The Dunning-Kruger effect – a cognitive bias where individuals with limited knowledge overestimate their abilities, while those with more expertise tend to underestimate theirs – finds a vivid illustration on platforms like HopNews. Originally identified by psychologists David Dunning and Justin Kruger, this phenomenon has taken on new dimensions in the realm of social media, where everyone’s opinion can find an audience, and algorithms give priority to those that post the most.
In 1999, psychologists David Dunning and Justin Kruger performed a series of experiments that highlighted how individuals with lower ability at certain tasks overestimate their abilities, while those with higher ability tend to underestimate theirs. Their research was published in the article “Unskilled and Unaware of It: How Difficulties in Recognizing One’s Own Incompetence Lead to Inflated Self-Assessments” in the Journal of Personality and Social Psychology in 1999. Their work also showed that with training, people could more accurately evaluate their skills.

HopNews offers a case study on how the Dunning-Kruger effect permeates online discourse. Within our comment threads, it’s not uncommon to find individuals confidently presenting opinions on complex issues, from election laws to obscure legal constructs, despite having limited understanding or expertise. These comments often receive substantial support and agreement, illustrating how social media can amplify overconfidence.
Conversely, experts and well-informed users who share detailed analyses or nuanced perspectives on HopNews sometimes find their contributions overlooked or undervalued. Our format, which favors concise and straightforward commentary, can inadvertently sideline in-depth discussion, with comments lost in the shuffle. This scenario underscores the second facet of the Dunning-Kruger effect, where genuine expertise is underrecognized.
The phenomenon is further exacerbated by the echo chamber effect prevalent on platforms like Facebook, Twitter, and to a lesser extent, HopNews. Users often engage with articles and content that align with their pre-existing beliefs, reinforcing their confidence in their own opinions and minimizing exposure to contradictory information. This selective engagement can cement misconceptions and overconfidence, particularly among those who are least knowledgeable.
An excellent example of this happened this past December, when an AI-generated article identifying Hopkinton as one of the “most peaceful towns” in the US made the rounds on Facebook. The original social share received many likes, reshares and positive comments, exploiting an inherent bias that many people have – the love of their own town. The Dunning-Kruger Effect also explains why Donald Trump continues to be a leading presidential candidate despite only 9 percent of Trump’s statements being “true” or “mostly” true, while 57 percent are “false” or “mostly false” (source).
As social media continues to shape how we access and engage with information, understanding and addressing biases like the Dunning-Kruger effect is crucial. Our hope is that HopNews will continue to play a meaningful role in increasing the quality of public discourse in our town.



Genuine question – maybe it was explained in one of the links but if Candidate A (taking Trumps name out to avoid bias) makes 9% true statements, and 57% false/mostly false statements, how is the other 34% categorized?
The source that was linked provides a rating scale that spans true/mostly true/ half true/mostly false/false/pants on fire. It then links to the public statements made by the candidate and then provides the underlying facts to substantiate the rating.
Reading this trump was the first one who came to mind. He spews lies and yet they believe him. I’ll never ever figure that one out.
1) The wise do not pretend to know what the ignorant are sure of.
2) Corollary: Fools rush in where wise men fear to tread.
3) There is no greater fool than the self-assured expert who is speaking about a completely different field than his own.
4) Knowledge and wisdom are two different things. There are many fools who have a great deal of knowledge, but apply it incorrectly when dealing with the real world. (a.k.a. eggheads).
5) The key to true wisdom is humility: understanding that the more your learn, the more you realize how little you know.
6) “I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the seashore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.” – Sir Isaac Newton
Oh, by the way, Newton lost his shirt in the stock market. But that was many years ago when people were less sophisticated.
AMC Entertainment Stock Price
June 14, 2021 $321.22
February 16, 2024 $4.83
98.5% Decline
And, of course, there is the Peter Wason bias. 😉