Buchanan J P
Genet Psychol Monogr. 1983 Feb;107(First Half):135-42.
Third grade children (40 females and 40 males) were first classified with the Matching Familiar Figures Test and then were given an Incomplete Figures Test designed to test Kagan's risk hypothesis for conceptual tempo. In the latter test, the children were shown sets of line drawings in which each successive drawing in a set revealed progressively more of the given object. They were required to guess the identity of the object after seeing each drawing by making either a high risk "outloud" guess (scored with feedback) or a low risk "whisper" guess (scored with no feedback). As predicted, reflective children made significantly fewer incorrect outloud guesses and significantly more correct whisper guesses than the impulsive children. This demonstrated that the reflective children followed a more cautious guessing strategy than the impulsive children, which provided support for Kagan's risk hypothesis.
三年级儿童（40名女性和40名男性）首先通过匹配熟悉图形测试进行分类，然后进行一项不完整图形测试，旨在检验卡根关于概念节奏的风险假设。在后者的测试中，向孩子们展示了几组线条图，其中一组中的每一幅连续的图揭示出给定物体越来越多的部分。要求他们在看到每一幅图后，通过做出高风险的“大声说出”猜测（给出反馈评分）或低风险的“小声说出”猜测（不给出反馈评分）来猜出物体的身份。正如预测的那样，反思型儿童大声说出的错误猜测明显少于冲动型儿童，小声说出的正确猜测明显多于冲动型儿童。这表明反思型儿童比冲动型儿童采用了更谨慎的猜测策略，这为卡根的风险假设提供了支持。
