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There is considerable confusion surrounding the notion of consciousness. This confusion can be partially resolved by clarifying the referents of the word 'consciousness'. Doing so, however, reveals a more insidious problem, namely, the role played by personal beliefs in understanding consciousness. In particular, as revealed by a comprehensive survey, such beliefs range along a material- transcendent dimension, with the choice of notions of consciousness corresponding to materialist, conservatively transcendent, or extraordinarily transcendent positions. Further empirical research has revealed that those with (...) more transcendent beliefs tend to have a more rational and curious approach to the world than those with more materialist beliefs. And, indeed, transcendent beliefs are also associated with greater intelligence. Although the possibility of a developmental sequence from materialist to transcendent beliefs is suggested, given the nature of fundamental beliefs, it does not appear that reconciliation between them is possible. Thus, although the confusion surrounding the study of consciousness can be clarified, the situation giving rise to the confusion cannot be eliminated. (shrink)

Philosophical Psychology, Volume 0, Issue 0, Page 1-5, Ahead of Print.

Abstract An attempt is made to examine the main principles that underlay the ?Rhinean? school of parapsychology. Five such principles are discussed: (1) that psi can best be assessed using quantitative measures and forced?choice tests; (2) that psi is a function of the unconscious with the implication that objective performance alone is important, not the state of mind of the subject; (3) that psi ability is, to some degree, present in everyone; (4) that only those problems deserve attention for which (...) an unambiguous answer is attainable, with the implication that survival research should be shelved indefinitely and (5) that psi is non?physical. These five principles are then reviewed from our present vantage point and all are found to require qualification to a greater or lesser extent. Some critics, however, want to go further and allege that Rhine led psychical research into a blind alley and that the time has come to revert to the earlier investigative tradition. This, we contend, is defeatist, the more especially since the advent of computers has greatly extended the scope and power of the experimental approach. Despite its inherent difficulties, it remains the indispensable mainstay of our continuing efforts to make sense of the paranormal. (shrink)

In agreement with Blair, I favor the idea of dissociative patterns in cognitive performance, even more when it comes to development. However, such dissociations are present not only between fluid cognition and general intelligence, but also within fluid cognition itself. Heterogeneity of executive attention, even when indexed with a single paradigm, is further discussed in relation to anterior cingulate cortex. (Published Online April 5 2006).

Aggleton & Brown argue that the function of the hippocampus and perirhinal cortex can be dissociated along a spatial/nonspatial dimension. They further suggest that this division corresponds to a distinction between episodic and recognition memory. An analysis of the data, however, fails to support the underlying dissociation.

Quartz & Sejnowski's target article concentrates on the development of a number of neural parameters, especially neuronal processes, in the mammalian brain. Data on learning-related changes in spines and synapses in the developing avian brain are consistent with a constructivist interpretation. The issue of an integration of selectionist and constructivist views is discussed.

Contrary to Perruchet & Vinter's self-organizing consciousness (SOC) model, subliminal mere exposure (SME) research indicates that stimuli perceived without awareness produce robust effects. Moreover, SME effects are significantly stronger than mere exposure effects produced by clearly recognized stimuli. The SOC model must be revised to accommodate findings from studies that use affect-based outcome measures.

Philosophical Psychology, Volume 0, Issue 0, Page 1-5, Ahead of Print.

Acknowledg ment is made to the Editors for permission to include these papers in the present volume. FRINTFD IN l.

SHORT ABSTRACT: A number of accounts of the relationship between third-person mindreading and first-person metacognition are compared and evaluated. While three of these accounts endorse the existence of introspection for propositional attitudes, the fourth (defended here) claims that our knowledge of our own attitudes results from turning our mindreading capacities upon ourselves. The different types of theory are developed and evaluated, and multiple lines of evidence are reviewed, including evolutionary and comparative data, evidence of confabulation when self-attributing attitudes, phenomenological evidence (...) of “unsymbolized thinking”, data from schizophrenia, and data from autism. (shrink)

We have shown that FEF lesion-induced extinction could be compensated for by changing the relative temporal onsets of two targets presented on either side of the midline. Monkeys were trained to make saccades to either of two identical visual stimuli presented with various stimulus onset asynchronies (SOA). In intact animals the targets were chosen with equal probability when they appeared simultaneously. After unilateral FEF lesions an SOA of 67–116 msec had to be introduced, with the contralesional target appearing first, to (...) obtain equal probability choice. With a smaller target separation, averaging saccades occurred with highest frequency at similar SOAs. Our findings suggest that neglect may be attributable to more time being required in the damaged hemisphere for converting sensory information into motor responses. (shrink)

Some data concerning visual illusions are hardly compatible with the perception–action model, assuming that only the perception system is influenced by visual context. The planning–control dichotomy offers an alternative that better accounts for some controversy in experimental data. We tested the two models by submitting the patient I. G. to the induced Roelofs effect. The similitude of the results of I. G. and control subjects favoured Glover's model, which, however, presents a paradox that needs to be clarified.

