Review: The Wiley Blackwell Handbook of Transpersonal Psychology

Introduction for feng shui readers

The Wiley Blackwell Handbook of Transpersonal Psychology offers an important scholarly resource and essential reading for feng shui practitioners and for anyone interested in spirituality, religion, wellbeing, and the human relationship with place. Although the handbook does not focus specifically on feng shui, it addresses many of the questions that sit at the heart of traditional practice: how people experience connection between self, place, nature, meaning, consciousness, and transformation.

Classical feng shui understands human life through the dynamic relationship of Heaven, Earth, and Human. This trinity is reflected in the traditional framework of Heaven luck, Earth luck, and Human luck: the conditions into which one is born, the qualities of the environments one inhabits, and the choices, conduct, cultivation, and relationships through which one participates in life. From this perspective, places are not merely physical settings. They are lived environments that may support or constrain health, relationships, purpose, belonging, attention, and wellbeing.

Transpersonal psychology provides a contemporary language for examining these concerns without reducing feng shui to either superstition or interior psychology alone. It investigates consciousness, spiritual experience, contemplative traditions, human transformation, ecological connection, exceptional experience, and the meanings people attach to their environments. Its relevance lies in taking seriously the possibility that homes, workplaces, landscapes, and sacred places can be experienced as psychologically, symbolically, spiritually, and bodily significant.

For feng shui practitioners, the handbook is particularly valuable because it encourages a careful balance. It recognises wisdom traditions and spiritual practices as important sources of knowledge about human flourishing, yet it also calls for cultural sensitivity, methodological rigour, and caution about claims that cannot be empirically demonstrated. This creates space to explore feng shui as a rich tradition of Heaven, Earth, and Human relationship: one that can be respected in its own terms while also examined through environmental psychology, wellbeing research, design, and lived experience.

For the wider public, including those interested in spirituality or religion, the book raises an enduring question: how might people understand experiences of harmony, connection, awe, sacredness, transformation, and belonging without having to choose between uncritical belief and dismissive scepticism? It offers a serious invitation to study these dimensions of human life with openness, intellectual discipline, and respect for cultural and spiritual diversity.

Overview

The Wiley Blackwell Handbook of Transpersonal Psychology, Second Edition, edited by Glenn Hartelius, Jenny Wade, and Harris L. Friedman, is a substantial multi-author academic handbook that surveys contemporary transpersonal psychology as a field concerned with consciousness, exceptional experience, spiritual meaning, human development, and transformative change. It was first published online by Wiley on 20 August 2026. Publisher and contributor information lists it as a 912 page volume, although some retailer metadata provides different pagination; it should therefore be regarded principally as a major reference work rather than a conventional linear textbook.

The volume seeks to provide a more rigorous and inclusive foundation for contemporary transpersonal psychology. Its central intellectual project is to retain the field’s interest in experiences and forms of development that may extend beyond ordinary person-centred functioning, while responding to longstanding criticisms about insufficient empirical grounding, cultural universalism, cultural appropriation, and insufficiently examined metaphysical assumptions. Wiley describes the second edition as giving increased emphasis to empirical inquiry, cultural inclusivity, critique of metaphysical models, altered states research, psychedelic-assisted psychotherapy, transcendent experience, somatic approaches, and expressive arts therapies.

This is not a single argument or conventional monograph. It is an edited collection whose central contribution is to map a contested field, including its historical roots, concepts, methods, phenomena, clinical applications, ethical questions, and social and ecological implications. Its quality and evidential standards will therefore vary among chapters, and individual chapters should be assessed on their own merits.

Bibliographic details
Title: The Wiley Blackwell Handbook of Transpersonal Psychology, Second Edition
Editors: Glenn Hartelius, Jenny Wade, and Harris L. Friedman
Publisher: Wiley Blackwell
First online publication: 20 August 2026
Print ISBN: 9781394215652
Online ISBN: 9781394215683
Book DOI: https://doi.org/10.1002/9781394215683
Amazon paperback: https://amzn.eu/d/0ei54JAg
Amazon Kindle Edition
Reported length: 912 pages in contributor and Google Books information, although some retail metadata differs
Form: Edited, multi-author academic handbook
Likely readership: Undergraduate and postgraduate students, researchers, practitioners, and readers in transpersonal psychology, consciousness studies, spirituality and psychology, and integrative psychotherapy

The editorial team combines work in transpersonal theory and research, consciousness and developmental studies, and measurement. Jenny Wade joins Glenn Hartelius and Harris L. Friedman as a co editor of the second edition, whereas the first edition was edited by Friedman and Hartelius.

