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---
title: "Incrementality Testing"
type: concept
tags: ["paid-media", "attribution", "measurement", "testing"]
last_updated: 2026-04-25
---
## Aliases
- 增量测试
- Incrementality
- Holdout Testing
- Geo Split Testing
## Overview
增量测试是一种通过对照组holdout实验设计验证付费广告是否带来"净新增"转化的方法论。核心目的是避免"转移归因"——即付费广告只是截获了本来会发生的有机转化,而非真正带来增量价值。
## Definition
常见方法:
- **Holdout控制组**:随机选取一部分目标受众,不投放广告,对比两组转化率差异
- **Geo Split地理拆分**:在不同地理区域分别开关广告,隔离外部变量
- **Matched Market匹配市场**:选择相似市场,一方投放一方对照
增量 = 实验组转化率 - 对照组转化率(排除自然流量后)
## Connections
- [[Paid Media Paid Social Strategist]] Agent 在跨渠道验证中强调增量测试
- 与 [[Conversions API]] 数据配合可更准确地测量增量
- 与 [[PaidMediaPpcStrategist]] 的增量测试框架geo-split/holdout/matched market方法论一致
- 避免 [[Audience Overlap Analysis]] 导致的重复计算问题