This paper discusses supportive neurological and social evidence for 'collective consciousness', here understood as a shared sense of being together with others in a single or unified experience. Mirror neurons in the premotor and posterior parietal cortices respond to the intentions as well as the actions of other individuals. There are also mirror neurons in the anterior insula and anterior cingulate cortices which have been implicated in empathy. Many authors have considered the likely role of such mirror systems in the (...) development of uniquely human aspects of sociality including language. Though not without criticism, Menant has made the case that mirror-neuron assisted exchanges aided the original advent of self-consciousness and intersubjectivity. Combining these ideas with social mirror theory it is not difficult to imagine the creation of similar dynamical patterns in the emotional and even cognitive neuronal activity of individuals in human groups, creating a feeling in which the participating members experience a unified sense of consciousness. Such instances pose a kind of 'binding problem' in which participating individuals exhibit a degree of 'entanglement'. (shrink)

Abstract In this article, we investigate the merits of an enactive view of cognition for the contemporary debate about social cognition. If enactivism is to be a genuine alternative to classic cognitivism, it should be able to bridge the “cognitive gap”, i.e. provide us with a convincing account of those higher forms of cognition that have traditionally been the focus of its cognitivist opponents. We show that, when it comes to social cognition, current articulations of enactivism are—despite their celebrated successes (...) in explaining some cases of social interaction—not yet up to the task. This is because they (1) do not pay sufficient attention to the role of offline processing or “decoupling”, and (2) obscure the cognitive gap by overemphasizing the role of phenomenology. We argue that the main challenge for the enactive view will be to acknowledge the importance of both coupled (online) and decoupled (offline) processes for basic and advanced forms of (social) cognition. To meet this challenge, we articulate a dynamic embodied view of cognition. We illustrate the fruitfulness of this approach by recourse to recent findings on false belief understanding. Content Type Journal Article Pages 1-23 DOI 10.1007/s11097-011-9223-1 Authors Leon C. de Bruin, Department of Philosophy II, Ruhr-University Bochum, Universitätsstr. 150, 44801 Bochum, Germany Lena Kästner, Department of Philosophy II, Ruhr-University Bochum, Universitätsstr. 150, 44801 Bochum, Germany Journal Phenomenology and the Cognitive Sciences Online ISSN 1572-8676 Print ISSN 1568-7759. (shrink)

The philosophical world is indebted to Alvin Goldman for a number of reasons, and among them, his defense of the relevance of cognitive science for philosophy of mind. In Simulating minds , Goldman discusses with great care and subtlety a wide variety of experimental results related to mindreading from cognitive neuroscience, cognitive psychology, social psychology and developmental psychology. No philosopher has done more to display the resourcefulness of mental simulation. I am sympathetic with much of the general direction of Goldman’s (...) theory. I agree with him that mindreading is not a single system based on a single mechanism. And I admire his attempt to bring together the cognitive neuroscientific discovery of mirror system phenomena and the philosophical account of pretense within a unique theoretical framework of mental simulation. To do so, Goldman distinguishes two types of mindreading, respectively, based on low-level and high-level simulation. Yet, I wonder in what sense they are really two distinct processes. Here, I will confine myself largely to spelling out a series of points that take issue with the distinction between low-level and high-level mindreading. (shrink)

The International Union of Psychological Science ('Union') co-hosted, with the Chinese Psychological Society its 28th International Congress of Psychology ('Congress'). The first Congress was held with the World's Fair in Paris in 1889. In recent decades, they have been held every four years in different parts of the world. The Union has member organizations from 67 nations, representing one half million psychologists. Pretty scary stuff!