Central argument and field position

The overarching position
The handbook argues that psychology should be equipped to study the full range of human consciousness and transformative experience, rather than restricting legitimate inquiry to ordinary cognition, behaviour, psychopathology, or narrowly individual accounts of wellbeing. It addresses experiences that may involve self transcendence, profound meaning, non ordinary states, spirituality, mystical experience, exceptional human experience, and expanded forms of identity or interconnectedness.

A key feature of the second edition is that it does not appear to require a literal metaphysical interpretation of such experiences. An experience can be psychologically real, significant, culturally meaningful, distressing, beneficial, transformative, or clinically relevant without serving as scientific proof of a supernatural realm, a particular religious doctrine, paranormal causation, or a universal spiritual hierarchy. This is an important intellectual development, because it enables psychology to take experiences seriously while retaining critical and methodological discipline.

The book therefore positions transpersonal psychology at the intersection of:

• Consciousness studies
• Humanistic, existential, and developmental psychology
• Psychology of religion and spirituality
• Qualitative, quantitative, and mixed methods research
• Contemplative studies
• Psychedelic research and psychotherapy
• Clinical, counselling, somatic, and expressive arts approaches
• Ecopsychology and person-environment relations
• Cultural, Indigenous, and cross cultural perspectives on selfhood, healing, and transformation

Transpersonal psychology as a field
The handbook treats transpersonal psychology as concerned with psychological phenomena that involve a movement beyond, through, or across conventional individual self identity. Such phenomena can include expanded identity, self-transcendence, altered states, contemplation, compassion, mystical or numinous experience, existential transformation, ecological relation, dreams, exceptional experience, or profound shifts in meaning. It is not reducible to a single spiritual tradition, therapy method, or developmental hierarchy.

“Transpersonal psychology is a transformative psychology of the whole person in intimate relationship with an interconnected and evolving world; it pays special attention to self expansive states as well as to spiritual, mystical, and other exceptional human experiences that gain meaning in such a context.”
Hartelius, G., Friedman, H. L., & Pappas, J. D. (2013, p. 13).

The book’s contemporary orientation is particularly important because older transpersonal literature has at times been criticised for assuming a perennial philosophy, namely that different religious and contemplative traditions essentially describe a single universal spiritual reality. It has also been criticised for presenting metaphysical propositions as though they had been empirically demonstrated. The second edition seeks to address these problems through a more prominent focus on empirical inquiry, psychometrics, qualitative and mixed methods, multicultural perspectives, participatory approaches, and explicit critique of metaphysical models.

Relevance to feng shui
A shorter definition from the handbook’s introductory chapter states: “Transpersonal psychology: An approach to psychology that 1) studies phenomena beyond the ego as context for 2) an integrative/holistic psychology; this provides a framework for 3) understanding and cultivating human transformation” (Hartelius, Friedman, & Pappas, 2013, p. 145). This definition is particularly relevant to feng shui because it does not locate psychological life solely within an isolated individual. Together with the handbook’s wider description of the person as existing in “intimate relationship with an interconnected and evolving world”, it provides a respectful conceptual bridge to feng shui’s Heaven, Earth, and Human framework. Within this framework, wellbeing arises not only from Human luck, such as conduct, relationships, intention, learning, and cultivation, but also from Earth luck, including the living environment, orientation, form, atmosphere, and relationship with place. The definition does not validate specific feng shui principles as empirical facts; however, it supports taking seriously questions about how people experience homes, workplaces, landscapes, and designed environments as psychologically, symbolically, spiritually, and relationally meaningful.

Structure and thematic coverage

Historical roots and evolution
The handbook includes material on traditional roots, the history and evolution of the transpersonal perspective, and continuing debates over how the field should define itself. This historical material places transpersonal psychology in dialogue with humanistic psychology, consciousness studies, psychology of religion, contemplative traditions, developmental theory, psychotherapy, and cultural critique.

