Why One Student Stays Silent: A New Model Treats Motivation as a Complex Dynamic System

Why does a confident, high-achieving student suddenly fall silent in a class discussion she is fully prepared for? A sweeping review published in Educational Psychology Review argues that most motivation theories cannot answer that question, because they treat motivation as a set of independent variables rather than as a living system. Avi Kaplan of Temple University and Joanna K. Garner of Old Dominion University propose instead that motivated action is an emergent property of a complex dynamic system, and they elaborate a framework—the Dynamic Systems Model of Role Identity, or DSMRI—that integrates culture and the individual into a single explanatory architecture. The paper, published open access in October 2026, is both a critique of conventional motivation research and a technical blueprint for studying human action as it actually unfolds.

The authors begin by cataloging a long-standing fracture in motivation science. Behaviorist theories locate motivation in learned stimulus-response contingencies; implicit-need theories in stable personality dispositions; social-cognitive theories in beliefs, goals, and self-regulation; and sociocultural perspectives in participation, interaction, and cultural structures. Each framework foregrounds a different unit of analysis and backgrounds the rest, producing debates about whether motivation is individual or social, stable or malleable, conscious or unconscious. Kaplan and Garner contend these either-or debates are unconstructive, because real motivated action involves all of these dimensions simultaneously, with their relative salience shifting from moment to moment. Adding sociocultural variables to individual-level models, or individual differences to sociocultural accounts, does not resolve the problem; what is required is a paradigm shift.

That paradigm, they argue, is the Complex Dynamic Systems approach, a branch of complexity science that arose as an alternative to reductionist, linear cause-effect explanation. Several of its core assumptions carry direct consequences for motivation theory. First, the elements of a motivational system are interdependent rather than merely interactive: a change in one element, such as self-efficacy, propagates through goals, values, emotions, and perceived action possibilities, and the same perturbation may produce increased motivation, no change, or even diminished motivation depending on the system’s state. Second, motivated action is irreducible to isolated constructs, so studying a single variable or a single construct-behavior link cannot capture the phenomenon. Third, the system is nonlinear: a trivial change in task difficulty can trigger total disengagement, while an intensive intervention may yield almost nothing.

A further cluster of assumptions concerns stability and change. What looks like stability is better understood as dynamic stability—the continuous re-emergence of a system into a similar state, in the way a whirlpool holds its form while its water constantly turns over. This allows the framework to reconcile durability with sudden malleability. Systems are largely self-organizing, arising from the co-action of their elements without a central controller, yet in human systems bottom-up self-organization co-acts with top-down agency and self-regulation. This dissolves the false dichotomy between automatic, unconscious processes and deliberate, agentic ones: both operate together, and motivation is reducible to neither. The authors also borrow the concepts of attractor and repellor states. An attractor is a configuration whose internal feedback loops reinforce themselves, so the system keeps returning to it; a repellor is a configuration whose internal tensions propel the system away. Patterns, in this view, are not established by averaging across people but by mapping each system’s landscape of possible states and the paths between them.

The DSMRI translates these assumptions into a two-level explanation of the foundational motivational question: why does this person act this way in this situation? At the sociocultural level, people generally act according to the role they occupy in a cultural activity system—a framing the authors draw from Cultural-Historical Activity Theory. Roger Barker’s observation that people behave ‘post-office’ when they enter a post office captures the idea: shared cultural understandings of a situation, its roles, purposes, and norms provide a frame for interpretation and action. But this level alone cannot explain a particular individual, because it predicts what students in general do in discussions, not what one particular student does in this discussion. At the individual level, each person occupying the same role constructs an idiosyncratic role identity—one’s meaning of oneself in a sociocultural role within a particular cultural situation—and it is this role identity, itself a complex dynamic system, whose emergent behavior is motivated action. Culture and individual are thus not two additive sets of constructs but two facets of a single emergent phenomenon.

