trump stated in an interview that he is "probably the most militaristic person" despite having never served in the military himself. This claim raised questions about his memory or understanding of militarism.

  • In 2016, he claimed to have “the world’s greatest memory” in a deposition for a lawsuit against Trump University, but he cited memory lapses 59 times during the same deposition. 

  • In 2016, during a Republican primary debate, Donald Trump denied ever advocating for Japan and South Korea to develop nuclear weapons, despite previous statements suggesting otherwise. This inconsistency raised questions about his memory or willingness to revise past positions.

  • In 2016, Trump contradicted himself when he denied having any ties to Putin in a debate, after boasting about his close acquaintance with the Russian leader in prior years. This discrepancy cast doubt on his recall or honesty about his past remarks.

  • In 2017, President Trump claimed that he had been featured on the cover of Time magazine more times than any other person. However, this claim was proven to be false, raising concerns about his memory or tendency to exaggerate.

  • In 2017, President Trump claimed to have invented the economic term "prime the pump" during an interview. However, the term has been used in economics for decades before his presidency, suggesting a memory lapse or inaccurate recollection.

  • In 2017, during a speech, President Trump referred to the President of the Virgin Islands as if he were a separate individual, when in fact, he himself is the President of the Virgin Islands as the territory is under U.S. jurisdiction. This incident raised questions about his memory or understanding of the territory's political structure.

  • In 2017, Trump mispronounced the name of Namibia as “Nambia” twice during a speech at the United Nations. He said, “Nambia’s health system is increasingly self-sufficient” and “Africa has tremendous business potential. I have so many friends going to your countries, trying to get rich. I congratulate you. They’re spending a lot of money. But it does — it has tremendous business potential and representing huge amounts of different markets. And for American firms it’s really become a place that they have to go — that they want to go. Six of the world’s ten fastest-growing economies are in Africa. Increasing American trade and investment across diverse industries — including agriculture, energy, transportation, healthcare, travel, and tourism — will further transform lives throughout the continent. Zambia. And I’ve been watching the news. And they’re investing very heavily in Zambia. But Zambia is very rich in natural resources. And they’re doing very well. Nambia, too.”

  • In 2018, Trump confused Nepal and Bhutan with “Nipple” and “Button” during a briefing on South Asia. He also reportedly did not know that they were independent countries and thought they were part of India. He said, “And how does that help us? How does that help us? What is that thing called? Nipple? Button? What is that thing called? And how does that help us?” 

  • In June 2019, he said that the Continental Army “took over the airports” during the American Revolution, which happened more than a century before the invention of airplanes.

  • In 2020, during a press briefing, President Trump falsely claimed that he was the first president to sign the Veterans Choice bill into law, when, in fact, it was signed by President Obama in 2014. This misstep showcased a potential memory lapse.

  • In July 2019, he claimed that his father was born in Germany when he was actually born in New York.

  • In August 2019, he said he wanted to buy Greenland from Denmark and canceled a state visit when the Danish prime minister rejected his offer as “absurd”.

  • In September 2019, he displayed a doctored map of Hurricane Dorian’s projected path, which he had altered with a sharpie to include Alabama after he wrongly tweeted that the state was in danger.

  • In October 2019, he said that the Kurds “didn’t help us in the Second World War, they didn’t help us with Normandy”, implying that they should not expect US support in their fight against Turkey.

  • In November 2019, he tweeted that he had “never seen the Republican Party as Strong as it is today” when his approval rating was at a record low and his party had just lost several key elections.

  • In December 2019, he said that wind turbines cause cancer, kill birds, and make noise that affects people’s health and property values.

  • In January 2020, he said that he ordered the assassination of Iranian general Qassem Soleimani because he was “saying bad things about our country”.

  • In February 2020, he said that the coronavirus would disappear “like a miracle” and that it was “very much under control” in the US when it was spreading rapidly and killing thousands of people.

  • In March 2020, he said that he wanted the country to reopen by Easter, despite the advice of public health experts who warned that doing so would worsen the pandemic.

  • In April 2020, he suggested that injecting disinfectants or exposing the body to ultraviolet light could cure the coronavirus, prompting widespread condemnation and disbelief from medical professionals.

  • In May 2020, he said that he was taking hydroxychloroquine, an unproven and potentially dangerous drug, as a preventive measure against the coronavirus, against the recommendations of the Food and Drug Administration.

  • In June 2020, he said that he asked his officials to slow down the testing for the coronavirus because it made the US look bad and increased the number of cases.

  • In July 2020, he said that he aced a cognitive test that involved identifying an elephant and other animals and challenged Biden to take the same test.

  • In August 2020, he said that he would accept the 2020 election results only if he won, and refused to commit to a peaceful transfer of power if he lost.

  • In September 2020, he said that he deserved the Nobel Peace Prize for his role in brokering deals between Israel and some Arab countries, and accused the media of ignoring his achievements.

  • In October 2020, he said that he was immune to the coronavirus after recovering from his infection, and claimed that he felt “better than 20 years ago”.

  • In November 2020, he refused to concede the 2020 election to Biden and insisted that he won by a landslide, despite having no evidence of widespread fraud or irregularities.

  • In December 2020, he pardoned several of his allies and associates who were convicted of crimes, including Roger Stone, Michael Flynn, and Paul Manafort.

  • In January 2021, he incited a violent mob of his supporters to storm the US Capitol and disrupt the certification of Biden’s victory, resulting in five deaths and dozens of injuries.

  • In 2021, he appeared to suffer a cognitive failure when he confused North Korea with China during a rally in Florida. He said that Kim Jong-un leads 1.4 billion people.


These examples show that Trump’s cognitive decline is not limited to his name-related gaffes, but affects his understanding of history, geography, science, politics, and reality. His cognitive decline poses a serious threat to his own health, as well as the security and stability of the US and the world. Therefore, it is important to monitor his mental state and hold him accountable for his actions. Disclaimer: This is not a definitive diagnosis or a medical opinion. I am only using the publicly available information.



Don’t let the Trump-Abyss Drag You Down!

Trump-Abyss is a blog that reveals the harmful truth of Donald Trump. His actions have undermined democratic principles, provoked unrest, and disseminated false information. He has brought us perilously close to a nuclear conflict, estranged friendly nations, and strengthened adversaries. His conduct has demonstrated a profound disregard for the welfare of society and the principles of justice.

Share the Trump-Abyss blog with your friends, and family, and on social media platforms. The more people are aware of the dangers of a Trump’s presidency, the more they can take action to prevent or mitigate them. Together, we can defend our democracy and our planet from the Trump-Abyss. You have the power to stand up for what is right and fight for a better future. Whether you choose to vote, protest, donate, or educate, you are making a difference in the world.


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