Summary
Highlights
Dr. Nathan Walter begins by questioning why people are so susceptible to misinformation, highlighting how certain beliefs, even clearly false ones like the 'vegetable lamb of Tartary' or apricot seeds as a cancer cure, persisted for centuries. He notes that these tendencies are deeply ingrained in human psychology.
Walter explains that memory is often faulty and easily manipulated. He uses examples like famous movie quotes or brand names to demonstrate common memory glitches. He then discusses 'flashbulb memories' (e.g., 9/11), showing that while these vivid memories feel accurate and remain vivid, their actual consistency decreases over time, similar to ordinary memories.
Motivated reasoning explains why people tend to accept information that fits their worldview and challenge information that doesn't. Walter illustrates this with examples of people's beliefs about evolution, climate change, and even crowd sizes at presidential inaugurations, showing how political or religious beliefs can override objective facts. He argues that the need to belong often outweighs the need to be accurate.
Humans are predisposed to storytelling and forming mental models. Walter explains that coherent, even if false, stories are easily adopted. He uses the historical example of Listerine being marketed as a cold cure and how a coherent (though false) mental model is difficult to dislodge, highlighting that simply debunking a part of a story leaves a 'gap' that people tend to fill with the original, coherent (false) narrative.
Walter discusses how fluency (ease of processing) impacts belief and perception. Information that is easy to read or pronounce tends to be perceived as more familiar, trustworthy, and safe. He demonstrates this with an example of different fonts and roller coaster names, and how even the fluency of a person's name can affect their perceived credibility.
Humans have a strong negativity bias, meaning negative information grabs attention more effectively than positive information. This is an innate survival instinct. Walter explains that this bias makes negative misinformation inherently more viral and memorable than positive or corrective information, creating an uphill battle for fact-checkers.
In the Q&A, Walter suggests that to combat misinformation, it might be necessary to 'fight negative with negative' and 'fiction with fiction' (i.e., compelling narratives). He emphasizes the power of personal stories over statistical evidence and discusses the challenges of building trust in an era where traditional media credibility is declining.
Walter differentiates between misinformation (unintentional spread of false info) and disinformation (intentional spread). He suggests that policy changes are needed to disincentivize purposeful disinformation, especially from non-institutional actors who benefit from viral, attention-grabbing content in a 'clicks and views' economy. He also touches on the importance of nuance in classifying groups like 'vaccine hesitant' versus 'vaccine resistant.'
Walter discusses the conditions under which fear appeals are effective: relevance, self-efficacy (belief in one's ability to act), and response efficacy (belief that the action will minimize risk). He contrasts this with social normative appeals, which aim to correct misperceptions about what peers are actually doing, often used on college campuses to address issues like binge drinking.