Surrogate task
替代任务——研究中使用的、受控的模拟性任务，用来替代真实活动以隔离特定认知或行为变量；常用于驾驶模拟与人因研究。
English Definition
"A controlled, stand-in task used in research to approximate a real-world activity, allowing experimenters to isolate specific cognitive or behavioral factors; common in driving and HCI studies."
用法说明 · 针对中文母语者
在 HCI 与汽车研究中常与「ecological validity」（生态效度）成对讨论：替代任务可控但生态效度低，真实任务反过来。中文论文中通常保留英文。
真实用例 · 3 条
"Previous studies on driving distractions have incorporated a variety of secondary tasks such as visual search (ISO14198) to mimic demanding manual-visual activities"
"Other surrogate tasks to induce cognitive load include working memory games on a tablet and complex sentence comprehension."
"For our study, we choose more organic activities closer to real-life NDRTs in order to elicit higher engagement and obtain more natural responses."