Overview

Caroline Watt‘s career in parapsychology spans more than three decades and encompasses laboratory ESP research, dream-based anomalous cognition studies, investigations of paranormal belief and mental health, and methodological innovation in psi research design. Watt’s work is characterized by a commitment to rigorous experimental control, transparent pre-registration of hypotheses, and engagement with skeptical perspectives. As the Koestler Chair at Edinburgh, Watt has shaped contemporary parapsychology through both empirical contributions and advocacy for higher methodological standards across the field.

Watt’s research addresses a central tension in parapsychology: how to design experiments sensitive enough to detect anomalous effects while maintaining the controls necessary to rule out conventional explanations. Her approach combines laboratory protocols (particularly ganzfeld and dream-based paradigms) with careful attention to individual differences, psychological mediators, and experimenter effects. This framework has allowed Watt to investigate not only whether psi phenomena occur, but also under what conditions and in which populations they are most likely to manifest.

Life and career

Watt joined the Koestler Parapsychology Unit at the University of Edinburgh early in her career and has remained there throughout her professional life. The Unit, founded by Arthur Koestler, is one of the world’s leading academic centers for parapsychology research. Watt’s trajectory within the Unit reflects her growing prominence in the field: she has authored or co-authored numerous empirical studies, methodological papers, and reviews; served as a collaborator with leading skeptical researchers; and ultimately assumed the Koestler Chair, the Unit’s senior academic position, in 2004.

Watt’s early work focused on the relationship between personality factors and ESP performance. In the 1990s, Watt conducted a meta-analysis of forced-choice ESP studies and investigated the role of perceptual defense and vigilance, psychological mechanisms by which individuals unconsciously avoid or approach threatening information, in psi performance.⁸ This work established a theoretical framework linking individual differences in cognitive style to variations in ESP expression, a theme that would recur throughout Watt’s career.

During the 2000s, Watt’s research expanded to encompass paranormal belief, mental health, and the psychological underpinnings of anomalous experiences. Collaborations with Richard Wiseman and others produced studies examining the cognitive correlates of paranormal belief, the role of experimenter effects in psi research, and the relationship between belief in the paranormal and anxiety or perceived control.⁹⁵ Simultaneously, Watt began investigating precognitive dreaming as a window into anomalous cognition in naturalistic settings, combining laboratory dream-monitoring protocols with questionnaire measures of psychological factors.

In recent years, Watt has become a leading advocate for pre-registration and transparent methodology in parapsychology. Watt’s ganzfeld studies with selected participants, pre-registered in advance, represent a methodological standard for contemporary psi research.² Watt has also contributed to public understanding of parapsychology and paranormal phenomena through popular books and collaborative work with science communicators on skepticism and paranormal belief.

Research

Extrasensory perception and cognitive factors

Watt’s foundational work on ESP examined the role of perceptual defense and vigilance in psi performance. Perceptual defense refers to the unconscious tendency to avoid processing threatening or anxiety-provoking stimuli; vigilance is the opposite tendency to approach and process such stimuli. Watt hypothesized that these individual differences in cognitive style would correlate with ESP performance, with vigilant individuals showing stronger psi effects. In a series of forced-choice ESP studies, Watt measured participants’ perceptual defense/vigilance using implicit and explicit measures and correlated these with ESP scores. Results supported the hypothesis: participants scoring high on vigilance showed significantly better ESP performance than those scoring high on defense.³ This finding suggested that psi expression is mediated by unconscious cognitive processes and that individual differences in how people process information shape their ability to access anomalous information.

Watt’s work on experimenter effects demonstrated that the expectations and beliefs of the experimenter conducting a psi study significantly influence both participants’ paranormal beliefs and their psi performance. In a study with Richard Wiseman, Watt found that experimenters who believed in psi obtained significantly higher ESP scores from participants than experimenters who were skeptical, even when the experimental protocol was identical.⁵ This finding underscores the importance of blind or automated experimental procedures in parapsychology and highlights how subtle experimenter cues can influence outcomes.

More recently, Watt has conducted pre-registered ganzfeld ESP studies with selected participants, individuals who report prior psi experiences or who score high on measures associated with psi performance. In a 2020 study, Watt and colleagues tested precognition in the ganzfeld with participants who had been prospectively selected based on their prior psi-related experiences. The study employed sensory attenuation (the ganzfeld protocol, in which participants receive uniform visual and auditory stimulation) and measured both ESP performance and alterations in consciousness during the session. Results showed significant ESP effects, with selected participants outperforming chance expectation.² The study was pre-registered, meaning the hypotheses and analysis plan were specified in advance, reducing the risk of bias from post-hoc data exploration.

Precognitive dreaming and anomalous cognition

Watt has made substantial contributions to the study of precognitive dreaming, the apparent ability of dreams to contain information about future events. Unlike laboratory ESP studies, which test psi under controlled conditions, dream-based research examines anomalous cognition in naturalistic sleep settings, offering insights into how psi might manifest in everyday life.

In a controlled sleep-laboratory study, Watt and colleagues monitored participants’ dreams and tested whether dream content contained information about randomly selected target images that would be presented after the dream period ended. Participants’ dreams were recorded and later judged against a set of possible targets. Results showed significant evidence for precognitive dream content, with judges correctly matching dreams to future targets at rates exceeding chance.¹⁰

Watt has also investigated the psychological factors that mediate precognitive dream experiences. In a study of prospectively reported spontaneous precognitive dreams, Watt and colleagues examined the characteristics of dreams that people spontaneously report as precognitive. The study found that paranormal belief, selective recall (the tendency to remember dreams that later seem to match events), and propensity to experience anomalous cognition all predicted the frequency of reported precognitive dreams.¹ This work suggests that precognitive dream experiences are shaped not only by genuine anomalous information transfer, but also by psychological factors that influence which dreams people notice and remember.

