Harold E. Puthoff

Overview

During the 1970s, Harold Puthoff and Russell Targ initiated a systematic research program at Stanford Research Institute (SRI) to investigate remote viewing, the purported ability to perceive distant locations through means other than the known senses. Their work on replication studies of remote viewing with natural targets represented a deliberate effort to move beyond anecdotal reports and establish whether such phenomena could be reliably demonstrated under controlled laboratory conditions.

The replication study on natural targets was particularly significant because it addressed a fundamental question in parapsychological research: whether apparent remote viewing effects observed in initial experiments could be reproduced consistently. By employing natural outdoor locations as targets rather than simple laboratory stimuli, Puthoff and Targ sought to test remote viewing under conditions that more closely resembled real-world scenarios.^[1]

This research emerged within a broader context of parapsychological investigation that sought to apply rigorous scientific methodology to phenomena traditionally considered outside the scope of conventional science. The work at SRI during this period established protocols and analytical approaches that would influence remote viewing research for decades to come.

Experimental Design and Methodology

The experimental design for the replication studies incorporated several key methodological features intended to minimize potential sources of error and bias. Puthoff and Targ employed natural outdoor targets (specific geographical locations in the San Francisco Bay Area) that were selected randomly and kept hidden from both the remote viewing subject and the experimenters conducting the session.

In these experiments, a subject would remain in a laboratory setting while a target location was selected through randomization procedures. The subject would then attempt to describe the distant location, providing verbal descriptions, drawings, or written accounts of what they perceived. Simultaneously, an independent experimenter would visit the target location and record detailed observations, creating a permanent record against which the subject’s descriptions could be compared.

The use of natural targets represented a deliberate methodological choice. Rather than employing artificial stimuli such as photographs, geometric shapes, or laboratory-constructed scenes, Puthoff and Targ selected actual outdoor locations with complex, varied features. This approach aimed to provide targets with sufficient information content to allow meaningful discrimination between accurate and inaccurate descriptions, while also testing whether remote viewing could function in naturalistic contexts.^[1]

Analysis of the results employed both qualitative and quantitative methods. Independent judges, blind to which descriptions corresponded to which targets, would rate the correspondence between subject descriptions and target characteristics. Statistical analysis would then determine whether the correspondence exceeded what would be expected by chance.

Key Findings and Results

The replication studies on natural targets produced results that Puthoff and Targ interpreted as supporting the existence of remote viewing phenomena. Subjects’ descriptions of target locations showed statistically significant correspondence with the actual characteristics of those locations, as determined by independent judges who were blind to the experimental conditions.^[2]

One of the most significant aspects of these findings was their apparent reproducibility. Rather than representing isolated successes, the results suggested that remote viewing effects could be obtained across multiple trials and with different subjects. This replicability was crucial for establishing remote viewing as a phenomenon worthy of serious scientific investigation, as it distinguished the findings from chance occurrences or experimenter artifacts.

The research also demonstrated that information transmission appeared to occur in remote viewing experiments. Puthoff, Targ, and Charles Tart examined the nature of the information being transmitted, investigating whether subjects were accessing specific details about target locations or whether they were obtaining more general impressions.^[3] Their analysis suggested that subjects could provide accurate descriptions of distinctive features, spatial relationships, and environmental characteristics of distant locations.

The state-of-the-art assessment conducted by Targ, Puthoff, and May in 1977 summarized the progress made in remote viewing studies at SRI, documenting the development of experimental protocols and the accumulation of positive results across numerous trials.^[4] This assessment indicated that remote viewing research had advanced beyond preliminary investigations to establish a body of experimental evidence suggesting genuine information transmission.

Replication and Extensions

Following the initial replication studies on natural targets, Puthoff and colleagues continued to refine and extend the research. One important development involved the use of mini-targets, smaller, more precisely defined target locations that allowed for greater experimental control while maintaining the naturalistic character of the targets.^[5]

The mini-target approach represented a methodological refinement that addressed some of the complexities inherent in using large outdoor locations as targets. By selecting smaller, more discrete target areas, experimenters could more precisely define what constituted a “hit” or accurate description. This increased specificity improved the statistical power of the experiments and reduced ambiguity in the evaluation of subject descriptions.

The replication studies also contributed to the development of associational remote viewing (ARV), a variant of remote viewing in which subjects attempt to associate randomly selected targets with specific outcomes or events.^[6] This extension of remote viewing methodology demonstrated the flexibility of the experimental approach and its potential applicability to different research questions.

The work conducted at SRI during this period, including the CIA-initiated remote viewing experiments, built directly upon the foundation established by the replication studies on natural targets.^[7] The protocols developed for testing remote viewing with natural targets provided the basis for subsequent investigations that would extend over several decades.

Methodological Refinement and Scientific Rigor

The replication studies on natural targets represented a significant effort to apply rigorous scientific methodology to the investigation of remote viewing. Puthoff and Targ incorporated several features designed to minimize potential sources of error and bias that had plagued earlier parapsychological research.

The use of randomization procedures for target selection was crucial. By employing objective methods to determine which target would be used in each trial, the experimenters eliminated the possibility that targets could be selected in ways that might favor successful outcomes. This randomization ensured that results could not be attributed to biased target selection.

The employment of blind evaluation procedures was equally important. Independent judges who were unaware of which descriptions corresponded to which targets evaluated the correspondence between subject descriptions and target characteristics. This blinding prevented evaluators from unconsciously biasing their assessments in favor of positive results.

The use of natural targets, while introducing some complexity to the experimental design, also served important methodological purposes. Natural targets provided rich, varied information that could be described in multiple ways, reducing the likelihood that successful descriptions could be attributed to lucky guesses or statistical artifacts. The complexity of natural environments made it more difficult to explain positive results through conventional means.

The systematic documentation of both subject descriptions and target characteristics created permanent records that could be reviewed and re-analyzed by other researchers. This transparency supported the scientific goal of reproducibility and allowed independent verification of the experimental findings.

Significance and Impact

The replication studies on the remote viewing of natural targets held significant implications for parapsychological research. By demonstrating that remote viewing effects could be obtained consistently across multiple trials and subjects, the research suggested that remote viewing might represent a genuine phenomenon worthy of serious scientific investigation.

The work established protocols and methodological approaches that became standard in subsequent remote viewing research. The emphasis on randomization, blinding, and independent evaluation set a precedent for rigorous experimental design in parapsychology. The use of natural targets as a testing ground for remote viewing phenomena provided a model for investigating purported psi abilities under ecologically valid conditions.

The replication studies also contributed to broader discussions about the nature of information transmission and the limits of human perception. By suggesting that information could be obtained about distant locations through means other than conventional sensory channels, the research raised fundamental questions about the nature of consciousness and the relationship between mind and physical reality.

The findings from these studies influenced subsequent research directions in parapsychology, including investigations into the mechanisms underlying remote viewing, the factors that might enhance or inhibit remote viewing performance, and the potential applications of remote viewing in practical contexts. The work demonstrated that parapsychological phenomena could be studied using scientific methodology, even if the results remained controversial within the broader scientific community.