Testing the CCC:
A Psychological Approach to Quantum Mechanics
Putting the Consciousness Causes Collapse (CCC) interpretation of quantum mechanics to an empirical test requires methods that are not limited to those of traditional experimental physics. This research uses the tools of cognitive psychology—specifically, millisecond-scale reaction time testing—to bridge the gap between quantum mechanics and human consciousness.
The orthodox mathematics of quantum mechanics creates a profound theoretical paradox known as the "von Neumann chain." When a physical measuring device, such as a Geiger counter, interacts with an unobserved quantum state, it does not mathematically force the state to collapse into a single, definite reality. Instead, the device simply becomes entangled with the quantum system, entering into a macroscopic superposition itself. If a computer subsequently reads the Geiger counter and displays the result on a screen, the computer also joins this unbroken chain of superposition. According to the Consciousness Causes Collapse (CCC) hypothesis, physical matter alone cannot resolve this ambiguity; the only boundary capable of breaking the von Neumann chain and forcing a definitive outcome is the threshold of conscious biological registration.
Testing this theory empirically can be approached from two distinct angles: the Subliminal Priming Paradigm and the Processing Asymmetry Paradigm. While they use different experimental designs, both leverage human response times to detect behavioral signatures that suggest the physical world—along with the instruments measuring it—remains suspended in this von Neumann chain until the exact moment it is biologically registered by an observer.
The orthodox mathematics of quantum mechanics creates a profound theoretical paradox known as the "von Neumann chain." When a physical measuring device, such as a Geiger counter, interacts with an unobserved quantum state, it does not mathematically force the state to collapse into a single, definite reality. Instead, the device simply becomes entangled with the quantum system, entering into a macroscopic superposition itself. If a computer subsequently reads the Geiger counter and displays the result on a screen, the computer also joins this unbroken chain of superposition. According to the Consciousness Causes Collapse (CCC) hypothesis, physical matter alone cannot resolve this ambiguity; the only boundary capable of breaking the von Neumann chain and forcing a definitive outcome is the threshold of conscious biological registration.
Testing this theory empirically can be approached from two distinct angles: the Subliminal Priming Paradigm and the Processing Asymmetry Paradigm. While they use different experimental designs, both leverage human response times to detect behavioral signatures that suggest the physical world—along with the instruments measuring it—remains suspended in this von Neumann chain until the exact moment it is biologically registered by an observer.
Paradigm 1: Subliminal Priming
In cognitive psychology, the term priming refers to an effect where exposure to one stimulus influences a person's response to another stimulus. For example, a positive word such as “happy” is recognized and responded to faster after the word “joy” as compared to a negative word such as “sadness” or “death”. The word “up” is responded to faster following a prime such as “high” or “top” as opposed to “bottom” or “low”. The primes work by getting you to lean mentally in a particular direction, so when you have to respond to something that is already in that direction you can do it faster, while it takes you longer than normal to respond to something in the opposite direction. Psychologists have been exploiting these reliable reaction time effects for decades as a multipurpose research tool. In recent years, these methods have even been used to prime subjects subliminally (Dehaene et al, 1998; Greenwald et al, 2003; Kouider & Dehaene, 2009). In such research, subjects are flashed a prime (such as a word or a symbol) on a computer screen for a length of time that is just underneath the duration that can be consciously experienced (about 50 milliseconds). Despite subjects reporting to not be aware of seeing the prime, they demonstrated shorter reaction times responding to stimulus that is congruent with the prime than to incongruent stimulus. Their brains processed the meaning of the prime and began to react to it even though they were not aware of it. The prime was processed unconsciously.
In this first study (Lucido, 2023) primes were derived from quantum events that were shielded from conscious observation. A Geiger counter was used to measure the radioactive decay from a small sample of uranium ore during a series of four second intervals of time. The frequency of clicks for each interval was transformed through the computer software and determined whether an odd or even number prime would be flashed on the screen for 50 milliseconds (too short a duration to be consciously experienced). The primes were followed by a stimulus number that was presented on the screen that subjects could experience and were asked to respond to by stating out loud whether that number was odd or even. The subject's reaction time, how long it took them to say "odd" or "even" was recorded.
A prime in a state of superposition should not produce its full effect on response time as it will be simultaneously both congruent and incongruent with the stimulus. Therefore, it is hypothesized that if the CCC interpretation of quantum mechanics is correct the stimulus primes will not have the expected effect on reaction time (reducing it when congruent and increasing it when incongruent), as it would in a control condition in which the primes were directly observed by the experimenter beforehand.