What is the connection between mirror processes and mindreading? The paper begins with definitions of mindreading and of mirroring processes. It then advances four theses: (T1) mirroring processes in themselves do not constitute mindreading; (T2) some types of mindreading (“low-level” mindreading) are based on mirroring processes; (T3) not all types of mindreading are based on mirroring (“high-level” mindreading); and (T4) simulation-based mindreading includes but is broader than mirroring-based mindreading. Evidence for the causal role of mirroring in mindreading is drawn from (...) intention attribution, emotion attribution, and pain attribution. Arguments for the limits of mirroring-based mindreading are drawn from neuroanatomy, from the lesser liability to error of mirror-based mindreading, from the role of imagination in some types of mindreading, and from the restricted range of mental states involved in mirroring. “High-level” simulational mindreading is based on enactment imagination, perspective shifts, or self-projection, which are found in activities like prospection and memory as well as theory of mind. The role of cortical midline structures in executing these activities is examined. (shrink)

Ronan Reilly's connectionist simulation both strengthens and advances the theoretical model presented in my 1991 target article, “Language, Tools, and Brain: The Ontogeny and Phylogeny of Hierarchically Organized Sequential Behavior.” Reilly has tested the whole ontogenetic model with a single simulation study explicitly planned for this purpose. His methodology has established that the various components of the theoretical model imply and are compatible with one another. It has also indicated how learning can actualize a pre-established ontogenetic sequence of combining lingusitic (...) symbols and objects. His simulation suggests that the acquisition of linguistic speech may be facilitated by experience with object manipulation, but not vice versa. This hypothesis can and should be empirically tested through research on behavioral development in the two domains. Finally, Reilly has simulated brain architecture, as well as neural learning. His simulation therefore shows how the development of language and object manipulation can result from an interaction between preprogrammed neural architecture (analogous to network architecture) and experience (analogous to the network's training cycles). (shrink)

The first two conferences and books have become touchstones for the field. This volume presents a selection of invited papers from the third conference.

Top-down feedback does not benefit speech recognition; on the contrary, it can hinder it. No experimental data imply that feedback loops are required for speech recognition. Feedback is accordingly unnecessary and spoken word recognition is modular. To defend this thesis, we analyse lexical involvement in phonemic decision making. TRACE (McClelland & Elman 1986), a model with feedback from the lexicon to prelexical processes, is unable to account for all the available data on phonemic decision making. The modular Race model (Cutler (...) & Norris 1979) is likewise challenged by some recent results, however. We therefore present a new modular model of phonemic decision making, the Merge model. In Merge, information flows from prelexical processes to the lexicon without feedback. Because phonemic decisions are based on the merging of prelexical and lexical information, Merge correctly predicts lexical involvement in phonemic decisions in both words and nonwords. Computer simulations show how Merge is able to account for the data through a process of competition between lexical hypotheses. We discuss the issue of feedback in other areas of language processing and conclude that modular models are particularly well suited to the problems and constraints of speech recognition. Key Words: computational modeling; feedback; lexical processing; modularity; phonemic decisions; reading; speech recognition; word recognition. (shrink)

Does scientific psychology have a legitimate role to play in the philosophy of language? For example, is it methodologically permissible for philosophers of language to rely upon evidence from neurological development, experiments about processing, brain scans, clinical case histories, longitudinal studies, questionnaires, etc.? If so, why? These two questions are the focus of this survey. I address them in two stages. It may seem obvious that the science of psychology is relevant. I thus begin by introducing arguments against relevance, to (...) motivate the discussion. I will urge that these arguments ultimately fail, and that the appearance of relevance should be taken at face value. Next, I introduce positive arguments for relevance, with examples. To foreshadow the main conclusion, the methods and results of contemporary cognitive psychology are relevant because there are non-obvious connections, both constitutive and contingent, between language and human psychology. (shrink)

The claim that language is in principle inaccessible to consciousness may look counterintuitive but is not as challenging as finding an answer to the subsequent question of why that must be the case -- if language is a function that is in the service of consciousness and we cannot imagine why language would have existed at all without the existence of consciousness. On the one hand, language is the cognitive capacity that seems best fit to support consciousness in its monitoring (...) and control functions; on the other hand, language learning (learning the rules of one's own language), language structure and language processing turn out upon closer scrutiny to be in principle inaccessible to consciousness. I present a set of arguments in favour of the thesis that language is in principle inaccessible to consciousness on the basis of a set of asymmetries between sentence structure and the structure of consciousness. If the thesis in question is on the right track, we have to face two basic problems. The first deals with linguistics method(s), namely how can we study a very complex mental phenomenon like language if it is not available to introspection? The second problem is related to the question put in the title of this article. The suggested answer is along the lines that inaccessibility of language to consciousness enables a cognitive architecture that can run a Cartesian theatre. (shrink)

