Enlarge / A woman wearing a sweatshirt for the QAnon conspiracy theory on October 11, 2020 in Ronkonkoma, New York. (credit: Stephanie Keith | Getty Images)

Belief in conspiracy theories is rampant, particularly in the US, where some estimates suggest as much as 50 percent of the population believes in at least one outlandish claim. And those beliefs are notoriously difficult to debunk. Challenge a committed conspiracy theorist with facts and evidence, and they'll usually just double down—a phenomenon psychologists usually attribute to motivated reasoning, i.e., a biased way of processing information.

A new paper published in the journal Science is challenging that conventional wisdom, however. Experiments in which an AI chatbot engaged in conversations with people who believed at least one conspiracy theory showed that the interaction significantly reduced the strength of those beliefs, even two months later. The secret to its success: the chatbot, with its access to vast amounts of information across an enormous range of topics, could precisely tailor its counterarguments to each individual.

"These are some of the most fascinating results I've ever seen," co-author Gordon Pennycook, a psychologist at Cornell University, said during a media briefing. "The work overturns a lot of how we thought about conspiracies, that they're the result of various psychological motives and needs. [Participants] were remarkably responsive to evidence. There's been a lot of ink spilled about being in a post-truth world. It's really validating to know that evidence does matter. We can act in a more adaptive way using this new technology to get good evidence in front of people that is specifically relevant to what they think, so it's a much more powerful approach."

Enlarge / Researchers say that Dungeons & Dragons can give autistic players a way to engage in low-risk social interactions. (credit: Nicole Hill/CC BY-SA 4.0)

Since its introduction in the 1970s, Dungeons & Dragons has become one of the most influential tabletop role-playing games (TRPGs) in popular culture, featuring heavily in Stranger Things, for example, and spawning a blockbuster movie released last year. Over the last decade or so, researchers have turned their focus more heavily to the ways in which D&D and other TRPGs can help people with autism form healthy social connections, in part because the gaming environment offers clear rules around social interactions. According to the authors of a new paper published in the journal Autism, D&D helped boost players' confidence with autism, giving them a strong sense of kinship or belonging, among other benefits.

“There are many myths and misconceptions about autism, with some of the biggest suggesting that those with it aren’t socially motivated, or don’t have any imagination," said co-author Gray Atherton, a psychologist at the University of Plymouth. "Dungeons & Dragons goes against all that, centering around working together in a team, all of which takes place in a completely imaginary environment. Those taking part in our study saw the game as a breath of fresh air, a chance to take on a different persona and share experiences outside of an often challenging reality. That sense of escapism made them feel incredibly comfortable, and many of them said they were now trying to apply aspects of it in their daily lives.”

Prior research has shown that autistic people are more likely to feel lonely, have smaller social networks, and often experience anxiety in social settings. Their desire for social connection leads many to "mask" their neurodivergent traits in public for fear of being rejected as a result of social gaffes. "I think every autistic person has had multiple instances of social rejection and loss of relationships," one of the study participants said when Atherton et al. interviewed them about their experiences. "You've done something wrong. You don't know what it is. They don't tell you, and you find out when you've been just, you know, left shunned in relationships, left out.... It's traumatic."

Enlarge / As female macaques age, the size of their social network shrinks. (credit: Jon G. Fuller/VW Pics/Universal Images Group via Getty Images)

Walnut was born on June 3, 1995, at the start of what would become an unusually hot summer, on an island called Rum (pronounced room), the largest of the Small Isles off the west coast of Scotland. We know this because since 1974, researchers have diligently recorded the births of red deer like her, and caught, weighed and marked every calf they could get their hands on—about 9 out of every 10.

Near the cottage in Kilmory on the northern side of the island where the researchers are based, there has been no hunting since the project began, which allowed the deer to relax and get used to human observers. Walnut was a regular there, grazing the invariably short-clipped grass in this popular spot. “She would always just be there in the group, with her sisters and their families,” says biologist Alison Morris, who has lived on Rum for more than 23 years and studies the deer year-round.

Walnut raised 14 offspring, the last one in 2013, when she was 18 years old. In her later years, Morris recalls, Walnut would spend most of her time away from the herd, usually with Vanity, another female (called a hind) of the same age who had never calved. “They were often seen affectionately grooming each other, and after Walnut died of old age in October 2016, at the age of 21—quite extraordinary for a hind—Vanity spent most of her time alone. She died two years later, at the grand age of 23.”

Enlarge / Dr. Ann Burgess helps the FBI catch serial killers in Hulu's Mastermind: To Think Like a Killer. (credit: YouTube/Hulu)

Fans of the Netflix series Mindhunter might recall the character of Dr. Wendy Carr (Anna Torv), a psychologist who joins forces with FBI criminal profilers to study the unique psychology of serial killers in hopes of more effectively catching them. But they might not know about the inspiration for the character: Dr. Ann Wolbert Burgess, whose long, distinguished career finally gets the attention it deserves in a new documentary from Hulu, Mastermind: To Think Like a Killer.

Burgess herself thought it was "fun" to see a fictional character based on her but noted that Hollywood did take some liberties. "They got it wrong," she told Ars. "They made me a psychologist. I'm a nurse"—specifically, a forensic and psychiatric nurse who pioneered research on sex crimes, victimology, and criminal psychology.

Mastermind should go a long way toward setting things right. Hulu brought on Abby Fuller to direct, best known for her work on the Chef's Table series for Netflix. Fuller might seem like a surprising choice for making a true crime documentary, but the streamer thought she would bring a fresh take to a well-worn genre. "I love the true crime aspects, but I thought we could do something more elevated and cinematic and really make this a character-driven piece about [Ann], with true crime elements," Fuller told Ars.