Usability and Perceived Persuasiveness in Pediatric Oral Care

1) Study overview and design
This dataset comes from a randomized two-period AB/BA within-subject crossover human factors evaluation. Each participant experienced both conditions: Condition A (Control) and Condition B (eHealth) within a standardized protocol. The repository includes (i) paired subjective construct scores for both conditions (N=181) and (ii) a video-coded behavioral subsample (N=32) with task-level records for tasks T1–T5.
2) Research hypotheses (mapped to variables)
H1 (condition main effect): Compared with Condition A, Condition B improves key subjective mechanism indicators (e.g., perceived usability satisfaction, perceived persuasiveness, self-efficacy) and yields better task performance (higher completion, shorter time, fewer errors and assistance).
Variables: PUS/PP/SE (primary), PA/PU/PC (secondary), and behavioral metrics (completion/time/error/assist).
H2 (age-related differences): The magnitude of the condition effect may vary by developmental stage (age group).
Variables: age_group + B–A differences for subjective and behavioral outcomes.
PC as a key “negative” result with equivalence testing: Perceived credibility (PC) is expected to show no meaningful change; therefore, an equivalence test (TOST) is provided in addition to a difference test.
Variables: PC scores under A and B; TOST based on paired differences (B−A).

1）研究概况与实验设计
本数据集源自一项随机双周期AB/BA被试内交叉人机工效评估实验。所有参与者均在标准化实验流程下完成两种实验条件：A组（对照组）与B组（电子健康(eHealth)组）。本数据集包含两部分内容：(i) 两种实验条件下的配对主观构念得分（样本量N=181）；(ii) 经视频编码的行为学子样本（样本量N=32），涵盖T1至T5共5项任务的任务级记录。
2）研究假设（附变量对应关系）
H1（条件主效应）：与A组相比，B组可优化核心主观机制指标（如感知可用性满意度、感知说服力、自我效能感），并提升任务绩效（完成率更高、耗时更短、错误与求助次数更少）。
对应变量：PUS/PP/SE（主要变量）、PA/PU/PC（次要变量），以及行为学指标（完成率/耗时/错误数/求助次数）。
H2（年龄相关差异）：条件效应的强度可能随发展阶段（年龄组）的不同而存在差异。
对应变量：年龄组 + 主观与行为学结果的B-A差值。
感知可信度(Perceived Credibility, PC)作为关键“阴性”结果，需结合等效性检验：预期感知可信度不会出现显著变化，因此除差值检验外，本数据集还提供了等效性检验(TOST)方法。
对应变量：A、B两组下的PC得分；基于配对差值（B−A）的TOST检验。