A systemic phenomenological model that assumes the movability of the Cartesian cut is proposed and elucidated by means of a single exploratory case study. The model assumes that a continuum from purely psychosomatic disorders to RSPK cases exists. The degree of externalization (locus of control) of the affected person serves as an ordering parameter for the location of the Cartesian cut. It turns out that the dynamics of the disorder develops in four phases, like in the RSPK-model of the MPI. (...) However, in contrast to the decline phase of the RSPK cases (because of the NT-axiom), CER cases lead to petrification of the complaints. (shrink)

Sleep onset is associated with marked changes in behavioral, physiological, and subjective phenomena. In daily life though subjective experience is the main criterion in terms of which we identify it. But very few studies have focused on these experiences. This study seeks to identify the subjective variables that reflect sleep onset. Twenty young subjects took an afternoon nap in the laboratory while polysomnographic recordings were made. They were awakened four times in order to assess subjective experiences that correlate with the (...) (1) appearance of slow eye movement, (2) initiation of stage 1 sleep, (3) initiation of stage 2 sleep, and (4) 5 min after the start of stage 2 sleep. A logistic regression identified control over and logic of thought as the two variables that predict the perception of having fallen asleep. For sleep perception, these two variables accurately classified 91.7% of the cases; for the waking state, 84.1%. (shrink)

Psychology can be based on plans, internally held images of achievement that organize the stimulus-response links of traditional psychology. The hierarchical structure of plans must be produced, held, assigned priorities, and monitored. Consciousness is the operation of the plan-executing mechanism, enabling behavior to be driven by plans rather than immediate environmental contingencies. The mechanism unpacks a single internally held idea into a series of actions. New in this paper is the proposal that language uses this mechanism for communication, unpacking an (...) idea into a series of articulatory acts. Language comprehension uses the plan-monitoring mechanism to pack a series of linguistic events into an idea. Recursive processing results from monitoring one's own speech. Neurophysiologically, the planning mechanism is identified with higher-order motor control. (shrink)

This work offers a comprehensive picture of the dynamic natures of language and consciousness that will interest linguists, psychologists, literary scholars,...

This paper argues for the importance of inner speech in a proper understanding of the structure of human conscious experience. It reviews one recent attempt to build a model of inner speech based on a grammaticization model (Steels, 2003) and compares it with a self-regulation model here proposed. This latter model is located within the broader literature on the role of language in cognition and the inner voice in consciousness. I argue that this role is not limited to checking the (...) grammatical correctness of prospective utterances before they are spoken. Rather, it is a more broadly activity-structuring role, regulating and shaping the ongoing shape of human activity in the world. Through linking inner speech to the control of attention, I argue that the study of the functional role of inner speech should be a central area of analysis in our attempt to understand the development and qualitative character of human consciousness and that modelling can play a central role in that understanding. (shrink)

This volume takes the first step toward building the necessary local bridges.

The contributions to this collection, written in honor of Jacques Mehler, a founder of the field of psycholinguistics, assess the progress of cognitive science.

We define our conscious experience by constructing narratives about ourselves and the people with whom we interact. Narrative pervades our lives--conscious experience is not merely linked to the number and variety of personal stories we construct with each other within a cultural frame, but is subsumed by them. The claim, however, that narrative constructions are essential to conscious experience is not useful or informative unless we can also begin to provide a distinct, organized, and empirically consistent explanation for narrative in (...) relation to consciousness. Understanding the role of narrative in determining individual and collective consciousness has been elusive from within traditional academic frameworks. This volume argues that addressing so broad and complex a problem requires an examination from outside our insular disciplinary framework. Such an open examination would be informed by the inquiries and approaches of multiple disciplines. Recognition of the different approaches toexamining personal stories will allow for the coordination of how narrative seems (its phenomenology), with what mental labor it does (its psychology), and how it is realized (its neurobiology). Only by overcoming the boundaries erected by multiple theoretical and discursive traditions can we begin to comprehend the nature and function of narrative in consciousness. Narrative and Consciousness brings together essays by exceptional scholars and scientists in the disciplines of literary theory, psychology, and neuroscience to examine how stories are constructed, how stories structure lived experience, and how stories are rooted in material reality (the human body). The specific topics addressed include narrative in the development of conscious awareness; autobiographical narrative, fiction and the construction of self; trauma and narrative disruptions; narrative, memory and identity; and the physiological and neural substrate of narrative. It is the editors' hope that the multidisciplinary nature of this collection will challenge the reader to move beyond disciplinary confines and toward a coherent interdisciplinary dialogue. (shrink)

