Content validity evidences in the motor coordination test with ball

Abstract The main objective of this study was to establish content validity evidences in the Motor Coordination Test with Ball (MCTB). Four Ph.D. professors and former sports coaches with academic experience in the motor coordination area took part of the validation process as experts. The experts assessed four motor tasks and graded using the Likert scale from one to five for criteria of clarity of language, practice relevance, and theoretical relevance. The content validity coefficient (CVC) has been used to determine the CVCc of each task and the CVCt for the instrument as a whole, adopting as a cutoff CVCc .70 and CVCt .80. The results showed good agreement among experts concerning “clarity of language” (CVC= .89), “practice relevance” (CVC= .81), and theoretical relevance (CVC= .86). For “practice relevance” of images and videos of task execution, there has been observed CVCt of .86 and CVCt of .95, respectively. When requested the order of relevance of coordination pressures, the agreement among experts presented the existence of at least four coordination pressures in each one of the tasks and, out of these, at least two had a higher relevance. After the calculation of the CVC, ecological validity was determined for the MCTB, accrediting it as an instrument for the assessment of motor coordination with ball in the context of sports games.摘要 本研究的主要目标是为球类动作协调测试（Motor Coordination Test with Ball, MCTB）建立内容效度证据。共有4名动作协调领域具备学术经验的哲学博士教授与前体育教练作为专家参与了效度验证流程。专家们对4项动作任务展开评估，依据语言清晰度、练习相关性与理论相关性三项评判标准，采用1至5分的李克特（Likert）量表进行评分。本研究采用内容效度系数（Content Validity Coefficient, CVC）分别计算各项任务的内容效度系数（CVCc）与整套测试的总内容效度系数（CVCt），并以0.70作为CVCc的临界值、0.80作为CVCt的临界值作为判定依据。研究结果显示，专家们在"语言清晰度"（CVC=0.89）、"练习相关性"（CVC=0.81）与"理论相关性"（CVC=0.86）三项指标上均达成良好一致性。针对任务执行的图像与视频演示材料的练习相关性，其对应的总内容效度系数分别为0.86与0.95。当要求专家对协调压力的相关性优先级进行排序时，专家共识表明：每项任务中至少存在4项协调压力，且其中至少2项具有更高的相关性优先级。在完成内容效度系数计算后，本研究进一步对MCTB开展生态效度检验，证实该工具可作为体育赛事场景下球类动作协调能力的评估工具。