Although many visual stimulus databases exist, none has data on item similarity levels for multiple items of each kind of stimulus. We present such data for 50 sets of grayscale object photographs. Similarity measures between pictures in each set (e.g., 25 different buttons) were collected using a similarity-sorting method (Goldstone, Behavior Research Methods Instruments & Computers, 26(4):381–386, 1994). A validation experiment used data from 1 picture set and compared responses from standard pairwise measures. This showed close agreement. The similarity-sorting measures were then standardized across picture sets, using pairwise ratings. Finally, the standardized similarity distances were validated in a recognition memory experiment; false alarms increased when targets and foils were more similar. These data will facilitate memory and perception research that needs to make comparisons between stimuli with a range of known target–foil similarities.
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机译：尽管存在许多视觉刺激数据库，但没有一个数据库具有每种刺激的多个项目的项目相似度数据。我们为50套灰度物体照片提供此类数据。使用相似性排序方法（Goldstone，Behavior Research Methods Instruments＆Computers，26（4）：381-386，1994）收集每组图片之间的相似性度量（例如25个不同的按钮）。验证实验使用了1个图片集中的数据，并比较了标准成对测量的响应。这表明了一致。然后，使用成对评级将图片集之间的相似度分类标准标准化。最后，在识别记忆实验中验证了标准化的相似距离。当目标和金属箔更加相似时，虚假警报会增加。这些数据将有助于记忆和知觉研究，这些研究需要在刺激与一系列已知靶标-箔相似性之间进行比较。
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