Longitudinal study
纵向研究，一种在较长时间内持续追踪同一批参与者的研究设计，用于观察现象、实践或体验如何随时间演变、沉淀。在 HCI 中尤其适合研究适应、学习与重大生活转型。
English Definition
"A research design that follows the same participants over an extended period to observe how phenomena, practices, or experiences change, develop, or become situated over time."
用法说明 · 针对中文母语者
常与 cross-sectional study（横截面研究）相对。在设计研究中强调过程与时间维度，能捕捉一次性访谈难以发现的变化轨迹。
真实用例 · 4 条
"This paper presents findings from an eight-month longitudinal ethnographic study with five newly arrived North Korean defector women."
"Our work extends this by taking a holistic, longitudinal approach to understanding refugees' process of transitioning into a digitally enabled life."
"Such longitudinal engagement is widely advocated in migration scholarship to account for how challenges unfold and become situated over time during major life transitions."
"Drawing on longitudinal fieldwork, our findings reveal how newly arrived NKDs transition across radically different digital ecosystems."