The Reaction Coordinate Diagram Inventory (RCDI) has been developed to measure student thinking and confidence with reaction coordinate diagrams (RCDs) and their correspondence to reaction mechanisms. The RCDI was designed using a sequential mixed-methods protocol, such that the questions and distractors in the instrument were generated based on an analysis of qualitative semi-structured interviews in which general chemistry and organic chemistry students were asked to describe the concepts embedded in the surface features of RCDs and to use the mechanistic information encoded in RCDs. The RCDI was administered to second-semester general chemistry students (n = 443), second-semester organic chemistry students (n = 227), and second-semester physical/biophysical chemistry students (n = 45). Descriptive statistics and item function are presented for each of the three samples. Qualitative and quantitative evidence for the validity and reliability of the data generated by the RCDI are also presented. Major categories of misconceptions assessed by the RCDI and data demonstrating the prevalence of these misconceptions for all three groups of students are presented.

中文翻译：

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反应坐标图清单的开发：测量学生的思维和自信心

已经开发了反应坐标图清单（RCDI），用于通过反应坐标图（RCD）及其与反应机制的对应关系来衡量学生的思维和自信心。RCDI是使用顺序混合方法协议设计的，因此，仪器中的问题和干扰因素是基于对定性半结构式访谈的分析而生成的，在该访谈中，要求一般化学和有机化学专业的学生描述嵌入在其中的概念。 RCD的表面特征，并使用RCD中编码的机械信息。RCDI适用于第二学期的普通化学学生（n = 443），第二学期的有机化学学生（n = 227）和第二学期的物理/生物物理化学学生（n = 45）。给出了三个样本中每个样本的描述性统计量和项目函数。还提供了由RCDI生成的数据的有效性和可靠性的定性和定量证据。RCDI评估了误解的主要类别，并提供了证明这三类学生普遍存在的误解的数据。