The Digital Thinker: Master Critical Thinking in a World of Information Overload

Jacquelyn R. Hayhurst is a cognitive scientist and educator who has spent the past fifteen years studying how people think, learn, and make decisions in digitally mediated environments. Her research focuses on the intersection of cognitive bias, information architecture, and decision theory, with particular attention to how algorithmic systems shape human reasoning patterns.

She holds a Master's degree in Cognitive Science from the University of California, Berkeley, where her thesis examined the effects of social media feed algorithms on confirmation bias and belief persistence. Her subsequent work has been published in journals including *Cognitive Science*, *Journal of Experimental Psychology: Applied*, and *Behavioural Public Policy*. She has presented her findings at conferences ranging from the Cognitive Science Society to the International Conference on Computational Social Science.

Before focusing on research, Ms. Hayhurst spent eight years as a high school educator, where she developed and taught a pioneering critical thinking curriculum that has since been adopted by school districts in eleven states. That experience shaped her conviction that critical thinking is not an innate talent but a teachable skill, and that the most important interventions happen not in university lecture halls but in the daily habits of ordinary people navigating an extraordinary information environment.

Her writing has appeared in *Wired*, *The Atlantic*, and *Psychology Today*, where her column on digital cognition reaches over two million monthly readers. She has developed digital literacy curricula for the News Literacy Project, consulted with the RAND Corporation on misinformation resilience, and trained educators across the United States in evidence-based critical thinking instruction.

Ms. Hayhurst currently serves as a Senior Fellow at the Center for Digital Cognition at the University of Washington, where she leads a research team studying the long-term effects of algorithm-mediated information consumption on reasoning ability. She lives in Seattle with her partner and two children, all of whom serve as her most honest and demanding critical thinking test subjects. *The Digital Thinker* is her first book.