Reading and the mind: what the evidence actually shows
Key takeaways
Multiple peer-reviewed studies and meta-analyses support reading as beneficial for attention, working memory, and sustained concentration. Literary fiction, specifically, shows consistent — if modest — effects on empathy and Theory of Mind (the ability to understand others’ mental states). Bedtime reading of print material, compared to screen use, is associated with improved sleep onset and melatonin regulation. Bibliotherapy (therapeutic reading) has accumulated reasonable evidence for modest mood and anxiety benefits. Habit formation research supports the micro-habit and context-anchoring approaches recommended for building a reading routine. Most effects are small to moderate in size; the evidence does not support overclaiming, but the overall picture is consistently positive across a range of outcomes.
Reading is one of the most studied complex human behaviours in cognitive science. It is also one of the most accessible. This Deep Dive examines the research evidence across five main domains: cognitive function and attention, empathy and social cognition, emotional wellbeing, sleep, and the science of habit formation as it applies to reading. It is the companion to the Open Post, which provides the accessible overview and practical guidance.
How researchers study reading and wellbeing
Reading research draws on several methodological traditions, each with distinct strengths and limitations.
Randomised controlled trials (RCTs) assign participants to reading or control conditions and measure outcomes at defined points. These are the most rigorous design for establishing causation. In the reading literature, RCTs are common in studies of bibliotherapy (therapeutic reading interventions) and in experimental fiction studies comparing reading-exposed and control groups on empathy measures.
Experimental cognitive studies typically measure performance on validated tasks — sustained attention tests, working memory assessments, reading comprehension batteries — and examine how these correlate with reading habits or improve following reading interventions.
Longitudinal observational studies track reading behaviour and cognitive or health outcomes over time in large populations. These can detect associations across decades but cannot rule out confounding factors: people who read more may differ from non-readers in socioeconomic status, educational background, lifestyle, and health in ways that independently predict outcomes.
Meta-analyses pool data from multiple studies to produce more precise effect size estimates. Several high-quality meta-analyses now exist specifically addressing fiction reading and social cognition, and bibliotherapy and psychological wellbeing — making this a reasonably well-characterised evidence base, even if individual study quality varies.
Cognition: attention, working memory, and comprehension
The relationship between reading and cognitive function is, in one sense, tautological: reading comprehension itself requires sustained attention, working memory, and inferential reasoning. What is more interesting is the evidence that regular reading may strengthen these capacities beyond the act of reading itself.
KEY RESEARCH
Segal, D. (2023). Sustained attention plays a critical role in reading comprehension of adults with and without ADHD. Learning and Individual Differences. https://doi.org/10.1016/j.lindif.2023.102300
Sustained attention — the ability to maintain focus on a single task over time — is both a prerequisite for reading and a capacity that reading appears to develop. The relationship is bidirectional: readers with stronger sustained attention comprehend more effectively, and practices that train sustained attention (which reading inherently requires) may strengthen it over time. This is consistent with a broader body of cognitive training research showing that repeated engagement with demanding attentional tasks produces durable improvements.
KEY RESEARCH
Macdonald, K., Barnes, M., Miciak, J., Roberts, G., Halverson, K., Vaughn, S., & Cirino, P. (2020). Sustained attention and behavioral ratings of attention in struggling readers. Scientific Studies of Reading, 25, 436–451. https://doi.org/10.1080/10888438.2020.1826950
Importantly, critical thinking — specifically inductive and deductive reasoning — has been identified as a significant predictor of reading comprehension in adolescents, independent of vocabulary and fluency: reading and higher-order reasoning are mutually reinforcing. Skilled readers develop stronger reasoning abilities; stronger reasoning supports better comprehension and engagement with complex material.
Working memory — the ability to hold and manipulate information in mind while processing new information — is closely linked to reading ability in children and adults. The demands that narrative and argumentative text place on working memory (tracking characters, premises, earlier developments in an argument) may constitute a form of practice for this capacity.
