Overview

Michaeleen Constance Maher emerged as a leading figure in quantitative parapsychology during the 1970s and 1980s, bringing rigorous instrumental and statistical methods to the study of spontaneous psi phenomena. Her career reflects a commitment to bridging laboratory-based ESP research and field investigation of reported anomalous experiences, a methodological integration that has remained central to parapsychological inquiry. Maher’s work spans ESP processing mechanisms, experimenter effects, healing-related physiological changes, and systematic documentation of haunting phenomena in real-world settings.

Life and career

Maher conducted collaborative research with Gertrude Schmeidler, a prominent parapsychologist at the City College of New York, during the mid-1970s. This partnership produced foundational work on both spontaneous apparitional phenomena and laboratory-based ESP mechanisms. In the 1990s, Maher expanded her focus to field-based investigations of reported hauntings, often collaborating with William G. Roll, a leading researcher in poltergeist and apparitional phenomena, and with Glenn P. Hansen, an engineer and parapsychologist specializing in instrumental detection methods.

Maher’s research trajectory reflects a systematic progression from laboratory studies of ESP processing to applied field methodology. Her early work examined how cognitive and neurophysiological factors influence psi performance, while her later investigations applied those insights to understanding spontaneous anomalous experiences in naturalistic contexts. This approach positioned her work at the intersection of experimental parapsychology and anomalous-experience documentation, a methodological stance that emphasized quantification and instrumental verification over anecdotal report alone.

Research

ESP processing and cerebral lateralization

In the mid-1970s, Maher and Schmeidler investigated the neurophysiological basis of ESP. Their work on cerebral lateralization effects in ESP processing examined whether hemispheric asymmetries in brain function correlate with psi-relevant cognitive performance.³ This research contributed to a broader parapsychological interest in understanding the neural substrates of anomalous cognition, positioning ESP within frameworks of cognitive neuroscience rather than treating it as a purely statistical phenomenon.

Experimenter effects and nonverbal communication

Maher and Schmeidler also examined the role of experimenter behavior in shaping psi-conducive and psi-inhibitory experimental contexts. Their investigation of nonverbal communications of experimenters explored how subtle behavioral cues and interpersonal dynamics influence psi task performance.⁴ This work addressed a persistent methodological concern in parapsychology: the degree to which experimenter expectancy, attitude, and nonverbal behavior affect outcome measures in psi experiments.

Quantitative investigation of apparitional phenomena

Maher’s most sustained research focus became the quantitative investigation of reported haunting phenomena. In 1975, she and Schmeidler published a quantitative investigation of a recurrent apparition, applying statistical and observational methods to a case of reported repeated apparitional experience.¹ This early work established the template for Maher’s later field-based investigations: systematic documentation, instrumental measurement, and quantitative analysis of spontaneous anomalous phenomena.

Throughout the 1990s, Maher collaborated with Hansen to develop and refine field investigation protocols. In 1992, they conducted a quantitative investigation of a reported haunting using several detection techniques, combining instrumental monitoring with environmental and perceptual assessment.² That same year, Maher, Roll, and Brown investigated reported haunting occurrences in a Japanese restaurant in Georgia, applying systematic observation and instrumental methods to a contemporary case.⁸

Maher and Hansen extended this methodology to legally disputed cases. In 1995, they conducted a quantitative investigation of a reported haunted castle in New Jersey, examining a location with historical claims of anomalous phenomena using multiple detection approaches.⁶ In 1997, they investigated a legally disputed “haunted house,” bringing quantitative rigor to a case with significant legal and property implications.⁹ These investigations demonstrated the applicability of parapsychological methods to real-world contexts where anomalous-experience claims had practical consequences.

Maher’s 1999 and 2000 publications synthesized her field-investigation experience. Her 1999 article, “Riding the waves in search of the particles: A modern study of ghosts and apparitions,” presented a comprehensive framework for understanding apparitional phenomena through contemporary parapsychological and physiological perspectives.¹⁰ Her 2000 quantitative investigation of the General Wayne Inn applied the full suite of field-investigation techniques to a historically significant location with reported anomalous phenomena.⁷

Physiological correlates of healing practices

In 1996, Maher expanded her research scope to examine physiological mechanisms in healing-related practices. Working with Hansen, Vartanian, Chernigovskaya, and Reinsel, she investigated physiological concomitants of the laying-on of hands, measuring changes in healers’ and patients’ tactile sensitivity during healing interactions.⁵ This work bridged parapsychological interest in anomalous healing with quantitative psychophysiological measurement, examining whether healing-related experiences correlate with measurable changes in sensory function.

Influence and reception

Maher’s work has been influential in establishing field investigation as a legitimate and systematic component of parapsychological research. Her collaboration with Schmeidler contributed to the theoretical understanding of ESP mechanisms and experimenter effects, while her later work with Hansen and Roll demonstrated that quantitative methods could be applied to spontaneous anomalous phenomena in real-world settings. This methodological integration, combining laboratory-based insights about psi processing with field-based documentation of apparitional and poltergeist-like phenomena, has shaped subsequent approaches to anomalous-experience research.

Her investigations of legally disputed haunting cases brought parapsychological methodology into contexts where anomalous-experience claims had practical, legal, and property-related implications. By applying instrumental detection, environmental monitoring, and statistical analysis to these cases, Maher demonstrated that parapsychological methods could contribute to understanding phenomena with real-world consequences beyond academic interest.

Maher’s publications in the Journal of the American Society for Psychical Research and the Journal of Parapsychology established her work within the mainstream parapsychological literature. Her sustained focus on quantitative field methodology and her willingness to investigate cases with legal and historical significance positioned her as a bridge between laboratory parapsychology and applied anomalous-experience research. Her work continues to be cited in contemporary discussions of field-based psi research and the investigation of spontaneous phenomena.