Its history is presented not as a smooth progression but as a field containing diverse, sometimes conflicting positions. Some transpersonal approaches have focused on mystical experience, perennial philosophy, or spiritual development. Others have prioritised empirical assessment, scientific credibility, phenomenology, cultural critique, ecology, feminism, participatory inquiry, social justice, or clinical application. The handbook makes these tensions visible rather than simply presenting an unqualified celebration of the field.

Consciousness and altered states
A chapter on Altered Consciousness and Transpersonal Psychology confirms that altered and non-ordinary states remain central to the handbook’s scope. These states can arise through contemplative practice, meditation, spontaneous spiritual experience, dreaming, intense psychological processes, embodied or expressive practices, clinical conditions, or psychedelic substances.

The important question is not simply whether a state is unusual. The handbook’s transpersonal framing asks how an experience should be described, understood, interpreted, assessed, supported, and integrated. It also makes it necessary to distinguish potentially meaningful or transformative experiences from experiences that may be traumatic, destabilising, substance-related, associated with acute distress, or clinically significant.

This provides a useful corrective to two unhelpful extremes:

• Reflexively pathologising every unusual, spiritual, or non-ordinary experience.
• Automatically idealising such experiences as signs of awakening, wisdom, or psychological health.

A responsible transpersonal approach requires attention to context, meaning, functioning, safety, cultural interpretation, and the individual’s own account.

Development, identity, and transformation
The handbook’s theoretical material extends beyond altered states. Its chapters include work on consciousness, psychological energy, transformative development, the interconnected self, psychoanalytic perspectives, participatory theory, and scientific challenges in the field.

The chapter on Measuring Consciousness in the Interconnected Self is particularly important because it represents an attempt to operationalise ideas that are often left at a philosophical or spiritual level. Rather than treating expanded selfhood or relational consciousness solely as abstract concepts, the handbook considers whether they can be defined, assessed, and researched as psychological phenomena.

The book thus shifts attention from isolated peak experiences towards longer-term processes of development, identity change, relationality, ethical orientation, and transformation. This matters because transpersonal psychology is not simply the study of mystical experiences. It is also concerned with how such experiences are interpreted, whether they change everyday life, how they relate to wellbeing or distress, and how they occur within personal, relational, cultural, and environmental contexts.

Spiritual psychology

Is spiritual psychology included?
Yes. Spiritual psychology is explicitly addressed through a chapter entitled Is Transpersonal a Spiritual Psychology? This shows that spirituality is a central concern of the field, but the title itself signals that the relation between the two is debated rather than assumed.

Definition and positioning
Within the handbook’s framework, spiritual psychology may be understood as the psychological study of experiences, practices, values, meanings, relationships, and forms of development that individuals or communities identify as spiritual. It includes, for example:

• Contemplative and meditative practice
• Religious and mystical experience
• Sacred or existential meaning
• Experiences of unity, interconnectedness, or transcendence
• Spiritual development and ethical transformation
• Spiritual crisis or spiritually interpreted distress
• The role of spiritual beliefs and practices in wellbeing, coping, relationships, and psychotherapy

However, transpersonal psychology is positioned as broader than spiritual psychology. Spirituality is an important domain within transpersonal inquiry, but transpersonal psychology also includes altered states, exceptional experiences, consciousness studies, psychometrics, developmental theory, ecological identity, psychotherapy, research methodology, social engagement, and other forms of transformation that may not be explicitly religious or spiritual. A person may, for example, report an expanded sense of identity, deep connection to nature, or a profound shift in life meaning without identifying the experience as religious.

Concept	Position in the handbook
Spirituality	A significant domain of human meaning, experience, practice, value, and development
Spiritual psychology	The psychological investigation of spiritual experiences and their contexts, meanings, outcomes, risks, and potential clinical relevance
Transpersonal psychology	A broader field studying consciousness and transformation, including but not confined to spirituality
Metaphysical claims	Legitimate philosophical, religious, or personal interpretations, but not scientifically established merely because an experience appears transcendent

The handbook therefore treats spirituality as a legitimate object of psychological study while avoiding the requirement that psychology endorse a particular theology, religious doctrine, supernatural mechanism, or universal spiritual hierarchy. Its more critical orientation supports the investigation of spiritual experience without collapsing phenomenological report into metaphysical proof.