Important caveat: Most of the cognitive evidence is cross-sectional or correlational. While the mechanisms are plausible and the associations robust, establishing that reading causes improvements in attention or working memory — rather than simply being associated with pre-existing cognitive strength — requires carefully designed longitudinal or experimental research that is still relatively sparse in adults.
Empathy and Theory of Mind: what fiction does differently
One of the most interesting and contested questions in reading research concerns fiction specifically: does reading literary fiction increase empathy and social understanding? The evidence here is real but requires careful interpretation.
KEY RESEARCH
Kidd, D., & Castano, E. (2013). Reading literary fiction improves Theory of Mind. Science, 342, 377–380. https://doi.org/10.1126/science.1239918
This influential 2013 Science paper demonstrated that participants randomly assigned to read excerpts from literary fiction — as opposed to popular fiction, nonfiction, or nothing — showed improved performance on measures of Theory of Mind (ToM): the ability to infer others’ mental states, beliefs, and intentions. The proposed mechanism is that literary fiction, which typically foregrounds complex, ambiguous characters, requires readers to actively construct the inner worlds of others in ways that popular fiction (which tends toward more predictable character types) does not.
KEY RESEARCH
Wimmer, L., Currie, G., Friend, S., Wittwer, J., & Ferguson, H. (2024). Cognitive effects and correlates of reading fiction: two preregistered multilevel meta-analyses. Journal of Experimental Psychology: General. https://doi.org/10.1037/xge0001583
A 2024 meta-analysis synthesising this literature found that fiction reading produces small but reliable gains in empathy and social cognition. The effects are consistent across multiple studies and measurement approaches, though the effect sizes are modest. This matters: the evidence supports the claim that fiction reading benefits social understanding, but the magnitude of the effect should not be overstated.
KEY RESEARCH
Dodell-Feder, D., & Tamir, D. (2018). Fiction reading has a small positive impact on social cognition: a meta-analysis. Journal of Experimental Psychology: General, 147, 1713–1727. https://doi.org/10.1037/xge0000395
Qualitative research adds texture to the quantitative picture. Interviews with older adults who are regular fiction readers describe the experience of inhabiting characters’ perspectives as contributing to a felt sense of greater social understanding and emotional richness in their own relationships. Adolescent readers report that fiction helps them understand experiences very different from their own — and that this understanding carries into how they relate to people in their daily lives.
Important caveat: The Kidd and Castano (2013) findings have been subject to replication difficulties in some follow-up studies. The meta-analytic evidence now available suggests a genuine effect exists, but is smaller and more context-dependent than the original paper implied. The quality of the fiction, the reader’s engagement with it, and the measurement approach all moderate the outcome.
Emotional wellbeing: bibliotherapy and mood
Bibliotherapy — the therapeutic use of reading, either self-directed or guided by a practitioner — has a long clinical history and a growing evidence base.
KEY RESEARCH
Monroy-Fraustro, D., Maldonado-Castellanos, I., et al. (2021). Bibliotherapy as a non-pharmaceutical intervention to enhance mental health in response to the COVID-19 pandemic: a mixed-methods systematic review and bioethical meta-analysis. Frontiers in Public Health, 9. https://doi.org/10.3389/fpubh.2021.629872
This systematic review found that reading-based interventions were associated with meaningful reductions in stress, anxiety, and depressive symptoms across a range of populations and settings. Effect sizes were generally moderate. Importantly, the review highlighted that personalised selection of reading material — matching the content to the individual’s emotional needs and preferences — was associated with stronger outcomes. This is consistent with the clinical principle that engagement, not mere exposure, drives therapeutic benefit.