In another investigation, Watt tested the implicit processing hypothesis, the idea that precognitive information is processed unconsciously and only later becomes conscious. Using eye-tracking methodology, Watt found evidence that participants’ visual attention was influenced by precognitive information before they consciously perceived it, supporting the hypothesis that psi operates through implicit, automatic cognitive processes.¹¹

Paranormal belief and mental health

Watt has conducted extensive research on the relationship between paranormal belief and psychological well-being. This work addresses a fundamental question: why do people believe in the paranormal, and what psychological functions does such belief serve?

In a study of cognitive and psychological mediators of anxiety, Watt found that paranormal belief was associated with anxiety and perceived loss of control in childhood.⁴ This suggests that belief in the paranormal may serve a coping function, allowing individuals who experienced early loss of control to regain a sense of agency or predictability in an uncertain world. Watt’s work also examined the relationship between paranormal belief and mental boundaries, the psychological distinction between self and other, reality and fantasy. In collaboration with Thomas Rabeyron, Watt found that paranormal experiences and beliefs were associated with more permeable mental boundaries, which in turn correlated with both positive outcomes (creativity, openness) and negative outcomes (anxiety, dissociation).¹²

Watt has also investigated paranormal belief in the context of health and healing. In a study of arthritis sufferers, Watt and colleagues examined whether belief in paranormal healing and paranormal belief more broadly were associated with physical and psychological well-being. Results showed complex relationships: paranormal belief was associated with both higher anxiety and higher perceived control, suggesting that belief in the paranormal has multifaceted psychological effects.¹³

Distant healing and treatment expectancy

Watt has conducted rigorous studies of distant healing (the practice of sending healing intentions to a person at a distance) examining the role of expectancy and belief in healing outcomes. In a study of arthritis sufferers, Watt and colleagues randomly assigned participants to receive either genuine distant healing or sham distant healing, while manipulating whether participants knew which condition they were in. Results showed that treatment knowledge (whether participants believed they were receiving genuine healing) significantly affected outcomes, with participants who believed they were receiving genuine healing showing greater improvement in pain and function.⁶ This finding highlights the importance of expectancy effects in healing studies and suggests that the psychological context of treatment is as important as any putative anomalous mechanism.

Skeptic-proponent collaboration

Watt has been a pioneer in collaborative research between skeptics and proponents of parapsychology. In a landmark paper with Richard Wiseman and others, Watt and colleagues argued that skeptic-proponent collaboration, despite apparent ideological differences, can yield methodologically superior research that advances the field.⁷ This work demonstrates that rigorous science requires both belief and skepticism, and that the most robust findings emerge when researchers with different perspectives work together to design experiments that satisfy both camps.

Public understanding and science communication

Beyond laboratory research, Watt has contributed to public understanding of parapsychology and paranormal phenomena. Watt has authored books on paranormal belief and psi phenomena, including a comprehensive overview of the paranormal from historical and scientific perspectives.¹⁴ Watt has also collaborated with science communicators and skeptics on projects designed to promote critical thinking about paranormal claims. In a study with Richard Wiseman and others, Watt examined whether television disclaimers about the paranormal (statements warning viewers that paranormal claims are unproven) actually influence belief in the paranormal.¹⁵ This work reflects Watt’s commitment to understanding not only whether psi phenomena occur, but also how people form beliefs about the paranormal and how those beliefs can be influenced by media and communication.

Influence and reception

Watt’s influence in parapsychology extends across multiple dimensions. As the Koestler Chair at Edinburgh, Watt leads one of the world’s premier parapsychology research centers and shapes the direction of contemporary psi research through both empirical work and methodological advocacy. Watt’s emphasis on pre-registration, transparent reporting, and skeptic-proponent collaboration has helped establish higher standards for experimental rigor in the field.

Watt’s research on psychological factors in psi performance has influenced how parapsychologists conceptualize anomalous cognition. By demonstrating that individual differences in cognitive style, personality, and belief mediate psi expression, Watt has shifted the field’s focus from asking simply “does psi exist?” to asking “under what conditions and in which individuals does psi manifest?” This shift has made parapsychology more psychologically sophisticated and has opened new avenues for understanding the mechanisms underlying anomalous phenomena.

Watt’s work on paranormal belief and mental health has also had broader impact beyond parapsychology, contributing to psychological research on how people form beliefs about extraordinary phenomena and how such beliefs relate to mental health and well-being. Watt’s collaborations with mainstream psychologists and cognitive scientists have helped legitimize parapsychology as a field worthy of serious scientific investigation.

Watt’s advocacy for skeptic-proponent collaboration has influenced the culture of parapsychology research. By demonstrating that researchers with different perspectives can work together productively, Watt has helped reduce the adversarial tone that has sometimes characterized debates between parapsychologists and skeptics. This collaborative approach has made parapsychology more open to critical scrutiny and has raised the bar for methodological rigor across the field.

In the broader context of science communication and public understanding of the paranormal, Watt’s work has contributed to more nuanced public discourse about paranormal phenomena. Rather than dismissing paranormal belief as irrational, Watt’s research suggests that such belief serves psychological functions and that understanding these functions is key to promoting critical thinking about paranormal claims. This perspective has influenced how science communicators and educators approach the topic of paranormal belief.

Watt’s research on precognitive dreaming has also influenced how parapsychologists think about anomalous cognition in naturalistic settings. By combining laboratory dream-monitoring with questionnaire measures of psychological factors, Watt has developed a methodology for studying psi in contexts closer to everyday life than traditional laboratory protocols. This approach has opened new avenues for understanding how anomalous cognition might manifest in real-world settings.