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Percolation Thresholds and Complex Relational Responding

“Evolving relational frames is like evolving neuronal networks, the moment they start firing together, you no longer have frames—you have minds.” (Hebbian paraphrase: Hebb, 1949)

Introduction

This document outlines the concept of phase transitions within Hyper-Dimensional Multi-Level - Relational Frame Responding (HDML-RFR) and the use of this model to further understand and control the phase transitions that occur within HDML-RFR. The model arises from integration of concepts and models from complexity science, network theory, and cognitive development, all within the context of the root assumptions and conceptual units of Relational Frame Theory (RFT). The outline presents an evolutionary model of relational framing across levels of increasing dimensionality and complexity, beginning with isolated relational frames and evolving into multi-level, dynamic networks of relations. It describes the phase transition from discrete relational frames to networked relational behavior, highlighting key features such as cognitive load, flexibility, and emergence.

Frames to Networks: A Phase Transition

As water freezing into ice or evaporating into mist—a phase transition is a nonlinear change in system features, function and behavior, not just an accumulation or dispersion of parts or processes. Both elemental and emergent relational structures are states of cognitive functioning.

1. Initial State: Discrete Relational Frames

    Discrete & Linear -- early in learning, relational behavior is limited to individual relational frames (e.g., coordination, distinction, opposition).

    Low Integration -- these early frames are contextually bound, often cued directly by antecedents, and not yet forming cohesive structures with emergent or

    flexible functions.

    Cognitive Energy -- processing is effortful, and each relation is learned in isolation.

2. Critical Mass: Combinatorial Density Increases

    Combinatorial Entailment Emerges -- when a response class is controlled by multiple frames, entailments begin to multiply nonlinearly (e.g., A=B, B=C →

     A=C).

    Transformation of Function spreads across more complex relational networks.

    This creates “stress” or “variance of integrity” of relational frames and the Crels and Cfuncs that drive them — analogous to increasing temperature or 

    density in physical systems.

Conceptualized Phase Transition -- like a percolation threshold of network theory (Albert, R., Jeong, H., & Barabási, A.-L., 2000).

Relating of enough nodes (relata) leads to a composite, cohesive combinatorially dense network of interconnected relational nodes (stimuli) and linking Crel entailments. Behaviorally, this is when relational responding becomes more automatic, fluid, and contextually flexible. Percolation Threshold refers to that transition point at which enough nodes and connections exist in a system that an evolved connected composite structure appears. Beyond this point, transfer of function and control by Crels can rapidly and reliably spread across the entire network. 

RFT as a Percolating Network

  1. Pre-Percolation phase exists when (1) learners have a limited set of trained frames and relations, (2) stimuli are related in isolation or within small, localized frames, and (3) most relational responding is directly taught, and contextually rigid Combinatorial Density is low; frames are "siloed".
  2. A Percolation Threshold occurs when (1) more training and multiple exemplar instruction, results in more stimuli are included within a Crel, (2) entailments begin to chain — A=B, B=C, C=D...(a (2) is a minimum pair example), (3) learners start to show derived relational responses across stimuli never explicitly paired.  This relational state is a "Critical Mass" phase.

Think of it like rain on dry soil. Initially, droplets sink without much effect, but at a certain point, the ground becomes saturated, and water easily spreads everywhere.

  1. Percolation Point — phase transition is a tipping point where the relational network becomes self-organizing and new nodes (stimuli) can instantly connect to existing relations. This results in automaticity (fast, untaught responses), fluidity (shift among frames easily), and contextual flexibility (responding differently depending on Crels and Cfuncs)
  2. Post-Threshold: Semantic Percolation. The system now supports abstract thinking, analogical reasoning, and generalized transformation of function, novel stimuli trigger relational cascades, and networked cognition appears; that is, meaning is no longer tied to individual relations, but to the structure of the whole network.

Percolation Threshold in RFT – Visual Model

X-axis is the number of trained/linked relational nodes (stimuli/frames).

Y-axis shows the probability of derived relational responding (DRR) across the network.

That the curve suddenly spikes up shows nonlinear growth. This inflection point is the “percolation threshold”.

A diagram of a normal distribution

 

Before PercolationAfter Percolation
Requires direct teachingLearner derives new relations independently
Fragile frame useFlexible, generative relational skills
Local generalizationGlobal network generalization
EffortfulAutomatic and fast

The percolation threshold in RFT marks that point at which combinatorial entailment density produces a generative effect, allowing fluid, context-sensitive derived relational responding to appear spontaneously. It is a nonlinear leap from frame-based behavior to network-based responding.

3. Post-Transition: Networked Relational Behavior

Relational Networks -- frames now relate dynamically; any node (stimulus) can activate a web of relations.

Multi-Level Abstraction -- meaning is derived from the whole network, not isolated, component relations.

Hyper-dimensionality -- relations are not just linear but cross levels (e.g., a relation about relations, or abstract relational clusters).

Cognitive Evolution

Occurs when (1) transformation of function happens across complex frame families like hierarchical, deictic, or temporal networks, (2) a high frequency of arbitrary applicable relational responding occurs, and (3) spontaneous derived relational responding becomes the norm.

Neurocognitive and Computational Parallels

Like neural network formation, where enough connectivity leads to emergent learning and pattern recognition, in Assembly Theory terms, the system reaches a complexity threshold where new characteristics and functions appear that are not present in individual components (frames) of composites of components (networks and networks of networks).

Key Features of the Transition

 Feature Pre-Transition (Frames) Transition Zone Post-Transition (Networks)
StructureIsolated relationsEmerging clustersInterconnected networks
FlexibilityRigid, context-boundEmerging generalizationHighly flexible
Cognitive LoadHighModerateLow (due to fluency)
EmergenceLinear accumulationNonlinear leapsEmergent relational meaning
Intervention FocusTeaching individual framesTeaching recombinationTeaching abstraction/metacognition

Implications for Learning & Intervention

Early-stage programming should focus on (1) explicit teaching of operant, discriminated operant, conditional discriminated operant and mutually entailed Derived Relational Responding DRR), (2) engineering a “Relational Transition Zone (RTZ)” that promotes recombinative generalization (e.g., Matrix Training), and (3) post-transition programming that requires the learner to engage in abstract reasoning, self-awareness, and perspective taking using relational networks.

References

Hebb, D. O. (1949). The Organization of Behavior: A Neuropsychological Theory. New York: Wiley.