Wisdom traditions

Definition in context
The handbook does not appear to provide a single, concise technical definition of wisdom traditions. In the context of transpersonal psychology, the term is best understood as referring to historically developed religious, philosophical, contemplative, ethical, and healing traditions that contain sustained reflections on consciousness, selfhood, suffering, moral cultivation, transformation, and human flourishing.

These traditions may include Hindu, Buddhist, Taoist, Christian mystical, Sufi, Jewish contemplative, Indigenous, Western philosophical, and esoteric traditions. Crucially, they should not be treated as interchangeable. Each has its own cultural, linguistic, historical, ethical, epistemological, and practical context.

Wisdom traditions offer transpersonal psychology:

• Conceptual vocabularies for discussing consciousness, selfhood, suffering, meaning, and transformation
• Contemplative and embodied practices, including meditation, prayer, ritual, ethical discipline, breathwork, movement, and relational practice
• Phenomenological descriptions of mystical, contemplative, embodied, dream-related, healing, and exceptional experiences
• Ethical orientations concerning compassion, responsibility, relationship, non-harm, and human flourishing
• Alternative models of personhood and human environment relation

Position in transpersonal psychology
The handbook treats wisdom traditions as important historical and conceptual resources, not as unproblematic evidence for universal spiritual truths. Their relevance is psychological, experiential, ethical, and cultural. Psychology can investigate how particular traditions and practices are lived, understood, transmitted, embodied, and associated with outcomes such as wellbeing, distress, meaning, identity, ethical orientation, or social relationship.

This perspective supports research questions such as:

• How do contemplative or spiritual practices shape attention, emotion, self-experience, behaviour, relationships, and wellbeing?
• How do participants interpret powerful experiences through particular religious, cultural, or spiritual frameworks?
• What benefits, risks, adverse effects, exclusions, or limitations may accompany particular practices?
• How should researchers distinguish participants’ accounts from researchers’ theoretical or metaphysical explanations?
• How can research avoid reducing complex traditions to isolated techniques stripped of ethical, historical, and cultural context?

The handbook’s multicultural and participatory orientation is therefore crucial. It discourages a simplistic perennialism that treats all traditions as expressions of the same truth, and it cautions against decontextualised borrowing from non-Western, Indigenous, or religious traditions.

Environmental psychology and ecology

Environmental psychology
Environmental psychology does not appear to be a major organising discipline of the handbook, and there is no clear evidence in the available contents of a chapter specifically entitled Environmental Psychology. Nonetheless, its concerns overlap with several transpersonal and ecopsychological themes, including person place relations, environmental identity, attachment to place, nature connection, restoration, wellbeing, environmental values, meaning, and pro environmental action.

The handbook’s principal route into human environment relations is ecopsychology, rather than mainstream environmental psychology. Ecopsychology examines the psychological and sometimes spiritual significance of the relationship between people and the more than human world. It often considers nature as relevant to identity, healing, ethics, belonging, meaning, ecological responsibility, and forms of expanded or ecological selfhood. The second edition includes a chapter titled Ecopsychology, while the first edition contained a chapter titled Ecopsychology and Transpersonal Psychology.

Environmental sciences
Environmental sciences do not appear to be addressed as a major subject in their conventional natural scientific sense. The handbook is not primarily concerned with ecology as a natural science, climate science, environmental engineering, environmental health, earth systems, biodiversity monitoring, pollution, or environmental risk assessment.

The environmental material is instead psychological, philosophical, experiential, cultural, ethical, and practice-oriented. It concerns how people experience, interpret, value, relate to, and act within environments, particularly natural environments.

Ecopsychology
The inclusion of an Ecopsychology chapter makes clear that the handbook does not regard the transpersonal merely as inward, private, or individual. Ecopsychology extends transpersonal concerns to person-environment relations and asks how psychological wellbeing, identity, spiritual meaning, and ecological responsibility may be interrelated.

Ecopsychological perspectives may explore:

• Experiences of kinship, belonging, awe, restoration, or meaning in nature
• The ecological self, in which identity is experienced as extending beyond isolated individual boundaries
• Psychological responses to environmental degradation, ecological loss, or climate-related change
• The place of nature-based and ecotherapeutic practices within wellbeing work
• The relationship between environmental identity, ethical concern, and pro-environmental behavior

For environmental psychology, this offers a supplementary framework rather than a replacement. It is useful for attending to spiritual, symbolic, existential, embodied, and ethical dimensions of environmental experience that may be less prominent in conventional models. However, claims about wellbeing, health, restoration, behaviour, or environmental intervention should continue to be evaluated through robust environmental psychological research and appropriate empirical design.

