There is a category error in the way most people think about reading fiction. It qualifies as a leisure activity—something you do in the void left after obligations are fulfilled, a pleasant way to disconnect, a retreat from the demands of the real world into the non-existent. Even people who read seriously and widely tend to defend the practice apologetically: it’s my way of relaxing, it’s just something I enjoy. An apology acknowledges intended criticism. Fiction, logically speaking, is not productive. This is not an exercise, language learning or professional development. It is consumption dressed in cultural clothing.
The science on this is fundamentally at odds with this framework, and has been for over a decade. Reading fiction is about building the capacity to model other minds—specifically, reliably, and in ways that distinguish it from comparable activities. Understanding with some degree of certainty that others have beliefs, desires, fears, and intentions different from your own, and navigating the world in light of that understanding. This ability is called theory of mind, and it is one of the most consequential cognitive abilities that humans possess. It underlies most of what makes complex human cooperation possible: relationships, negotiation, parenting, management, medicine, diplomacy. The suggestion that reading fiction is a leisure activity is somewhat of a category mistake given what it accomplishes.
Research
A major study in this field has been published Science By David Kidd and Emanuele Castano in 2013. Over the course of five experiments, they found that reading literary fiction—as opposed to popular fiction, nonfiction, or nothing at all—led to measurable improvements in performance on tests of theory of mind, particularly the Mind’s Eyes Reading test, which assesses the ability to infer emotional states from facial expressions alone. The main variable was the type of fiction: literary fiction, which tends to depict inner life with complexity and ambiguity, improved theory of mind performance in ways that other readings did not.
The study attracted considerable attention and a significant replication effort in the following years. The results of this effort have been used to dismiss the original findings, but are mixed in a way that deserves more careful reading. Three pre-registered replication attempts By Kidd and Castano in 2019, they found two uninformative failures and one successful replication—not a clean vindication, nor a refutation. More important than the replication literature is the correlation between findings usual A lifetime of reading fiction and theory of mind ability is much stronger than the effect of reading a single passage in an experimental setting. The short-term effect is fragile. Not a long term effect.
A study of lifelong exposure to reading consistently found that people who read more fiction throughout their lives perform better on measures of theory of mind, even after controlling for personality variables such as openness to experience, which independently predict both reading habits and social cognition. The association passes specifically cognitive empathy—the ability to understand what another is thinking and feeling—rather than affective empathy, which is the tendency to feel what others are feeling. Reading fiction specifically teaches modeling: the ability to consider and think from another person’s perspective.
What exactly is theory of mind?
Theory of mind is not a single skill. It is a family of abilities that together make social life legible. It involves the ability to understand that other people have different beliefs than you do and reality – a classic test of this, the Sally-Anne task used with children, asks whether the child understands that Sally’s marble will be looked for when Sally is out of the room, not where Anne has moved it, but where Anne has put it. This includes not only beliefs, but also the ability to model intentions, desires, and emotional states. And at more complex levels, it involves the ability to reason about what someone else believes about what you believe—an intrinsic, recursive quality of human social cognition that makes possible everything from bluffing in negotiations to understanding sarcasm in conversation.
Deficits in theory of mind are associated with serious social difficulties; Autism spectrum disorder, characterized among other things by atypical social cognition, is often described in terms of impairment in partial theory of mind. But within the neurotypical range, the capacity for theory of mind changes significantly, and these changes have real consequences for the quality of relationships, professional performance, and the ability to reason ethically—which depends, among other things, on being able to truly imagine the perspective of someone who is not you.
Fiction is, structurally, an exercise in theory of mind. To read a novel is to experience for an extended period of time the perspective of a character whose situation, history, aspirations, and beliefs differ from your own. Literary fiction in particular tends to make this exercise productively difficult: characters are not simple, their motives are not transparent, the narrator can be unreliable. The reader has to do the real work to understand what is going on in another mind. Repeated with hundreds of hours of reading over the years, this work appears to develop basic cognitive skills in ways that transfer to real social situations.
Why is the rest frame important?
If reading fiction creates a capacity central to one’s social function, reading fiction as cultural leisure—optionally, as a reward for productivity rather than an optional part of it—has hard-to-measure but convincingly significant costs. A practical consequence of the framework is that literary reading is among the first things to be discarded when time pressure increases. Adults put it on hold when careers, kids and screens compete for attention. That’s what schools cut when budgets tighten and standardized tests pile into the curriculum. This is what is regarded as the least defensible allocation of limited time in a wide range of institutional contexts.
Meanwhile, the activities that replace leisurely reading—social media, streaming, short-form video—are not theory-of-mind exercises in any comparable sense. They are, for the most part, passive consumers of pre-packaged prospects. Gets a social media feed; the algorithm already selects what you want; Experience rarely requires inhabiting a perspective that is not truly your own. There is no research showing that these activities build theory of mind in the same way that reading fiction does. There is some research suggesting that they can erode the attention span required by sustained fiction reading.
This is not a nostalgic argument about screens being bad and books being good. It’s a more specific claim: that a certain activity—reading fiction intensively for long periods of time, in a way that requires active engagement with characters with complex inner lives—does something to the brain that most other activities don’t, and that the cultural downgrading of that activity has consequences for the cognitive abilities of those who leave it.
The counterargument was fairly stated
The problems of replication in the Kidd and Castano study are real, and intellectual honesty requires acknowledging them. Short-term experimental effects from reading a piece of fiction are not consistent across studies. Theory of mind refinements may be smaller than the original findings proposed, more contingent, or more dependent on individual difference variables.
The more consistent finding—that lifelong fiction reading is associated with better social cognition across multiple countries, in different studies, controlling for relevant confounders—is harder to reject, but also harder to interpret causally. For example, it is possible that people with naturally stronger theory of mind abilities are drawn to fiction rather than to fiction that develops this ability in them. The direction of causation is indeed unclear.
But a practical argument does not require causality. If ordinary fiction readers consistently demonstrate stronger theory-of-mind abilities, then reading fiction is at least a correlate of a highly valued cognitive trait—one worth cultivating, or at least not systematically abandoning. Uncertainty about the mechanism does not change the association. The proposed mechanism—that continuous interaction with complex fictional minds builds a cognitive infrastructure to model real ones—is sufficiently plausible that it is a reasonable bet to accept it as validated for practical purposes.
What does this ask of us?
Changing the reading of fiction as cognitive support rather than leisure does not mean treating it as homework. The enjoyment of fiction is not accidental to its influence—there is evidence of it story transportsthe state of being absorbed in a story is particularly associated with the affective empathy benefits of reading. The badge must be genuine. You cannot read a novel under compulsion and expect the same cognitive results as reading a novel that appeals to you.
What the reframing calls for is something more modest: that we stop classifying reading fiction as a luxury to be rationalized and start viewing it as a practice for conservation—a way to preserve people’s exercise time, sleep, or anything else that has a proven link to their well-being. Time spent reading fiction is not wasted. It is invested in a capacity where the rest of one’s social life—negotiation, caring, cooperation, ethical reasoning, the ability to agree without dehumanizing—is made more difficult.
It’s no small thing to give up another hour of feed.