A prime in a state of superposition should not produce its full effect on response time as it will be simultaneously both congruent and incongruent with the stimulus. Therefore, it is hypothesized that if the CCC interpretation of quantum mechanics is correct the stimulus primes will not have the expected effect on reaction time (reducing it when congruent and increasing it when incongruent), as it would in a control condition in which the primes were directly observed by the experimenter beforehand.
If it were the case that the physical measuring device alone collapsed the wave function, we would expect the radioactive decay to have collapsed into a series of definite states upon its initial interaction with the Geiger counter, and whether the experimenter later viewed the values on a computer screen would not have altered the effect the primes had on reaction time.
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Results of Original Study
Within the observed condition, items preceded by congruent primes were responded to 36 ms faster than items preceded by incongruent primes, while the priming effect was only 8 ms in the unobserved condition. This resulted in an average response time difference of 28 ms between the two conditions.
Replications
A follow-up study (Lucido, 2024) using a keystroke response modality to indicate odd or even, rather than saying the words in a microphone, yielded similar results. Two additional experiments were conducted that further varied response modality, and the duration of the prime presentation (Lucido, 2025), and the most recent two experiments that were conducted used alternative stimulus items and primes (Lucido, 2026a). In all six of these experiments, primes that were previously exposed to human observation exhibited greater congruent-versus-incongruent response time differences as compared to those that were denied that observation. The nominal attenuation effects in the unobserved conditions across these experiments ranged from 40% to 77%.
The Raw Data from all six priming experiments are available here: Raw Data
Detailed results from the 6 study pooled analysis are available here: pooled analysis
Procedures for Subliminal Priming Experiments.
Detailed results from the 6 study pooled analysis are available here: pooled analysis
Procedures for Subliminal Priming Experiments.
Paradigm 2: Processing Asymmetry
The orthodox von Neumann-Wigner interpretation posits that physical matter alone cannot force quantum state reduction. If biological observation serves as the ultimate boundary condition for this reduction, collapsing a superposition into a single, definite reality, this transition cannot be an instantaneous point-event. Biological systems are governed by the physiological limits of their neural architecture. The human brain requires a finite, measurable amount of integration time to construct a definitive conscious percept from raw sensory data. For example, signal construction within visual networks involves high-frequency oscillatory synchrony, specifically gamma-band activity in the 60 to 100 Hz range, which corresponds to neural cycle periods of roughly 10 to 16 milliseconds and serves to coordinate distributed neural activity during perceptual processing (Buzsáki & Wang, 2012). In parallel, global perceptual integration depends on rapid reciprocal interactions among distributed cortical and thalamocortical networks, with relevant feedback dynamics operating over similar 10 to 15 millisecond timescales (Llinás et al., 1998; Bullier, 2001). Furthermore, visual temporal integration dictates how raw sensory data is actively constructed, with experimentally observed temporal limits for fast sensory resolution constrained within the 10 to 20 millisecond range (Di Lollo, 1980; Holcombe, 2009).
These biological constraints create a fundamental processing asymmetry between classical and quantum information. When an observer views a standard, pre-determined image—or a quantum state already collapsed by a prior observation—the brain engages automatic neural pathways immediately. Because classical information is fixed and definite, these fast, non-conscious pathways can initiate a physical response before a fully formed conscious image is even registered.
However, when a human mind is the first to encounter a strictly unobserved quantum state, those fast-acting pathways have no definite information to act upon. A wave function in superposition cannot trigger an immediate, automatic response. Instead, processing must wait until the brain's slower conscious neural integration cycles are fully completed, forcing the wave function to collapse into a single reality. Because the cognitive system cannot rely on instantaneous pre-processing and must wait for this active biological actualization, it imposes a measurable time cost, resulting in a distinct processing delay on the millisecond scale.
To measure this predicted processing asymmetry, the research (Lucido, 2026b) analyzed 2,675 valid trials across two distinct experimental setups. The results demonstrated a consistent lag when participants processed unobserved quantum states:
Even with completely different software, visual tasks, and physical responses, the time delay remained consistent (about 10ms). This measured delay aligns directly with the biological time limits required for the brain's neural networks to synchronize. By capturing this distinct biological lag, the processing asymmetry paradigm provides a measurable behavioral signature of wave function actualization, offering empirical evidence that human consciousness acts as the active boundary condition for the collapse.
