Reading Literary Fiction Improves Theory of Mind
Source: https://www.science.org/doi/10.1126/science.1239918 ↗
Kidd and Castano's experiments show that reading literary fiction — as distinct from popular fiction or nonfiction — measurably improves theory of mind, the ability to attribute mental states to others.
The finding was published in Science and sparked a productive replication debate that largely confirmed the core result.
For product direction the paper matters because it reframes empathy as a trainable cognitive capacity rather than a personality trait, which changes what you can do about it organisationally.
If your product team struggles to model user intent, the prescription is not "hire more empathetic people" but "create conditions that develop the skill." Short, rigorous, and pairs well with Levy's work on empathy education in engineering and Krznaric's broader argument in Empathy and the Art of Living.
Central argument
Kidd and Castano conducted a series of experiments demonstrating that reading literary fiction — defined by its resistance to easy interpretation and its demand that readers actively infer characters' inner lives — produces measurable, short-term improvements in theory of mind, the cognitive capacity to attribute beliefs, intentions, and emotions to others. Crucially, the effect was specific: popular fiction and nonfiction did not produce the same gains. The core thesis is that literary fiction functions as a simulator for social cognition, not merely a source of emotional resonance.
Critique
The most substantive limitation is the measurement instrument: the studies rely heavily on the 'Reading the Mind in the Eyes' test, which captures a narrow slice of social cognition and has itself been critiqued for conflating emotion recognition with full theory of mind. This raises the question of whether the experiments demonstrate genuine improvement in attributing complex mental states — the kind required to model a user's latent needs — or a more modest, domain-specific perceptual skill that may not transfer to real-world social reasoning. The replication debate, while broadly supportive, also revealed sensitivity to experimental conditions, suggesting the effect size and durability under natural reading conditions remain genuinely uncertain.
Why it matters for product
For a CPO, the paper's most actionable implication is that the empathy deficit common in technically-oriented product teams is a capability gap that can be deliberately closed, not a fixed trait requiring a hiring solution. This reframes onboarding, team rituals, and professional development — exposure to literary fiction, or other practices that force inference about ambiguous mental states, could be embedded as legitimate development alongside user research methods. It also sharpens the diagnostic question when discovery repeatedly misfires: the problem may not be insufficient data about users, but insufficient cognitive infrastructure on the team to interpret it.