The model’s conception of culture is deliberately rich. The authors integrate four complementary perspectives: Martin Maehr’s account of culture as collective meaning-making that mediates beliefs about situations, selves, and action possibilities; symbolic interactionism’s view of culture as socially generated symbols within leveled social structures that frame role identities; treatments of culture itself as a complex dynamic system, notably Strauss and Quinn’s connectionist account showing how distributed meanings can be simultaneously durable and changeable; and Cultural-Historical Activity Theory, which supplies the framing structure of an activity system with six interrelated elements—subject, object, tools, community, rules, and division of labor. They also invoke Robert Serpell’s three metaphors of culture as Womb, Language, and Forum, insisting that cultures are all three at once: stable surroundings, symbolic systems, and sites of ongoing negotiation. The result is a conception of the classroom, the museum, or the workplace as a complex, dynamic, symbolically mediated activity system that frames the emergence of its participants’ role identities even as those participants reshape it.

At the individual level, the role identity system is characterized along three interdependent facets: content, structure, and process. Its content comprises four overlapping categories of elements—ontological and epistemological beliefs about what is true and how knowledge is grounded; purpose and goals, including overarching purpose and achievement goal orientations; self-perceptions and self-definitions, including competencies, values, interests, and social identities; and perceived action possibilities, the behaviors the agent believes are available and appropriate. Established motivational constructs such as self-efficacy, task value, and achievement goals are not discarded; they are relocated as dynamic, situated elements within this system, often straddling categories. The structural facet describes a nested, fractal-like hierarchy of role identities, from momentary ones such as ‘a student responding to a question’ up to ‘a person in the world,’ with relations of accord or tension among elements. When elements align, the agent experiences coherence; when they conflict, the experience is one of identity tension, typically accompanied by negative emotion and experienced as a dilemma about how to act.

The process facet explains how such configurations shift. A role-identity trigger—an event, an action’s consequences, or an internal process—perturbs an element, and because elements are interdependent, change can be nonlinear and disproportionate to the trigger. The system strives toward coherence, gravitating to attractor states and moving away from repellors, though it may pass through uncomfortable periods of fragmentation along the way. The authors illustrate with their hypothetical student, Maya, who falls silent during a discussion of a contested historical event tied to her own racial-ethnic group. A construct-based analysis might ask about her self-efficacy or belonging; a DSMRI analysis instead traces a configuration in which a classmate’s comment activates beliefs about how others view the event, raises the salience of her group membership, shifts her goals from demonstrating knowledge to protecting dignity and relationships, and narrows her perceived action possibilities until silence becomes the viable choice. Her habitual participation is an attractor; the comment perturbs her system into a repellor of tension; and silence emerges as a new, momentary attractor. The model also specifies four control parameters framing this emergence: the agent’s implicit dispositions, plus three features of the activity system—its subject domain, its social context, and its cultural setting and tools.

The framework is not merely theoretical. The authors describe its application to a Smithsonian exhibition on inventiveness, designed to perturb visitors’ habitual passive ‘information recipient’ role identity and scaffold a new attractor built around self-definitions as inventive people, and to a year-long professional development program on teaching the difficult history of school desegregation, where the same program produced sharply different identity trajectories for teachers of different positionalities. The implications are far-reaching: researchers are urged toward two-phase designs that alternate between activity-system analysis and idiographic role-identity analysis, and toward intensive longitudinal methods capable of capturing qualitative shifts between motivational states. Educators are called to treat classrooms as deliberately constructed cultural activity systems, reshaping mediating tools—writing before speaking, rehearsing contested positions in small groups—to perturb maladaptive attractors and scaffold adaptive ones. Policy, the authors suggest, works best when it targets the control parameters shaping activity systems rather than isolated behaviors. In an era increasingly dominated by a-theoretical, data-driven algorithmic models of learning, Kaplan and Garner’s argument lands as both a technical contribution and an ethical one: understanding why a particular person acts in a particular moment requires preserving the full complexity of the person within their culture, not averaging it away.

Subject of Research: A complex dynamic systems model integrating culture, identity, and motivation to explain situated human action

Article Title: A Complexity Perspective on Culture, Identity, and Motivation: The Dynamic Systems Model of Role Identity

Article References: Kaplan, A., & Garner, J. K. (2026). A Complexity Perspective on Culture, Identity, and Motivation: The Dynamic Systems Model of Role Identity. Educational Psychology Review, 38(1), Article 125. https://doi.org/10.1007/s10648-026-10221-9

Image Credits: AI Generated

DOI: 10.1007/s10648-026-10221-9

Keywords: motivation, role identity, complex dynamic systems, culture, educational psychology, activity theory, attractor states, self-organization, emergence, identity formation, DSMRI, sociocultural theory