1. What Is a Transdisciplinary Approach?

Why the word matters

"Transdisciplinary" gets used loosely. Sometimes it means "we have people from different departments on the project." Sometimes it means "we used both surveys and interviews." Neither is quite right. The word is doing real work, and getting the work right matters because the methods that follow depend on it.

A useful starting frame: disciplines are useful but partial. Every discipline gives you a single story about a phenomenon. Epidemiology tells you how many. Sociology tells you how it spreads. Anthropology tells you what it means. Each story is true; none is sufficient for problems where the meaning, spread, and count are entangled.

The ladder: mono → multi → inter → transdisciplinary

Think of disciplinary integration as a ladder.

• Mono-disciplinary: one discipline owns the question, the methods, and the answer. Most published research is mono-disciplinary even when it cites broadly.
• Multi-disciplinary: multiple disciplines work on the same problem in parallel and report side by side. Co-located, not integrated.
• Inter-disciplinary: disciplines exchange concepts and methods. The product is a hybrid: integrated at the level of methods or theory.
• Transdisciplinary: disciplinary integration plus non-academic partners with decision rights — community, practice, indigenous knowledge — who help define the problem, the methods, and what counts as success.

The transdisciplinary rung is the one most often claimed without being practiced. The diagnostic question: who held decision rights on the research question? If only academics, the work is at most interdisciplinary, regardless of how many community advisors were consulted.

Why we need it: complex vs. complicated problems

A complicated problem has many parts but a knowable answer. Launching a rocket is complicated. We can solve it with mono- or multi-disciplinary methods.

A complex problem has interacting actors whose behavior changes the system. Homelessness, climate change, vaccine hesitancy, structural racism: these are complex. Interventions feed back into the system; success criteria are contested; cause-and-effect chains loop. Methods designed for complicated problems systematically underperform on complex ones.

Transdisciplinary methods exist for complex problems. They admit multiple ways of knowing because the problem has multiple stakeholders, each with valid evidence the other lacks.

The 5 Lenses Framework

Throughout this course we'll use a five-lens framing:

1. Systems thinking — map the interconnections, not just the parts
2. Complexity thinking — recognize emergence, non-linearity, feedback
3. Design thinking — empathize with stakeholders, prototype, iterate
4. Critical thinking — name whose power and history shape the problem
5. Integrative thinking — synthesize across the four into actionable understanding

The lenses are not optional add-ons. They're how a transdisciplinary researcher inhabits the work.

Five ways of knowing

Closely related: research recognizes more than one source of evidence.

• Scientific — quantitative measurement, replicable observation
• Experiential — first-person accounts of lived reality
• Cultural — community knowledge held collectively, often unwritten
• Intuitive — practitioner pattern recognition built over time
• Creative — arts-based representations that surface what other modes can't reach

A transdisciplinary design admits more than one of these by intention. A study that only uses scientific evidence is mono-epistemic, even if it has an interdisciplinary team.

The "single story" trap

Chimamanda Adichie's "danger of a single story" applies to research. When a problem has one dominant frame — economic, medical, behavioral — every method tilts toward that frame, and every finding reinforces it. Transdisciplinary work is, in part, the discipline of refusing the single story: forcing yourself to ask which other frames are valid and what evidence they admit.

A worked example

Take diabetes prevention in a low-income U.S. neighborhood.

The mono-disciplinary frame might be behavioral: how do we get individuals to eat better and exercise more? The intervention is education. The outcome is HbA1c.

The transdisciplinary frame would start by asking residents what makes diabetes prevention hard here. The answer often includes food access, the geography of grocery stores, work schedules that preclude home cooking, family caregiving patterns, the cost-benefit of buying cheap calories. The "intervention" might be a community garden, a corner-store partnership, a clinic-school link, or a policy change about SNAP benefits. The outcome includes HbA1c but also community-defined indicators like food sovereignty or family cohesion.

Both frames produce findings. Only the second is likely to produce change.

Closing

The rest of the course unpacks how. Module 1 builds the paradigm vocabulary. Module 2 covers research design as ecosystem. Module 3 integrates methodologies. Module 4 turns to analysis and interpretation. Module 5 closes with ethics, communication, and impact.

What you carry from this lesson: disciplines tell single stories; transdisciplinary work refuses the single story by admitting non-academic stakeholders into the decision-making and by widening what counts as evidence. The work is structural, not rhetorical.