Picture a mashup of ChatGPT and the language app Duolingo — but for medical students learning to interview patients. Meet "AI Patient Actor," a teaching-tool-in-progress that Thomas Thesen, a cognitive neuroscientist, is testing on second-year students at Dartmouth's Geisel School of Medicine. In med school, students practice by interviewing actors playing patients. It helps the students learn to make diagnoses and hone their soft skills, like building rapport, counseling and motivation techniques, and learning to ask open-ended questions. Why it matters: Actors are expensive. In rural New Hampshire, where Dartmouth is located, it can be hard to recruit Spanish-speaking ones to roleplay with students who will treat Spanish speakers after graduation. And since opportunities to practice with real humans are infrequent, students get nervous about them. Then came the advent of ChatGPT, the bot that can answer questions. "That's when I got the idea for my teaching, to use this to teach students how to do patient interviewing, clinical diagnoses, differential diagnoses, and then also to give them individualized feedback," Thesen told Erin. How the AI Patient Actor works: Students can pull up the app and type or ask questions aloud in English, Spanish, German or Swahili. "Hi, I'm Dr. X. What brings you to the clinic today?" The ChatGPT4-powered app responds. Instead of referencing ChatGPT's entire knowledge base, the tool is constrained to a patient template created by medical educators. Students continue the conversation, probing for information, ordering tests and exams (with laboratory results provided by the app), until they've landed on a diagnosis and course of treatment. Then the app evaluates their performance and offers feedback. What's next? This is the first semester that Thesen's rolled out the platform in his neuroscience and neurology course, so it hasn't been evaluated. He wants to see: — Did the app behave like a real patient? — Did it stick to the script? — Did it have biases? Thesen said he also wants to know if students who use it develop better interviewing and clinical reasoning skills. Whatever the results, he said he’s not planning to lay off the actors. "It's not taking something away. It's not replacing something. It's adding something,” he said.
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