By Matt Harrington, BCBA · Behaviorist Book Club · April 2026 · 12 min read

RFT and Political Polarization: A Behavioral Analysis of Societal Division

Overview & Clinical Significance

Political and societal polarization represents one of the most significant behavioral phenomena of contemporary society, with measurable consequences for democratic institutions, public health policy, and collective action on shared challenges. Colin Harte's EABA 2025 Summer School session explores how Relational Frame Theory — as a behavioral account of human language and cognition — offers a uniquely suited framework for analyzing the mechanisms by which polarizing behaviors emerge, persist, and spread.

The clinical significance of this topic for behavior analysts extends in two directions. First, behavior analysts are citizens and professionals embedded in polarized social contexts, and the professional discussions they participate in — around evidence-based practice, neurodiversity, early intervention, and scope of practice — are themselves shaped by polarization dynamics. Understanding the behavioral mechanisms of polarization helps practitioners recognize when professional debates are being driven by relational network effects rather than empirical evidence.

Second, the RFT analysis of polarization opens genuine clinical and social intervention possibilities. If polarizing behaviors are shaped and maintained by specific patterns of derived relational responding — in particular, the transformation of stimulus functions through hierarchical, comparative, and evaluative frames — then these patterns can in principle be targeted through behavioral intervention. ACT-based approaches, perspective-taking training, and defusion strategies all represent practical applications of RFT principles to polarization-adjacent phenomena.

For BCBAs, this session represents the kind of conceptually ambitious application of behavior analysis that the field needs more of — moving beyond individual clinical cases to analyze the behavioral underpinnings of socially significant population-level phenomena. The analytical tools are behavior-analytic; the implications extend across clinical, educational, and social policy contexts.

Background & Context

Political polarization has been documented as increasing across multiple Western democracies over the past several decades, with research pointing to affective polarization — the degree to which members of opposing political groups view each other with hostility and contempt — as particularly consequential. Affective polarization is not simply disagreement about policy positions; it involves transformation of stimulus functions such that members of the out-group become sources of aversive stimulation that motivates avoidance, aggression, and dehumanizing verbal behavior.

RFT provides a framework for analyzing these dynamics in behavioral terms. The theory proposes that stimulus functions can be transformed through relational networks — once a stimulus is related to others in a network, its psychological functions change in ways that are not fully predictable from direct conditioning alone. Evaluative frames (good/bad, right/wrong), hierarchical frames (us/them, superior/inferior), and comparative frames (more extreme, less principled) all participate in the relational networks that constitute political identity and out-group evaluation.

Colin Harte's research sits within the broader applied RFT literature that has examined how derived relational responding shapes emotionally and motivationally significant human behavior. His analysis of political polarization extends RFT's reach into social and political psychology, a domain that has traditionally relied on cognitive and social identity frameworks that do not easily translate to behavioral intervention. The EABA Summer School context positions this work appropriately: as conceptually advanced RFT application suitable for an audience with existing RFT literacy.

For behavior analysts, the background context includes the field's historical reticence to engage with political topics — a reticence grounded in scientific conservatism and concerns about scope. Harte's analysis models how RFT can be applied to these domains rigorously and without ideological partisanship, grounding the analysis in behavioral mechanisms rather than normative political commitments.

Clinical Implications

The clinical implications of an RFT analysis of political polarization are more direct than they might initially appear. Clinicians work with clients whose behavior is shaped by polarized social environments — clients whose treatment goals may be complicated by family conflict rooted in political disagreement, clients in educational settings where peer relationships are affected by identity-based exclusion, and clients whose access to care is affected by politically polarized policy debates.

More specifically, the RFT mechanisms that Harte identifies as driving polarization — evaluative framing, in-group/out-group hierarchical responding, and the transformation of stimulus functions through derived networks — are also clinically relevant phenomena in individual treatment. Clients who engage in rigid categorical thinking about self and others, who are trapped in evaluative frames that limit their behavioral flexibility, or who show defusion deficits that make them fused with evaluative self-narratives are all presenting with clinical manifestations of the same relational mechanisms.

ACT-based interventions that target psychological flexibility — defusion from evaluative language, perspective-taking, values clarification, and acceptance — directly address the relational mechanisms implicated in polarization. BCBAs who understand the RFT analysis of polarization gain a richer theoretical basis for understanding why these ACT-aligned approaches work at the individual level and how they might be extended to group or community contexts.