"Each animal in its own psychological setting . . / 1 Gerard Piel Scientific American, New York TC Schneirla was more interested in questions than in ...

These are set against introductory essays describing the philosophical, historical and psychological approaches, making this a uniquely inclusive overview.

One of the most important and influential philosophers of the last 30 years, John Searle has been concerned throughout his career with a single overarching question: how can we have a unified and theoretically satisfactory account of ourselves and of our relations to other people and to the natural world? In other words, how can we reconcile our common-sense conception of ourselves as conscious, free, mindful, rational agents in a world that we believe comprises brute, unconscious, mindless, meaningless, mute physical (...) particles in fields of force? The essays in this collection are all related to the broad overarching issue that unites the diverse strands of Searle's work. Gathering in an accessible manner essays available only in relatively obscure books and journals, this collection will be of particular value to professionals and upper-level students in philosophy as well as to Searle's more extended audience in such fields as psychology and linguistics. (shrink)

Introduction Linguistic literature on the problem of language and consciousness is, by all means, not a voluminous one. One can scarcely find an article or ...

The paper argues that there are effectively only two tenable theories of the mind?brain relationship: ?epiphenomenalism? and ?radical dualism? (interactionism). So long as account is taken only of the conventional sciences, the odds are heavily stacked in favour of epiphenomenalism. However, once the findings of parapsychology are admitted to consideration, a very different situation obtains. It is here argued that parapsychology only makes sense within a dualist metaphysic.

Contemporary materialist theories purporting to account for experience are seriously flawed, for they fail to accommodate the full range of human experience, especially paranormal experience. Substance Dualism (SD) is re-examined in light of this experience,including telepathy and clairvoyance, mediumship, the near-death experience, and reincarnation cases involving children’s memories. A different kind of materialism postulating degrees of fi neness and vibration—one prefigured by the ancient Stoics and developed hereunder the heading Transcendental Materialism (TM)—is also explored. The inadequacies of both reductive and (...) non-reductive materialism are shown. McGinn, Chalmers, and Searle are given special attention. (shrink)

The 'subjective reduction' interpretation of measurement in quantum physics proposes that the collapse of the wave-packet, associated with measurement, is due to the consciousness of human observers. A refined conceptual replication of an earlier experiment, designed and carried out to test this interpretation in the 1970s, is reported. Two improvements are introduced. First, the delay between pre-observation and final observation of the same quantum event is increased from a few microseconds in the original experiment to one second in this replication. (...) Second, rather than using the final observers' verbal response as the dependent variable, his early brain responses as measured by EEG are used. These early responses cover a period during which an observer is not yet conscious of an observed event. Our results support the 'subjective reduction' hypothesis insofar as significant differences in the brain responses of the final observer are found, depending on whether or not the pre-observer has been looking at the quantum event . Alternative 'normal' explanations are discussed and rejected. It is concluded that the present results do justify further research along these lines. (shrink)

Why do so many people believe in psychic phenomena? Because they have psychic experiences. And why do they have psychic experiences? Because such experiences are an inevitable consequence of the way we think. I suggest that, like visual illusions, they are the price we pay for a generally very effective relationship with a massively complex world.

Consciousness is a hot topic. Relegated to the fringes of science for most of the twentieth century, the question of consciousness only crept back to legitimacy with the collapse of behaviourism in the 1960s and 1970s, and only recently became an acceptable term for psychologists to use. Now many neuroscientists talk enthusiastically about the nature of consciousness, there are societies and regular conferences, and some say that consciousness is the greatest challenge for twenty-first century science. Although confusion abounds, there is (...) at least some agreement that at the heart of the problem lies the question of subjectivity - or what it’s like for _me_. As philosopher Thomas Nagel (1974) put it when he asked his famous question "What is it like to be a bat?" - if there is something it is like _for the bat_ then we can say that the bat is conscious. This is what we mean by consciousness - consciousness is private and subjective and this is why it is so difficult to understand. (shrink)

Also published in 1998 in S.R.Hameroff, A.W.Kaszniak and .C.Scott (Eds) _Toward a Science of_ _Consciousness II._ MIT Press. 701-707. Note that there were problems with the editing of this volume and there are some misprints. This version is correct.

