We conducted a scoping review of methods that have been used to measure infants' (under age 2) moral development. We aimed to assess the state of knowledge through a thematic overview of the methodologies that have been used and the specific constructs studied. We found that the majority of studies used an experimental methodology, and within this, infants' actual behaviour and their evaluations were the most common sources of information. An evidence map depicting concept delineation between studies and presenting concepts as related to an underlying moral sense, as prosocial (emotion and behaviour), and as antisocial components (emotion and behaviour) is provided. Just under one-third of studies were longitudinal, and a high percentage reported a statistically significant longitudinal relation for moral development. Results highlight a need for measures that can be used longitudinally at different stages of development so that trajectories can be observed and mapped to behavioural outcomes, such as conduct problems.

中文翻译：

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衡量婴儿期的道德：范围界定方法回顾

我们对用于衡量婴儿（2 岁以下）道德发展的方法进行了范围审查。我们旨在通过对已使用的方法和研究的具体结构的主题概述来评估知识状态。我们发现大多数研究都使用了实验方法，其中婴儿的实际行为及其评估是最常见的信息来源。提供了一个证据图，描绘了研究之间的概念描述，并提供了与潜在道德感、亲社会（情感和行为）以及反社会成分（情感和行为）相关的概念。不到三分之一的研究是纵向的，并且很大比例的研究报告了道德发展的具有统计学意义的纵向关系。