Establishing stable test performance in tests from the Behavioral Assessment and Research System (BARS).
Establishing stable test performance in tests from the Behavioral Assessment and Research System (BARS).
复制标题
在行为评估和研究系统 (BARS) 的测试中建立稳定的测试性能。
作者：
D. Rohlman;S. R. Bailey;M. Brown;M. Blanock;W. Anger;L. McCauley
确定在工作场所或环境中长期暴露于神经毒性物质的人类的不良影响的研究通常在横断面研究的某个时间点对人们进行评估。最广泛使用的策略是采用从一个时间点采取的绩效指标，并将这些指标与对照组的绩效或既定的规范数据进行比较。然而，在同一测试中对相同的人进行多个比较点，除其他重要问题外，还可以区分急性-慢性-接触效应。当使用多个时间点的性能指标时，检查受试者内偏差。对于任何一种研究设计，目标都是尽量减少练习的影响，并在测试中获得稳定的表现。人口统计学变量，如年龄，教育，文化背景或种族影响神经行为测试的表现。这些变量也可能影响稳定性能的发展。不同的人群可能有不同的学习曲线，因此通过不同的练习量可以在测试中获得稳定的表现。在对不同背景的群体进行比较时，这一点尤其重要。三组，讲英语的成年人，讲西班牙语的青少年，讲西班牙语的移民青少年的表现进行了检查。每个小组在四次会议期间完成了行为评估和研究系统（BARS）的神经行为测试。重复测量ANOVA用于研究随时间的性能。测量电机性能的测试从第一阶段开始就产生了稳定的性能。涉及注意力和记忆力的更复杂的任务显示出跨会话的练习效果。
Research to identify adverse effects in humans chronically exposed to neurotoxic substances in the workplace or environment typically assesses people at one point in time in a cross-sectional study. The most widely used strategy employs performance measures taken from a single point in time and compares these with either performance of a control group or established normative data. However, multiple comparison points of the same people on the same test allow the dissection of acute--from chronic--exposure effects, among other important questions. When performance measures are used from multiple points in time, within-subject deviations are examined. For either research design, the goal is to minimize the effects of practice and to obtain stable performance on a test. Demographic variables such as age, education, and cultural background or ethnicity influence performance on neurobehavioral tests. These variables may also influence the development of stable performance. Different populations may have different learning curves so that stable performance on a test is achieved with different amounts of practice. This is especially important when making comparisons across groups that may not have equivalent backgrounds. The performance of three groups, English-speaking adults, Spanish-speaking adolescents, and Spanish-speaking migrant adolescents, was examined. Each group completed a battery of neurobehavioral tests from the Behavioral Assessment and Research System (BARS) during four sessions. Repeated measures ANOVAs were used to investigate performance across time. Tests measuring motor performance produced stable performance from the first session. More complex tasks that involved attention and memory showed a practice effect across sessions.