This work was the first sustained philosophical study of psychic phenomena to follow C.D. Broad's LECTURES ON PSYCHICAL RESEARCH, written nearly twenty years ...

A new event is defined as an intervention in the time reversible dynamical trajectories of particles in a system. New events are then assumed to be quantum fluctuations in the spatial and momentum coordinates, and mental action is assumed to work by ordering such fluctuations. It is shown that when the cumulative values of such fluctuations in a mean free path of a molecule are magnified by molecular interaction at the end of that path, the momentum of a molecule can (...) be changed from its original direction to any other direction. In this way mental action can produce effects through the ordering of thermal motions. Examples are given which show that the ordering of 10^4 10^5 molecules is sufficient to (a) produce detectible PK results and (b) open sufficient ion channels in the brain to initiate a physical action. The relationship of the above model to the arrow of time is discussed. (shrink)

Experiments show that psi differs from known physical processes in a variety of ways, and these differences are described herein. Because of these, psi cannot be accounted for in terms of presently known physical laws. A number of theories, of which we review a sampling, suggest ways in which known physical laws might be expanded in order to account for psi. However, there is no agreement on which of these theories, if any, will ultimately provide a general explanation. A further (...) problem in studying psi is that it is elusive, i.e., methods are not presently known by which it can be reliably produced. However, if psi is real, its study can open the door to a new frontier of knowledge and contribute to our understanding of consciousness. (shrink)

It is shown that if mental influence can change a position or momentum coordinate within the limits of the uncertainty principle, such change, when magnified by a single interaction, is sufficient to order the direction of traveling molecules. Mental influence could initiate an action potential in the brain through this process by using the impact of ordered molecules to open the gates of sodium channels in neuronal membranes. It is shown that about 80 ordered molecules, traveling at thermal velocity in (...) the intercellular medium in the brain, can break an ionic or covalent bond, and that the number needed to initiate an action potential is relatively small. If mental influence can act within the brain, it is reasonable to suppose it can act to some extent outside of it. If mental influence could not only order the direction of individual molecules, but coordinate this effect to produce a longitudinal pressure wave which is reasonably coherent across a macroscopic surface, only 10^4 molecules need be simultaneously affected to produce a detectible sound wave. Such an effect is not ordinarily observed, which suggests that if mental influence acts by ordering the direction of molecules, it acts at the level of individual molecules, but does not coordinate their motion. (shrink)

The paper attempts to clarify some conceptual, epistemological, and ontological issues connected with so?called psi phenomena. In part I an attempt is made to clarify the various ways in which the concept of psi may be used. The concept is tied to the concept of intentional content. Part II discusses how psi phenomena can be verified/falsified and in what sense parapsychology may be a scientific discipline in spite of there being no empirically well?founded theories about psi as such. In part (...) III an attempt is made to clarify the sense in which psi phenomena may support a dualist position and undermine a materialist position. It is argued that psi phenomena support some sort of dualist position. (shrink)

Are there relationships between consciousness and the material world? Empirical evidence for such a connection was reported in several meta-analyses of mind-matter experiments designed to address this question. In this paper we consider such meta-analyses from a statistical modeling perspective, emphasizing strategies to validate the models and the associated statistical procedures. In particular, we explicitly model increased data variability and selection mechanisms, which permits us to estimate 'selection profiles ' and to reassess the experimental effect in view of potential other (...) effects. An application to the data pool considered in the influential meta-analysis of Radin and Nelson (1989) yields indications for the presence of random and selection effects Adjustment for possible selection is found to render the,without such an adjustment significant, experimental effect non-significant. Somewhat different conclusions apply to a subset of the data deserving separate consideration. The actual origin of the data features that are described as experimental, random, or selection effects within the proposed model cannot be clarified y our approach and remains open. (shrink)

This accessible and comprehensive overview of the work of Stanislav Grof, one of the founders of transpersonal psychology, was specifically written to acquaint...