Effect sizes are an important outcome of quantitative research, but few guidelines exist that explain how researchers can determine which effect sizes are meaningful. Psychologists often want to study effects that are large enough to make a difference to people's subjective experience. Thus, subjective experience is one way to gauge the meaningfulness of an effect. We propose and illustrate one method for how to quantify the smallest subjectively experienced difference—the smallest change in an outcome measure that individuals consider to be meaningful enough in their subjective experience such that they are willing to rate themselves as feeling different—using an anchor-based method with a global rating of change question applied to the positive and negative affect scale. We provide a step-by-step guide for the questions that researchers need to consider in deciding whether and how to use the anchor-based method, and we make explicit the assumptions of the method that future research can examine. For researchers interested in people's subjective experiences, this anchor-based method provides one way to specify a smallest effect size of interest, which allows researchers to interpret observed results in terms of their theoretical and practical significance.

效应大小是定量研究的重要成果，但很少有指导原则可以解释研究人员如何确定哪些效应大小有意义。心理学家经常想研究足够大的影响，以改变人们的主观体验。因此，主观经验是衡量效果有意义性的一种方法。我们提出并说明了一种用于量化主观经历最小差异的方法-结果衡量的最小变化，使个人认为在主观经验上足够有意义，以至于他们愿意给自己打分，将其感觉为与众不同-使用基于锚的方法，对变化的正面和负面因素应用整体变化问题影响规模。我们为研究人员在决定是否以及如何使用基于锚的方法时需要考虑的问题提供了逐步指南，并明确提出了该方法的假设，可供将来的研究进行检验。对于对人们的主观经验感兴趣的研究人员，这种基于锚点的方法提供了一种指定最小效应大小的方法，这使研究人员可以从理论和实践意义上解释观察到的结果。