KEY RESEARCH
Carney, J., & Robertson, C. (2022). Five studies evaluating the impact on mental health and mood of recalling, reading, and discussing fiction. PLoS ONE, 17. https://doi.org/10.1371/journal.pone.0266323
Carney and Robertson (2022) conducted five studies examining the effects on wellbeing of recalling, reading, and discussing fictional narratives. Reading fiction was associated with improved mood and a reduction in feelings of social exclusion. The effect was particularly notable for individuals who felt lonely or disconnected, suggesting that the perspective-taking and social simulation that fiction provides may be especially valuable when real social contact is limited.
Older adults consistently report that fiction reading supports positive emotional states, a sense of belonging, and continued personal growth — benefits that are not confined to any particular genre but appear to be driven by engagement with narrative and character.
Important caveat: Bibliotherapy evidence is strongest in guided, therapeutic contexts — typically involving a practitioner who helps select and discuss reading material. Self-directed reading, while likely beneficial, has a less extensive controlled evidence base; most mood-related claims are based on qualitative or single-study evidence and require broader replication.
Sleep: print books versus screens
The sleep-related benefits of reading are among the most directly and robustly evidenced in this area, particularly when the comparison is between print reading and screen use before bed.
KEY RESEARCH
Höhn, C., Schmid, S., Plamberger, C., Bothe, K., Angerer, M., Gruber, G., Pletzer, B., & Hoedlmoser, K. (2021). Preliminary results: the impact of smartphone use and short-wavelength light during the evening on circadian rhythm, sleep and alertness. Clocks & Sleep, 3, 66–86. https://doi.org/10.3390/clockssleep3010005
Short-wavelength (blue) light emitted by smartphone and tablet screens suppresses melatonin production and delays circadian phase — in effect, telling the brain it is earlier in the day than it is. Print books emit no such light. This straightforward physiological mechanism means that reading printed material before bed does not carry the sleep-disruptive risk associated with screen use, and may actively support sleep onset by providing a cognitively engaging but physiologically neutral activity during the wind-down period.
KEY RESEARCH
Sella, E., Palumbo, R., Di Domenico, A., & Borella, E. (2022). How emotions induced by reading influence sleep quality in young and older adults. Aging & Mental Health, 27, 1812–1820. https://doi.org/10.1080/13607863.2022.2138266
Sella et al. (2022) found that the emotional valence of what is read before sleep matters as well as the format. Reading material with positive emotional content was associated with shorter sleep latency (time taken to fall asleep) and better subjective sleep quality in both younger and older adults. Highly arousing or distressing content had the opposite effect. This suggests that content selection, not just the act of reading itself, influences the sleep benefit.
KEY RESEARCH
Ricci, C., Ordnung, M., Rothenbacher, D., & Genuneit, J. (2024). Substituting book reading for screen time benefits preschoolers’ sleep health. Nature and Science of Sleep, 16, 315–324. https://doi.org/10.2147/nss.s448736
Even in young children, substituting book reading for evening screen time improved multiple domains of sleep health, including sleep onset time and anxiety around sleep. The mechanism appears consistent across age groups: the replacement of stimulating, light-emitting screen content with calm, narrative-focused print engagement supports the physiological and psychological transition toward sleep.
Building the habit: what the science of behaviour change supports
Reading regularly is a behaviour, and like all behaviours, it is governed by the principles of habit formation. The practical strategies in the Open Post — start small, anchor to existing routines, reduce friction, personalise content — are not simply common sense. They are directly supported by the behavioural science literature.
KEY RESEARCH
Lally, P., & Gardner, B. (2013). Promoting habit formation. Health Psychology Review, 7, S137–S158. https://doi.org/10.1080/17437199.2011.603640
Habit formation research consistently identifies context stability as a critical variable. Repeating a behaviour in the same context — same time, same place, same preceding action — gradually makes it automatic and less dependent on conscious intention or willpower. This is the mechanism behind ‘habit stacking’: attaching a new behaviour (reading) to an existing one (morning coffee, commute, lights out) creates a reliable contextual cue that reduces the friction of initiation.
