Photo of John Cook

John Cook

George Mason University
United States
Email john [at] skepticalscience [period/dot] com

John Cook obtained his PhD at the University of Western Australia, studying the cognitive psychology of climate science denial. His research focus is understanding and countering science denial, using critical thinking and inoculation to build public resilience against misinformation.

John Cook’s website.


Stephan Lewandowksy, John Cook, & Ulrich K.H. Ecker et al. 2020. “The Debunking Handbook 2020,” Center for Climate Change Communication, George Mason University (2020).

Sojung Claire Kim, Emily K. Vraga, & John Cook. 2020. “An Eye Tracking Approach to Understanding Misinformation and Correction Strategies on Social Media: The Mediating Role of Attention and Credibility to Reduce HPV Vaccine Misperceptions,” Health Communication (July 2020).

Emily K. Vraga, Sojung Claire Kim, John Cook, & Leiticia Bode. 2020. “Testing the Effectiveness of Correction Placement and Type on Instagram,” The International Journal of Press/Politics (May 2020).

John Cook. 2019. “Understanding and countering misinformation about climate change.” In Handbook of Research on Deception, Fake News, and Misinformation Online, Hershey, PA: IGI-Global (2019).

John Cook. 2019. “Turning climate misinformation into an educational opportunity.” In Strategic Climate Change Communications: Effective Approaches to Fighting Climate Denial Wilmington, DE: Vernon Press (October 2019).

Emily K. Vraga, Sojung Claire Kim, & John Cook. 2019. “Testing Logic-based and Humor-based Corrections for Science, Health, and Political Misinformation on Social Media,” Journal of Broadcasting & Electronic Media (September 2019).

John Cook, Peter Ellerton, & David Kinkead. 2018. “Deconstructing climate misinformation to identify reasoning errors,” Environmental Research Letters (February 2018).

Stephan Lewandowsky, Ullrich K. H. Ecker, & John Cook. 2017. “Beyond Misinformation: Understanding and Coping with the “Post-Truth” Era,” Journal of Applied Research in Memory and Cognition (December 2017).

John Cook, Stephan Lewandowsky, & Ullrich K. H. Ecker. 2017. “Neutralizing misinformation through inoculation: Exposing misleading argumentation techniques reduces their influence,” PLOS ONE (May 2017)

John Cook et al. 2013. “Quantifying the consensus on anthropogenic global warming in the scientific literature,” Environmental Research Letters (May 2016).

John Cook et al. 2016. “Consensus on consensus: a synthesis of consensus estimates on human-caused global warming,” Environmental Research Letters (April 2016).

John Cook, Ullrich K.H. Ecker, & Stephan Lewandowsky. 2015. “Misinformation and how to correct it,” Emerging Trends in the Social and Behavioral Sciences, Hoboken, NJ: John Wiley and Sons (May 2015).

Media Coverage

John Cook Interviewed on Facebook’s information hub by Joseph Winters. Facebook launched a new climate information hub. Here’s how activists reacted,” Salon, September 20, 2020.

John Cook interviewed about conspiracy theories by Ariel Bogle. The hidden political forces pushing pandemic conspiracies,” ABC Radio National, September 18, 2020.

John Cook interviewed on misinformation by Irina Ivanova. Environmentalists pan Facebook’s new climate change hub,” CBS News, September 16, 2020.

John Cook interviewed on misinformation via Facebook by Jessica Guynn. Facebook says it’s cracking down on climate change misinformation. Scientists say it’s not doing enough,” USA Today, September 15, 2020.

John Cook interviewed on online misinformation by Tristan Kennedy. The Loophole Allowing Climate Change Denial to Spread On Facebook,” VICE, August 21, 2020.

Excerpt from Conspiracy Theory Handbook featured by John Oliver. Coronavirus: Conspiracy Theories,” Last Week Tonight, July 20, 2020.

John Cook quoted on inoculation against conspiracy theories by Kate Yoder. Fake news is killing us. How can we stop it?,” Grist, July 1, 2020.

John Cook interviewed about his research into debunking misinformation by Dave Borlace. Busting Climate Myths: The Psychology of Denial,” Just Have a Think, June 21, 2020.

John Cook quoted on misinformation by Lenora Chu. Who should judge what’s true? Tackling social media’s global impact,” Christian Science Monitor, June 8, 2020.