--- title: Local Average Treatment Effect (LATE) - Definition | RGM® Glossary url: https://realgrowthmatters.com/glossary/local-average-treatment-effect-late/ updated: 2026-06-10 source_html: https://realgrowthmatters.com/glossary/local-average-treatment-effect-late/ --- Growth Glossary — Definition SHT LOCAL-AVERAGE- # Local Average Treatment Effect (LATE) Treatment effect for compliers. A working definition from the RGM marketing glossary. Treatment effect for compliers. Term : Local Average Treatment Effect (LATE) Field : Statistics & Analytics Category : Statistics & Analytics ## What it means Worth a slow read.Local Average Treatment Effect (LATE) is an analytical concept. Fix what it covers before the team debates tactics, and the rest of the conversation gets easier. Treatment effect for compliers. Within Statistics & Analytics, Local Average Treatment Effect (LATE) is an analytical concept. Get the definition right and the work that follows gets easier. ## Where the mechanics matter Hold that thought.There is no single setting for Local Average Treatment Effect (LATE). It bends to the audience, the channels, and the wider plan. Local Average Treatment Effect (LATE) behaves unlike a fixed rule. An early-stage brand and a mature one will apply Local Average Treatment Effect (LATE) on different terms. The mechanics follow the inputs around it. Treat Local Average Treatment Effect (LATE) as a buzzword and the reporting misleads; agree on it and the numbers hold. One rule always holds. Settle the scope of Local Average Treatment Effect (LATE) up front, then build the plan. Get it backwards and Local Average Treatment Effect (LATE) becomes a word everyone uses and no one shares. Pick one definition. ## When it matters Hold that thought.Local Average Treatment Effect (LATE) earns attention at three moments: setting budget, choosing a metric, comparing options. Away from those, it waits. Bring Local Average Treatment Effect (LATE) in when a live choice hangs on it. In statistics & analytics work, that usually means one of three moments. Away from a decision, Local Average Treatment Effect (LATE) is background, not a lever. 1. **Setting budget.** Local Average Treatment Effect (LATE) marks where added spend will work hardest. 2. **Choosing a metric.** Local Average Treatment Effect (LATE) checks that the figure is not just noise. 3. **Comparing options.** Local Average Treatment Effect (LATE) adjusts a compare so the gap is honest. ## A worked example Pick one definition.The example below traces Local Average Treatment Effect (LATE) through a real Duolingo scenario, with real limits and a number to read at the end. Take Duolingo. During a power-analysis discipline, the team made Local Average Treatment Effect (LATE) the deciding input, not an afterthought. They set a baseline first, agreed one definition of Local Average Treatment Effect (LATE), and only then read the result: fewer false wins shipped. The number matters less than the order. Example walk-through for Local Average Treatment Effect (LATE) -- figures illustrative, RGM analysis | Stage | The step taken | What it bought | | Baseline | Read the starting point before any change to Local Average Treatment Effect (LATE). | A reference to judge against. | | Define | Agreed a single definition of Local Average Treatment Effect (LATE). | No room for scope drift. | | Act | A power-analysis discipline — one variable. | One change, a clean read. | | Result | Fewer false wins shipped | A call backed by the read. | These Local Average Treatment Effect (LATE) numbers are illustrative -- RGM analysis. The structure travels; the specific figures do not. ## Mistakes worth avoiding Read that twice.The errors with Local Average Treatment Effect (LATE) are predictable: one blanket rule, no context, chasing the word, raw benchmarks. Each is avoidable. - **One blanket rule.** Applying Local Average Treatment Effect (LATE) the same way everywhere. Split it by audience, channel, and business model. - **Bare numbers.** Showing Local Average Treatment Effect (LATE) on its own. Context is what makes it readable. - **Vanity focus.** Gaming Local Average Treatment Effect (LATE) instead of the result. Tie it to business value. - **Apples to oranges.** Comparing Local Average Treatment Effect (LATE) across firms raw. Adjust for pricing and cycle before you read it. ## Frequently asked questions What does Local Average Treatment Effect (LATE) mean? Treatment effect for compliers. Settle what Local Average Treatment Effect (LATE) covers first; the strategy follows from there. Why does Local Average Treatment Effect (LATE) matter? Local Average Treatment Effect (LATE) matters because vague vocabulary breaks strategy. A precise, shared definition keeps a team aligned. How is Local Average Treatment Effect (LATE) used in practice? Teams put Local Average Treatment Effect (LATE) to work on a spend split, a metric, or a head-to-head call. See the Duolingo walk-through above. What goes wrong with Local Average Treatment Effect (LATE) most often? Chasing Local Average Treatment Effect (LATE) as a goal and benchmarking it raw. Both bury the real trade-off underneath. What does Local Average Treatment Effect (LATE) mean? : Treatment effect for compliers. Settle what Local Average Treatment Effect (LATE) covers first; the strategy follows from there. Why does Local Average Treatment Effect (LATE) matter? : Local Average Treatment Effect (LATE) matters because vague vocabulary breaks strategy. A precise, shared definition keeps a team aligned. How is Local Average Treatment Effect (LATE) used in practice? : Teams put Local Average Treatment Effect (LATE) to work on a spend split, a metric, or a head-to-head call. See the Duolingo walk-through above. ### Related guides ### Related terms