Relevance to feng shui, design, and wellbeing
For research on feng shui, environmental psychology, design, and wellbeing, the handbook is most useful as a conceptual resource for exploring experiences of place that participants might describe as harmonious, energetic, restorative, sacred, atmospheric, embodied, symbolic, or transformative.

It can help formulate research questions without requiring traditional cosmological claims to be treated as literal scientific facts. A methodologically defensible research position would distinguish among three levels:

Level	Research focus
Lived experience	How people describe their experiences of home, place, design, feng shui, harmony, safety, belonging, atmosphere, and wellbeing
Psychological and environmental correlates	Measurable constructs such as restoration, perceived environmental quality, place attachment, affect, attention, environmental identity, meaning in life, or self-transcendence
Cosmological or metaphysical interpretation	Personal, cultural, traditional, religious, or philosophical explanations that should not automatically be represented as empirically established mechanisms

This distinction is consistent with the handbook’s emphasis on empirical inquiry, cultural inclusivity, critique of metaphysical models, and methodological pluralism. It supports an approach that takes participants’ interpretations seriously while remaining precise about what a study can and cannot establish.

Research methods and evidence

Methodological pluralism
One of the handbook’s strongest features is its attention to research methodology. It includes work relevant to quantitative assessment, qualitative research, mixed methods, neurophenomenology, and the scientific study of anomalous experience.

This is especially important because transpersonal phenomena often contain both measurable and deeply personal dimensions. A score on a scale may describe variation in self-transcendence, spiritual well-being, meaning, or environmental identity, but it cannot by itself explain how an individual understood an experience, what cultural or religious framework informed that interpretation, or whether the experience was beneficial, disruptive, or both.

The handbook’s methodological approach therefore supports combining different forms of evidence. For example, a study of a contemplative, nature-based, or feng shui-related intervention might combine validated psychological measures with interviews, diary methods, environmental observation, phenomenological analysis, and careful documentation of relevant design conditions.

Quantitative research
Quantitative assessment is important because transpersonal and spiritual constructs can otherwise remain rhetorically compelling but operationally unclear. Terms such as transcendence, mystical experience, interconnectedness, spiritual wellbeing, expanded identity, transformation, and ecological selfhood need definition, reliable measurement, evidence of validity, and consideration of cultural appropriateness.

The chapter on Measuring Consciousness in the Interconnected Self is particularly relevant to attempts to operationalise constructs that are often discussed only philosophically. Yet measurement should not be mistaken for proof that a construct has one universal meaning, nor should a scale score substitute for contextual interpretation.

Qualitative and mixed methods research
Qualitative inquiry is especially important for examining lived experience, personal meaning, symbolic interpretation, cultural context, identity change, and processes of transformation. It allows participants to articulate experience in their own terms rather than forcing accounts into pre-existing categories.

Mixed methods are valuable where both pattern and meaning matter. A mixed methods design may identify statistical associations between a practice or environmental condition and psychological outcomes, while qualitative material can explore the mechanisms participants perceive, the role of expectation, social context, personal history, cultural interpretation, and unintended effects.

Neurophenomenology and anomalous experience
Neurophenomenology brings together first-person accounts and neuroscientific investigation. In a transpersonal context, it can support research that takes subjective experience seriously without reducing all meaning to neural activity or, conversely, treating experience as independent of embodiment and biology.

The inclusion of parapsychology and anomalous experience in the handbook should be interpreted cautiously. It establishes such experiences as subjects for systematic inquiry, not as confirmation of any specific paranormal explanation. Researchers need to distinguish carefully among a report of an experience, possible psychological or social correlates, competing explanatory models, and evidence for a particular ontological claim.

Psychotherapy and applied practice

Transpersonal psychotherapies
The handbook includes a chapter titled Transpersonal Psychotherapies, alongside chapters or revised material on somatic and expressive approaches.

