In the latter half of the twentieth century, school textbooks globally embraced growing emphases on the experiences and rights of diverse marginalized groups. Textbook discussions of diversity earlier in the century, however, have seldom been studied. We use descriptive statistics and regression to examine diversity foci in 978 textbooks from 93 countries published between 1900 and 2013. Unlike previous research, which emphasizes linear growth in diversity-oriented curricula since World War II, our findings reveal a wavelike pattern. We document an early expansionist wave beginning in the 1920s, which was followed by stagnation and decline midcentury before rising again in recent decades. We situate the early expansion within global activities dedicated to diversity in the interwar years and the midcentury contraction within the aftermath of World War II and the geopolitical climate of the Cold War. We contribute to the literature by illuminating the historical ebb and flow of inclusionary educational orientations.

中文翻译：

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多样性的浪潮：社会科学教科书中对边缘化群体及其权利的描述，1900-2013

在 20 世纪下半叶，全球学校教科书越来越强调不同边缘化群体的经验和权利。然而，本世纪早期关于多样性的教科书讨论很少被研究。我们使用描述性统计和回归来检查 1900 年至 2013 年间出版的 93 个国家/地区的 978 部教科书中的多样性焦点。与之前的研究强调自二战以来以多样性为导向的课程的线性增长不同，我们的研究结果揭示了一种波状模式。我们记录了 1920 年代开始的早期扩张主义浪潮，随后是本世纪中叶的停滞和衰退，然后在近几十年再次上升。我们将早期扩张置于两次世界大战之间致力于多样性的全球活动中，以及在第二次世界大战和冷战的地缘政治气候之后的本世纪中叶收缩。我们通过阐明包容性教育方向的历史潮起潮落来为文献做出贡献。