The session also has implications for professional practice within the field itself. The behavior-analytic community is not immune to the polarization dynamics that Harte analyzes. Understanding these dynamics can help practitioners engage in professional disagreements more flexibly, distinguish between evidence-based reasoning and relational frame effects, and model the kind of perspective-taking and defusion that ACT-informed practice promotes in clients.

Ethical Considerations

Applying behavioral analysis to political phenomena raises specific ethical considerations. Code 1.01 (Beneficence) and Code 1.02 (Conforming with Legal and Professional Requirements) set the frame: behavior analysts have professional and ethical obligations that require careful navigation of politically sensitive territory. Analyzing the behavioral mechanisms of polarization is a legitimate scientific and educational exercise; using that analysis to advocate for specific political positions would exceed the appropriate scope of behavioral science.

Code 1.05 (Cultural Responsiveness and Diversity) is directly relevant. Political identity is deeply embedded in cultural, community, and historical contexts. An RFT analysis that treats political beliefs as simply the product of derived relational networks without attending to the legitimate grievances, historical contexts, and structural factors that shape political behavior risks a reductive framing that fails to honor the complexity of human social life. Harte's approach, grounded in conceptual rigor, navigates this by focusing on mechanisms rather than making normative judgments about political content.

Code 2.14 (Reporting Ethical Violations) and related codes around professional integrity are indirectly relevant. The polarization dynamics that Harte analyzes operate within the behavioral science community as well. When professional disputes become tribal — defined by group membership rather than evidence — the integrity of scientific discourse is compromised. Behavior analysts who understand these dynamics have a heightened responsibility to model the analytical, evidence-focused engagement that their field demands.

For BCBAs who apply this analysis in educational or training contexts, Code 2.05 (Describing Behavior-Analytic Services) requires accurate representation of what RFT-based analysis of polarization can and cannot tell us, avoiding overstatement of the intervention implications while honestly representing the analytical value of the framework.

Assessment & Decision-Making

The assessment implications of an RFT analysis of polarization are primarily conceptual rather than directly clinical — at least at the population level. However, for individual clients whose presenting concerns include rigid identity-based thinking, difficulty taking others' perspectives, high fused evaluation of self and others, or chronic engagement in polarizing verbal behavior, RFT-based assessment can characterize the specific relational repertoire features that are maintaining these patterns.

Specifically, deictic framing assessment — probing the client's ability to adopt I/you, here/there, and now/then perspectives — has direct relevance, as deficits in perspective-taking are a key mechanism in polarized thinking. Evaluative framing assessment can characterize how rigidly a client applies good/bad and us/them frames, and whether defusion strategies are able to modify those frames functionally.

At a research and intervention design level, Harte's analysis suggests assessment targets for community-level or policy-level interventions that have not yet been developed. Measuring derived relational network properties in populations — the density of evaluative framing around political stimuli, the robustness of in-group/out-group hierarchical responding — would require novel assessment methodologies that the field is only beginning to develop.

Decision-making for individual practitioners centers on two questions: how does this analysis enhance my conceptual understanding of clinically relevant phenomena, and how might the intervention implications inform my clinical work with specific clients? The translation from population-level analysis to individual clinical intervention requires careful professional judgment and explicit attention to what the research base does and does not support.

What This Means for Your Practice

Harte's session invites behavior analysts to think at a scale that individual clinical practice rarely requires — using the tools of RFT analysis to examine one of the defining social phenomena of the current moment. The direct clinical applications are emerging rather than established, but the conceptual value is immediate: a richer behavioral account of why people hold rigid evaluative beliefs, why out-group hostility is so persistent, and why perspective-taking interventions have the potential impact they do.

For practitioners interested in ACT-aligned work, this session provides theoretical grounding for understanding the relational mechanisms targeted by defusion and perspective-taking strategies. For practitioners in educational, community, and policy-adjacent settings, the session opens questions about how behavior-analytic principles might be brought to bear on socially significant population-level behavioral challenges.

The practice implication is also one of intellectual breadth. Behavior analysis at its best is a general science of behavior, not a narrow clinical technology. Sessions like this one — applying RFT to political polarization — model what it means to take the science seriously as a framework for understanding the full range of human behavior. Engaging with this material strengthens your conceptual foundation as a behavior analyst, even when the direct clinical translation requires further development.