Data from the Processing Asymmetry Experiments
Raw Data Study 1
Raw Data Study 2
Code from the Processing Asymmetry Experiments
Study 1: Arduino Code, Inquisit Code
Study 2: Psychopy Code
Procedures for Processing Asymmetry Experiments
These biological constraints create a fundamental processing asymmetry between classical and quantum information. When an observer views a standard, pre-determined image—or a quantum state already collapsed by a prior observation—the brain engages automatic neural pathways immediately. Because classical information is fixed and definite, these fast, non-conscious pathways can initiate a physical response before a fully formed conscious image is even registered.
However, when a human mind is the first to encounter a strictly unobserved quantum state, those fast-acting pathways have no definite information to act upon. A wave function in superposition cannot trigger an immediate, automatic response. Instead, processing must wait until the brain's slower conscious neural integration cycles are fully completed, forcing the wave function to collapse into a single reality. Because the cognitive system cannot rely on instantaneous pre-processing and must wait for this active biological actualization, it imposes a measurable time cost, resulting in a distinct processing delay on the millisecond scale.
To measure this predicted processing asymmetry, the research (Lucido, 2026b) analyzed 2,675 valid trials across two distinct experimental setups. The results demonstrated a consistent lag when participants processed unobserved quantum states:
- Study 1 (Parity Task): Participants pressed a key to indicate whether a number flashed on the screen was odd or even. Unobserved quantum numbers produced an 8.68 ms delay compared to identical numbers that had already been pre-observed.
- Study 2 (Color Discrimination): Participants spoke the name of a color out loud. Unobserved quantum colors produced a 12.10 ms delay when compared to ordinary, classically generated colors.
Even with completely different software, visual tasks, and physical responses, the time delay remained consistent (about 10ms). This measured delay aligns directly with the biological time limits required for the brain's neural networks to synchronize. By capturing this distinct biological lag, the processing asymmetry paradigm provides a measurable behavioral signature of wave function actualization, offering empirical evidence that human consciousness acts as the active boundary condition for the collapse.
Data from the Processing Asymmetry Experiments
Raw Data Study 1
Raw Data Study 2
Code from the Processing Asymmetry Experiments
Study 1: Arduino Code, Inquisit Code
Study 2: Psychopy Code
Procedures for Processing Asymmetry Experiments
Integrating the Paradigms: Open Questions & Future Directions
While both the Subliminal Priming Paradigm and the Processing Asymmetry Paradigm provide distinct behavioral signatures related to the CCC, a central question remains: how do these two phenomena interact? Future empirical research will need to determine which of two primary theoretical frameworks explains their relationship.
Hypothesis 1: Processing Asymmetry Drives Priming Attenuation
It is entirely possible that the attenuated priming effect is actually a direct byproduct of processing asymmetry. Under this model, unobserved primes do undergo collapse but experience an initial processing delay. This temporal shift fundamentally alters how prime information interacts with target processing:
Hypothesis 2: Independent Parallel Phenomena
Alternatively, priming attenuation and processing asymmetry may operate as two completely independent signatures of wave function collapse:
Things to Consider: Non-Linear Neural Timing and Continuous Flow
When testing either hypothesis, it is critical to recognize that brain timing does not function like a simple stopwatch or a rigid assembly line. A 10–20 ms processing delay at the initial perceptual stage does not translate into a simple linear pushback of the entire cognitive sequence. Instead, visual processing relies on continuous, parallel, and highly non-linear dynamics:
Hypothesis 1: Processing Asymmetry Drives Priming Attenuation
It is entirely possible that the attenuated priming effect is actually a direct byproduct of processing asymmetry. Under this model, unobserved primes do undergo collapse but experience an initial processing delay. This temporal shift fundamentally alters how prime information interacts with target processing:
- Congruent Primes: The delay means that prime information arrives slightly late, offering less time to pre-activate correct response pathways before target onset, which reduces the reaction-time benefit.
- Incongruent Primes: The delay means that misleading information causes less active cognitive interference before the target is processed, which reduces the reaction-time penalty.
Hypothesis 2: Independent Parallel Phenomena
Alternatively, priming attenuation and processing asymmetry may operate as two completely independent signatures of wave function collapse:
- Priming Attenuation reflects an informational property: a wave function in superposition acts simultaneously as congruent and incongruent, blurring its semantic influence.
- Processing Asymmetry reflects a physiological cost: the neural binding time required for visual networks to collapse a superposition into a single reality.