Transpersonal psychotherapy generally extends beyond symptom reduction and conventional ego functioning. It may attend to consciousness, meaning, values, spiritual development, self-transcendence, embodiment, creativity, dreams, symbolic material, existential concerns, and transformative experience. Approaches can include dreamwork, imagery, Jungian and depth psychological work, contemplative methods, expressive arts, somatic practices, and careful engagement with spiritual or exceptional experiences.

The aim is not necessarily to induce altered states or promote a particular spiritual worldview. Its more defensible clinical contribution is to enable sensitive, ethically bounded discussion of experiences that may be existentially or spiritually meaningful to a client and which may otherwise be dismissed, misunderstood, or pathologised.

Clinical cautions
The handbook’s inclusion of a practice does not itself establish that the practice is effective, safe, or appropriate for all populations. Nor does it validate metaphysical explanations attached to particular therapeutic methods.

Responsible practice requires:

• Clear informed consent
• Practitioner competence and appropriate supervision
• Cultural and religious humility
• Trauma-informed assessment
• Safeguarding and ethical boundaries
• Attention to acute distress, functional impairment, substance-related effects, and mental health risk
• Referral, collaboration, or clinical escalation when appropriate

The appropriate scholarly distinction is between affirming the reality and importance of an individual’s experience, exploring its psychological meanings, and asserting that a particular spiritual or metaphysical explanation is objectively true.

Psychedelic-assisted psychotherapy
Psychedelic-assisted psychotherapy is specifically identified by Wiley as substantially revised in the second edition. It is situated within a broader consideration of altered consciousness, psychotherapy, mystical type experience, meaning making, integration, and transformation.

The handbook’s transpersonal contribution is likely to be its attention to phenomenology and existential or spiritual meaning. However, this should not be confused with blanket evidence for psychedelic interventions or with proof that psychedelic experience provides privileged access to metaphysical truth. Evidence must be evaluated in relation to specific substances, populations, clinical protocols, contraindications, therapeutic contexts, outcomes, and follow-up periods.

Changes from the first edition

Overall development
The first edition was published in 2013 and edited by Harris L. Friedman and Glenn Hartelius. The second edition, first published online in 2026, adds Jenny Wade as co-editor and is presented by Wiley as a thoroughly revised and expanded account of a changing field.

The central difference is qualitative rather than merely numerical. The second edition appears to shift the centre of gravity towards a more empirically engaged, culturally inclusive, and epistemically restrained transpersonal psychology. It continues to recognise the significance of spiritual, exceptional, and transformative experiences, but it places stronger emphasis on studying them with conceptual clarity, critical reflection, cultural humility, and methodological pluralism.

Comparison table

Dimension	First edition	Second edition
Publication	2013	First published online in 2026
Editors	Harris L. Friedman and Glenn Hartelius	Glenn Hartelius, Jenny Wade, and Harris L. Friedman
General purpose	Foundational survey of transpersonal theories, science, therapy, social issues, ecology, and related topics	Thoroughly revised and expanded synthesis intended to provide a more rigorous and inclusive foundation
Research orientation	Included neurobiology, psychometrics, and scientific perspectives	Increased stated emphasis on empirical inquiry, assessment, research methods, and evidence
Metaphysical assumptions	Included theories that historically intersect with perennial and metaphysical perspectives	Stronger and explicit critique of metaphysical models and metaphysical overreach
Cultural orientation	Included contributions relating to culture, feminism, and social justice	Stronger multicultural representation and greater attention to culturally situated perspectives
Altered states	Covered holotropic states and altered consciousness	Substantially revised coverage of altered consciousness and related developments
Psychedelic work	Addressed psychedelic experience within earlier transpersonal frameworks	Updated attention to psychedelic-assisted psychotherapy and contemporary research developments
Therapeutic material	Included transpersonal psychotherapy and body-oriented approaches	Revised attention to transpersonal psychotherapies, somatic approaches, and expressive arts therapy
Ecology	Included Ecopsychology and Transpersonal Psychology	Includes Ecopsychology, continuing ecological relevance within an updated framework
Life course	Not highlighted in the available first edition information	Includes Transpersonal Approaches in Gerontology
Chapter revision	Original edited collection with contributions from more than 50 scholars	Wiley reports 18 chapters as wholly new or newly authored
Field position	Established a broad overview of the field	More visibly seeks scientific credibility, inclusivity, cultural reflexivity, and critical maturity

The continuing presence of ecopsychology indicates that human nature relationships remain meaningful within transpersonal psychology. The expansion of material on gerontology, expressive arts, somatic practice, psychedelic-assisted psychotherapy, and updated altered states research suggests a wider and more contemporary applied scope.

