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Design Layers Theory

Theory · All theories
Evidence · 2 claims (1 for, 1 mixed) · 2 studies (2 theoretical), q2 · 0 of 2 report an effect size · 2 claims rest on one study

Description

Gibbons (2003/2018) argues that instructional designs are not unitary objects but stacks of layers, borrowing the analogy directly from architect Stewart Brand's account of how buildings are actually structured — site, structure, skin, services, space plan, and stuff, each aging and changing at a different rate, each requiring deliberate "articulation" with the others so a change to one layer doesn't force a rebuild of the whole. Gibbons and colleagues found the same structure holds for instructional designs, identifying seven layers: model/content (subject-matter structure — concepts, rules, principles, tasks), strategy (event structures — problems, exercises, instructional periods), control (rules governing learner actions and system responses), message (main ideas, examples, feedback, explanations), representation (media selection and display structures), media-logic (the underlying program/logic implementation), and management (session control, record-keeping, evaluation planning). Each layer carries its own design goals, constructs, theoretic principles, tools, and specialized skills — which is why, over time, these skills harden into separate professional roles (a media producer, a strategy/instructional designer, a programmer).

The theory's most distinctive claim is about designer cognition: designers predictably mature through a sequence of "centrisms" — media-centrism (thinking in the vocabulary of the medium — "the page," "the hyperlink"), message-centrism (shifting focus to telling the content better — examples, analogies, emphasis), strategy-centrism (recognizing structural patterns across messages that generalize across subject matter, and governing delivery through rules — Gagné's conditions of learning fit here), and model-centrism (entering the design through the subject matter's own system and model constructs first, then adding strategy, message, and media — the stance Gibbons identifies as underlying most "new-paradigm" approaches, including problem-solving-centered and simulation-based instruction). Each phase does not discard the previous one; it adds a new primary entry point while retaining the earlier layers' constructs as secondary considerations. Which layer a designer should enter through is not universally fixed — project constraints (e.g., an assignment specifically to produce a set of videotapes) can force representation/media-logic to the front regardless of the designer's own maturity level.

Implications

Context

Requirements

  • Enough design-team maturity or explicit training to recognize which layer a design problem actually lives in, since a symptom that looks like a message problem (an explanation "not landing") can actually originate in a missing or incoherent strategy or model layer
  • Deliberate "articulation" between layers when a design is revised — changing a representation/media choice should not require rebuilding the model or strategy layer underneath it, and a design that doesn't allow this is architecturally brittle

Constraints

  • The theory describes the designer's own cognitive process and the design artifact's internal structure — it does not by itself prescribe which layer to prioritize for a given project; project constraints can override an individual designer's natural entry point
  • A design polished at the message or media layer can disguise a genuinely missing or weak strategy or model layer, producing content that reads well but doesn't hold together instructionally — the theory's main diagnostic value is spotting this mismatch, not preventing it outright

Target Learners

  • Not learner-facing directly — this is a designer/instructional-design-team framework, in the same category as TPACK and Performance Technology: its downstream effect on learners runs through the quality and coherence of the resulting instructional artifact

Target Learning Objectives

  • Not a learning objective — a diagnostic and pedagogical framework for instructional design education and design-team practice: explaining why novice designers over-index on media, and providing a vocabulary for locating where a design's incoherence actually originates

Theory

Supporting

  • Directly adapted from Stewart Brand's (1994) "shearing layers" analysis of building architecture, applied to instructional design by Gibbons, Nelson, and Richards (2000)
  • Model-centrism is described as the shared thread running through most new-paradigm, problem-solving-centered instructional approaches (Gibbons & Fairweather, 2000)

Claims

  • First Principles of Instruction — Merrill's problem-centered principles reflect a model-centered design stance in Gibbons' framework, entering through subject-matter and problem structure rather than media or message
  • Cognitive Load Theory — poor articulation between the representation/media-logic layer and the message layer is one route by which extraneous cognitive load enters a design

Examples

Key Sources

  • Gibbons, A. S. (2018). What and how do designers design? A theory of design structure and layers. In R. West (Ed.), Foundations of Learning and Instructional Design Technology. EdTech Books. https://edtechbooks.org/lidtfoundations/what_and_how_do_designers_design (originally published as Gibbons, A. S. (2003). TechTrends, 47(5), 22–25.)
  • Brand, S. (1994). How buildings learn: What happens after they're built. Penguin.
  • Gibbons, A. S., Nelson, J., & Richards, R. (2000). The architecture of instructional simulation: A design for tool construction. Center for Human-System Simulation Technical Report, Idaho National Engineering and Environmental Laboratory.
  • Gibbons, A. S. (2013). An architectural approach to instructional design. Routledge.
Page metadata
Field Value
type theory
title Design Layers Theory
description Design Layers Theory holds that an instructional design is not a single unified artifact but a stack of interacting layers — model/content, strategy, message, control, representation, media-logic, and management — each governed by its own goals, constructs, and tools, which explains why designers gravitate toward different entry points and why designs of the same content differ structurally.
status review
canonical True
generated by claude/unspecified on 2026-08-29
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