Department of Psychology, Gösta Ekman Laboratory, Stockholm University, Stockholm, Sweden.
Decision Research, Eugene, Oregon, United States of America.
PLoS One. 2022 Mar 16;17(3):e0264830. doi: 10.1371/journal.pone.0264830. eCollection 2022.
Measurements of human attitudes and perceptions have traditionally used numerical point judgments. In the present study, we compared conventional point estimates of weight with an interval judgment method. Participants were allowed to make step by step judgments, successively converging towards their best estimate. Participants estimated, in grams, the weight of differently sized boxes, estimates thus susceptible to the size-weight illusion. The illusion makes the smaller of two objects of the same weight, differing only in size, to be perceived as heavier. The self-selected interval method entails participants judging a highest and lowest reasonable value for the true weight. This is followed by a splitting procedure, consecutive choices of selecting the upper or lower half of the interval the individual estimates most likely to include the true value. Compared to point estimates, interval midpoints showed less variability and reduced the size-weight illusion, but only to a limited extent. Accuracy improvements from the interval method were limited, but the between participant variation suggests that the method has merit.
传统上，人类态度和感知的测量采用数值点判断。在本研究中，我们将传统的重量点估计与区间判断方法进行了比较。参与者可以逐步做出判断，逐步逼近最佳估计。参与者以克为单位估计不同大小的盒子的重量，因此这些估计容易受到大小重量错觉的影响。该错觉使得两个相同重量的物体中较小的一个，仅在大小上有所不同，被认为更重。自选区间法要求参与者判断真实重量的最高和最低合理值。接下来是一个拆分过程，连续选择选择个人最有可能包含真实值的区间的上半部分或下半部分。与点估计相比，区间中点的变异性更小，大小重量错觉也有所减轻，但程度有限。区间法的准确性提高有限，但参与者之间的差异表明该方法具有一定的价值。