Critical appraisal

Principal strengths

Breadth and scholarly value
The handbook offers a wide-ranging map of transpersonal psychology across theory, history, research methods, altered and exceptional experience, psychotherapy, development, spirituality, ecology, culture, education, and social relevance. It is particularly useful for postgraduate readers who need to understand the field’s range rather than encounter a simplified or promotional account.

Methodological maturation
The attention to quantitative assessment, qualitative research, mixed methods, neurophenomenology, and scientific critique makes the second edition more useful for research design and methodological reflection than approaches that rely mainly on spiritual testimony or theoretical assertion.

Critical self-reflection
The inclusion of chapters addressing the field’s critiques, the relation of transpersonal psychology to spirituality, science versus romanticism, multicultural representation, and metaphysical assumptions suggests that the volume does not simply advocate for the field. It recognises substantial conceptual, empirical, ethical, and cultural problems that must be addressed.

Cultural and ecological breadth
The book’s multicultural and participatory orientation is an important corrective to the historic tendency of some transpersonal writing to universalise culturally specific concepts of selfhood, consciousness, spirituality, and development. Its ecopsychological material also expands inquiry beyond individual interiority, connecting consciousness and wellbeing to ecological relation and environmental meaning.

Practical relevance
The volume links theoretical questions about consciousness and transformation with applied fields, including psychotherapy, somatic and expressive arts work, psychedelic therapy, education, gerontology, and ecopsychology.

Limitations and cautions

Unevenness in an edited collection
A handbook of this scale will inevitably be uneven. Chapters are likely to differ in theoretical assumptions, evidence standards, terminology, and critical depth. It should be treated as a broad scholarly resource rather than a unitary evidence base.

Ambiguity of central constructs
Terms including transpersonal, spiritual, consciousness, wisdom, self-transcendence, transformation, energy, awakening, and interconnectedness can have different meanings across authors, disciplines, cultures, and traditions. Researchers should define their use precisely and avoid treating such terms as self-explanatory.

Risk of metaphysical overreach
The study of unusual experience is psychologically legitimate. However, the report of an experience does not establish a particular cosmology, supernatural mechanism, paranormal process, or transcendent ontology. The second edition’s critique of metaphysical models is therefore among its most important contributions.

Clinical boundaries
Meaningful spiritual or exceptional experiences can coexist with trauma, acute distress, psychiatric conditions, substance-related effects, or functional impairment. Transpersonal framing must not displace risk assessment, diagnostic evaluation where appropriate, safeguarding, informed consent, or evidence-based care.

Environmental and design applications
The handbook can inform questions about environmental meaning, symbolic experience, nature connection, harmony, atmosphere, and ecological identity. It does not independently establish the efficacy or truth of specific feng shui principles, environmental interventions, architectural claims, or health outcomes. Those claims require direct empirical investigation, ideally incorporating environmental psychology, health psychology, architecture, design research, and relevant environmental science.

Overall assessment

The Wiley Blackwell Handbook of Transpersonal Psychology, Second Edition, is best understood as an ambitious attempt to make transpersonal psychology more intellectually disciplined while retaining its distinctive concern with consciousness, meaning, spirituality, exceptional experience, selfhood, ecological relation, and human transformation. Its central scholarly position is neither that all spiritual claims are true nor that extraordinary experience should be dismissed or reduced away. Rather, it argues that such phenomena should be studied with conceptual clarity, cultural humility, methodological pluralism, ethical care, and epistemic restraint.

Highly recommended
For any work connecting feng shui, environmental psychology, design, wellbeing, transpersonal psychology, and health psychology, its principal value is conceptual and methodological. It can support research into the symbolic, spiritual, embodied, atmospheric, and transformational meanings of place while encouraging clear distinctions between participant experience, measurable psychological or environmental correlates, and metaphysical interpretation. It should be complemented by primary empirical literature and systematic reviews in environmental psychology, health psychology, built environment research, and cross-cultural methodology whenever a project advances specific causal, intervention, or health-related claims.

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