Carlin Michael T, Costello Mack S
Department of Psychology, Rider University, 2083 Lawrenceville Road, Lawrenceville, NJ 08648 USA.
Perspect Behav Sci. 2021 Nov 22;45(1):187-207. doi: 10.1007/s40614-021-00317-8. eCollection 2022 Mar.
Selecting a quantitative measure to guide decision making in single-case experimental designs (SCEDs) is complicated. Many measures exist and all have been rightly criticized. The two general classes of measure are overlap-based (e.g., percentage nonoverlapping data) and distance-based (e.g., Cohen's ). We compare several measures from each category for Type I error rate and power across a range of designs using equal numbers of observations (i.e., 3-10) in each phase. Results showed that Tau and the distance-based measures (i.e., RD and ) provided the highest decision accuracies. Other overlap-based measures (e.g., PND, dual-criterion method) did not perform as well. It is recommended that Tau be used to guide decision making about the presence/absence of a treatment effect, and RD or be used to quantify the magnitude of the treatment effect.
The online version contains supplementary material available at 10.1007/s40614-021-00317-8.
在单案例实验设计(SCEDs)中选择一种定量测量方法来指导决策是复杂的。存在许多测量方法,并且所有这些方法都受到了合理的批评。测量方法的两个一般类别是基于重叠的(例如,非重叠数据百分比)和基于距离的(例如,科恩d值)。我们在每个阶段使用相等数量的观察值(即3 - 10个),针对一系列设计比较了每个类别中的几种测量方法的I型错误率和功效。结果表明,Tau和基于距离的测量方法(即RD和d值)提供了最高的决策准确性。其他基于重叠的测量方法(例如,PND,双标准方法)表现不佳。建议使用Tau来指导关于治疗效果是否存在的决策,使用RD或d值来量化治疗效果的大小。
在线版本包含可在10.1007/s40614 - 021 - 00317 - 8获取的补充材料。