Things to Consider: Non-Linear Neural Timing and Continuous Flow
When testing either hypothesis, it is critical to recognize that brain timing does not function like a simple stopwatch or a rigid assembly line. A 10–20 ms processing delay at the initial perceptual stage does not translate into a simple linear pushback of the entire cognitive sequence. Instead, visual processing relies on continuous, parallel, and highly non-linear dynamics:
- The Tipping Point: Early visual registration begins with a rapid, automatic "feedforward sweep" of sensory information through the visual cortex. The observed 10–15 ms processing asymmetry delay represents the critical micro-temporal window required for local neural networks (such as high-frequency thalamocortical loops) to establish initial synchrony and actualize the state. Crossing this actualization threshold acts as a tipping point—once crossed, it sets off an unstoppable cascade of recurrent neural activity toward a fully integrated conscious experience 50 to 300 ms later. In other words, it is possible that collapse may occur earlier during the biological binding of the precept at 10-15 ms, before the full existence of conscious experience but after the point in which its imminent future existence is assured. Consciousness in this way would cause collapse at is onset rather than at its completion.
- Temporal Bottlenecks and Phase Synchronization: Because these processing streams travel concurrently, their microsecond alignment is critical. If prime collapse occurs directly during the target's early feedforward sweep, it creates a temporary neural bottleneck, causing a measurable reaction-time delay. If state reduction finishes during a blank gap before target arrival, target processing proceeds unimpeded. The precise alignment between stimulus input, quantum state reduction, and neural integration determines whether prime influence appears fully expressed, muted, or simply delayed.
If considering replication please note
It is vital that the number of items processed by each individual participant be limited. Prior research indicates a reversal of subliminal priming effects can occur due to perceptual learning, an automatic attunement to the primes over time (Przekoracka-Krawczyk & Jaskowski, 2007) which one can also conclude could entangle them with the consciousness of the participants in the unobserved conditions. This has the potential to spoil the test. To be conservative about avoiding this learning effect, limit the number of items processed by any one individual to no more than 250.
It is vital that the number of items processed by each individual participant be limited. Prior research indicates a reversal of subliminal priming effects can occur due to perceptual learning, an automatic attunement to the primes over time (Przekoracka-Krawczyk & Jaskowski, 2007) which one can also conclude could entangle them with the consciousness of the participants in the unobserved conditions. This has the potential to spoil the test. To be conservative about avoiding this learning effect, limit the number of items processed by any one individual to no more than 250.
Lucido, R. J. (2023). Testing the Consciousness Causes Collapse Interpretation of Quantum Mechanics Using Subliminal Primes Derived from Random Fluctuations in Radioactive Decay. Journal of Consciousness Exploration & Research, 14, 3, 185-194.
Lucido, R. J. (2024). Replication of Results from a Test of the Consciousness Causes Collapse Interpretation of Quantum Mechanics Using Subliminal Priming Methodology. Journal of Consciousness Exploration & Research, 15, 3, 229-239.
Lucido, R. J. (2025). Do Cats Collapse the Wave Function? Confronting the Measurement Problem with Subliminal Priming. Journal of NeuroPhilosophy, 4(1).
Lucido, R. J. (2026a). Detection of Prior Conscious Observation With Subliminal Priming: Exploratory Evidence Across Alternative Stimulus Designs and a Pooled Analysis of Six Experiments-Unpublished Preprint 6/22/26
Lucido, R. J. (2026b). Processing Asymmetries at the Macroscopic Observer Boundary: Evidence for Observer-Dependent State Reduction-Unpublished Preprint 9/2/26
Richard James Lucido, Ph.D.
[email protected]
ResearchGate Profile
Academia.edu Profile
Lucido, R. J. (2024). Replication of Results from a Test of the Consciousness Causes Collapse Interpretation of Quantum Mechanics Using Subliminal Priming Methodology. Journal of Consciousness Exploration & Research, 15, 3, 229-239.
Lucido, R. J. (2025). Do Cats Collapse the Wave Function? Confronting the Measurement Problem with Subliminal Priming. Journal of NeuroPhilosophy, 4(1).
Lucido, R. J. (2026a). Detection of Prior Conscious Observation With Subliminal Priming: Exploratory Evidence Across Alternative Stimulus Designs and a Pooled Analysis of Six Experiments-Unpublished Preprint 6/22/26
Lucido, R. J. (2026b). Processing Asymmetries at the Macroscopic Observer Boundary: Evidence for Observer-Dependent State Reduction-Unpublished Preprint 9/2/26
Richard James Lucido, Ph.D.
[email protected]
ResearchGate Profile
Academia.edu Profile
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