Altered Traits
Science Reveals How Meditation Changes Your Mind, Brain, and Body
By Daniel Goleman & Richard J. Davidson · 336 pages
Most meditation research is not as solid as you have heard. This book tells you exactly what the science actually shows — and what it does not.
What This Book Is
Daniel Goleman is a psychologist who studied meditation in India as a Harvard graduate student in the early 1970s — before the word “mindfulness” appeared in any scientific journal. Richard Davidson is a neuroscientist at the University of Wisconsin-Madison who has been scanning the brains of meditators since the 1990s, worked directly with the Dalai Lama, and published more than 700 peer-reviewed papers. Together they have spent a combined century inside contemplative science. Altered Traits, published in 2017, is their attempt to tell the truth about what that science actually shows.
The truth, they argue, is both more interesting and more modest than the popular claims suggest. Much of the research on meditation — including some of their own early work — has serious methodological problems: small samples, no active control groups, self-selection bias, researcher enthusiasm contaminating results. They spend a significant portion of the book identifying what is weak, overstated, or simply not yet proven. What remains after that rigorous filtering is still remarkable — and far more useful than the inflated popular version.
The Central Argument: States vs. Traits
The book is organized around a single distinction that most meditation literature ignores. An altered state is what happens during meditation: calm, clarity, reduced mind-wandering, heightened awareness. These are real and measurable, but they are temporary. When the session ends, most of them end too. This is what most mindfulness research measures, and most popular claims are based on.
An altered trait is something different: a permanent change in who you are — how reactive you are to stress, how quickly your nervous system recovers after a threat, how much compassion you feel by default, how clearly you perceive your own mental processes. These changes are visible not during meditation but in baseline measurements taken before any meditation begins. They represent a change in the underlying structure of the brain and nervous system, not a temporary mood.
Goleman and Davidson argue this is what serious, long-term practice actually produces — and that most mainstream mindfulness programs (including many MBSR variants) produce mostly altered states, not altered traits. The difference is primarily one of dosage: a few weeks of daily practice produces real but modest state changes; thousands of hours of practice produce lasting structural changes in the brain.
This is not discouraging. It is clarifying. It tells you what you are getting at each level of practice, and it gives you an accurate picture of what becomes available with sustained commitment over years.
💡 The neuroscience findings that held up under strict review: Long-term meditators show reduced amygdala reactivity to stressors — and crucially, this reduction appears at baseline, before any meditation session begins. Davidson’s lab found that experienced practitioners recover from stress significantly faster than non-meditators. fMRI scans of Tibetan monks with 10,000+ hours of practice showed dramatic gamma wave synchrony during compassion meditation — activity unlike anything previously recorded in a living human brain. Matthieu Ricard, a French monk and molecular biologist with approximately 50,000 hours of practice, produced brain readings that Davidson’s team described as beyond the range of what they had previously thought possible. These are not claims from enthusiasts. They are peer-reviewed findings from one of the world’s leading neuroscience laboratories.
The Buddhist Connection: Where This Research Began
Neither Goleman nor Davidson came to this work as neutral scientists. Both traveled to India and learned meditation directly from Buddhist teachers in the 1970s. Goleman studied with Neem Karoli Baba’s community and spent years practicing Vipassana and Tibetan Buddhist methods. Davidson worked directly with the Dalai Lama from the late 1980s onwards — it was the Dalai Lama who challenged him to stop studying only negative mind states and apply the same rigor to what happens to the mind through intensive practice.
The book is honest about this origin. The “altered traits” hypothesis — that meditation could produce lasting personality changes, not just temporary mood shifts — was their original intuition from the early 1970s, before any neuroimaging existed to test it. They spent 40 years building the technology and methodology to find out whether their intuition was correct. The answer, carefully qualified, is yes.
What they found aligns precisely with what the Buddhist tradition has always claimed: that the goal of practice is not a pleasant meditation session. It is a different kind of person — more compassionate, less reactive, more clearly aware of what is actually happening in the mind moment to moment. The tradition called this transformation. The neuroscience calls it altered traits. They are describing the same thing.
Who Should Read This
🌟 Final Verdict
Altered Traits is the most honest book about meditation science available. It does not tell you meditation will fix everything. It tells you what it actually does, at what level of practice, verified by what quality of evidence. That honesty is more valuable than any number of enthusiastic popular accounts.
Read the Thich Nhat Hanh and Kabat-Zinn books to learn the practice. Read this one to understand what you are building toward and why the science says it is worth the effort. Together, they form the most complete picture of mindfulness available in the English language.
