Our main objective was to analyze the role of imageability in relation to the age of acquisition (AoA) of nouns and verbs in Spanish-speaking children with Down syndrome (DS) and their peers with typical development (TD). The AoA of nouns and verbs was determined using the MacArthur-Bates CDIs adapted to the profile of children with DS. The AoA was analyzed using a linear mixed-effect model, including factors of imageability, group, and word class, and controlling for word frequency and word length. This analysis showed that high imaginable and short words were acquired early. Children with DS acquired the words later than TD peers. An interaction between imageability and group indicated that the effect of imageability was greater in the DS group. We discuss this effect considering DS children’s phonological memory difficulties. The overall results confirm the role that imageability and word length play in lexical acquisition, an effect that goes beyond word class.

我们的主要目标是分析患有唐氏综合症 (DS) 的西班牙语儿童及其具有典型发育 (TD) 的同龄人的形象性与名词和动词习得年龄 (AoA) 的关系。名词和动词的 AoA 是使用适合 DS 儿童概况的 MacArthur-Bates CDI 确定的。使用线性混合效应模型分析迎角，包括可成像性、组和词类因素，并控制词频和词长。这项分析表明，高可想象的单词和简短的单词是很早就习得的。患有 DS 的孩子比 TD 的同龄人更晚学会单词。成像能力和组之间的相互作用表明，成像能力的影响在 DS 组中更大。我们考虑 DS 儿童的语音记忆困难来讨论这种效应。总体结果证实了可形象性和词长在词汇习得中的作用，这种作用超越了词类。