KEY RESEARCH
Zhu, Y., Long, Y., Wang, H., Lee, K., Zhang, L., & Wang, S. (2024). Digital behaviour change intervention designs for habit formation: systematic review. Journal of Medical Internet Research, 26. https://doi.org/10.2196/54375
Self-monitoring — gently tracking reading progress — is supported by behaviour change research as an effective strategy for sustaining habits. The mechanism is motivational: seeing evidence of progress reinforces identity (‘I am someone who reads’) and provides mild but genuine reward that sustains the behaviour. Importantly, the research recommends gentle rather than ambitious tracking goals, as overly demanding targets are associated with abandonment.
The recommendation to read what you enjoy is not simply a matter of preference — it reflects a well-evidenced principle: intrinsic motivation (doing something because it is inherently rewarding) produces more durable behaviour change than extrinsic motivation (doing it to achieve an external goal). A reading habit built on genuine enjoyment is far more likely to persist than one built on duty.
Audiobooks: are they equivalent?
The question of whether audiobooks count as reading — and whether they confer the same benefits — is increasingly well-studied.
KEY RESEARCH
Wells, E., Gunn, K., Velasquez, D., Kaeding, J., & Hutchinson, A. (2024). A bibliotherapy intervention to improve emotional wellbeing during cancer treatment: a pilot study. Journal of Psychosocial Oncology Research and Practice, 7. https://doi.org/10.1097/or9.0000000000000154
Research on bibliotherapy during illness — including cancer treatment, where fatigue and cognitive difficulties often prevent conventional reading — has found that audiobooks can deliver equivalent emotional and psychological benefits to print reading. The key active ingredient appears to be engagement with narrative and character, not the specific sensory modality through which the text is encountered. For people for whom conventional reading is difficult, audiobooks are not a lesser substitute but a fully legitimate alternative.
The practical implication is important: the reading habit, broadly defined, is the goal. The format should be whatever makes sustained, enjoyable engagement with text most accessible.
What the evidence does not support
It is worth being clear about the limits of the current evidence, in keeping with the principle that honest communication of research — including its uncertainties — is more useful than overclaiming.
The evidence does not support strong causal claims about reading preventing cognitive decline or dementia. While there is promising observational evidence linking high levels of lifelong reading to better cognitive ageing, the causal direction is not established. People with stronger baseline cognitive function may simply read more; reading itself may not be the protective factor.
The evidence for emotional wellbeing benefits from reading is mostly based on self-report measures, short intervention periods, and specific populations. While the direction of effect is consistent and positive, the magnitude is generally small to moderate rather than transformative.
Claims about reading dramatically improving vocabulary, general knowledge, or communication skills for the average adult — while plausible and consistent with mechanistic reasoning — are not as directly evidenced by controlled research as the attention, empathy, and sleep benefits described above.
Bringing it back to The New 5-a-Day
Me-Time is Pillar Four of The New 5-a-Day, and the evidence for reading sits comfortably within what this pillar is designed to support: low-effort, evidence-grounded, personally meaningful practices that create genuine moments of rest and recovery in a demanding day.
The research portrait of reading as a health behaviour is not one of dramatic transformation but of reliable, cumulative benefit across several domains. Its most evidenced effects — on attention and sustained focus, on empathy and social cognition via literary fiction, on sleep when used in place of screens, and on mood when applied therapeutically — are meaningful and consistent. Its accessibility — essentially free, available in multiple formats, scalable to any available time — makes it unusual among evidence-based wellbeing habits.
That the most important predictor of a sustainable reading habit is enjoyment is not a limitation of the evidence. It is, from a public health perspective, rather good news.
A note on medical advice: This Deep Dive is intended for readers who want to engage with the evidence in more depth. It does not replace professional medical or psychological advice. If you are managing anxiety, depression, insomnia, or other health conditions, please speak to your GP or a qualified health professional.
Want to read further? Full citations for all research referenced in this post are available in the accompanying Reference List.
