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This article investigates the cross-linguistic comparability of the newly developed lexical assessment tool Cross-linguistic Lexical Tasks (LITMUS-CLT). LITMUS-CLT is a part the Language Impairment Testing in Multilingual Settings (LITMUS) battery (Armon-Lotem, de Jong & Meir, 2015). Here we analyse results on receptive and expressive word knowledge tasks for nouns and verbs across 17 languages from eight different language families: Baltic (Lithuanian), Bantu (isiXhosa), Finnic (Finnish), Germanic (Afrikaans, British English, South African English, German, Luxembourgish, Norwegian, Swedish), Romance (Catalan, Italian), Semitic (Hebrew), Slavic (Polish, Serbian, Slovak) and Turkic (Turkish). The participants were 639 monolingual children aged 3;0-6;11 living in 15 different countries. Differences in vocabulary size were small between 16 of the languages; but isiXhosa-speaking children knew significantly fewer words than speakers of the other languages. There was a robust effect of word class: accuracy was higher for nouns than verbs. Furthermore, comprehension was more advanced than production. Results are discussed in the context of cross-linguistic comparisons of lexical development in monolingual and bilingual populations.

This cross-linguistic study evaluates children's understanding of passives in 11 typologically different languages: Catalan, Cypriot Greek, Danish, Dutch, English, Estonian, Finnish, German, Hebrew, Lithuanian, and Polish. The study intends to determine whether the reported gaps between the comprehension of active and passive and between short and full passive hold cross-linguistically. The present study offers two major findings. The first is the relative ease in which 5-year-old children across 11 different languages are able to comprehend short passive constructions (compared to the full passive). The second and perhaps the more intriguing finding is the variation seen across the different languages in children's comprehension of full passive constructions. We argued, based on the present findings, that given the relevant linguistic input (e.g., flexibility in word order and experience with argument reduction), children at the age of 5 are capable of acquiring both the short passive and the full passive. Variation, however, stems from the specific characteristics of each language, and good mastery of passives by the age of 5 is not a universal, cross-linguistically valid milestone in typical language acquisition. Therefore, difficulties with passives (short or full) can be used for identifying SLI at the age of 5 only in those languages in which it has already been mastered by typically developing children. ARTICLE HISTORY

Experimental studies demonstrate that contrast helps toddlers to extend the meanings of novel adjectives. This study explores whether antonym co-occurrence in spontaneous speech also has an effect on adjective use by the child. The authors studied adjective production in longitudinal speech samples from 16 children (16-36 months) acquiring eight different languages. Adjectives in child speech and child-directed speech were coded as either unrelated or related to a contrastive term in the preceding context. Results show large differences between children in the growth of adjective production. These differences are strongly related to contrast use. High contrast users not only increase adjective use earlier, but also reach a stable level of adjective production in the investigated period. Average or low contrast users increase their adjective production more slowly and do not reach a plateau in the period covered by this study. Initially there is a strong relation between contrast use in child speech and child-directed speech, but this relation diminishes with age.

Abstract. The paper discusses the development of spoken Lithuanian corpora. In the analytical part longitudinal child language data as well as adult conversations are discussed in view of the issues that occurred during the period of data collection, transcription and coding. The data are transcribed and coded according to the requirements of CHILDES.The second part of the paper presents a corpus based analysis and provides preliminary results. The data of adult-directed speech, child-directed speech and child speech are analysed to reveal the frequency distribution of parts of speech. Spoken language is compared to written language in order to observe the tendencies of usage. The main differences and similarities within the spoken language registers are discussed as well.

How much morphological variation can children tolerate when identifying familiar words? This is an important question in the context of the acquisition of richly inflected languages where identical word forms occur far less frequently than in English. To address this question, we compared children’s (N=96, mean age 4;1, range 2;11–5;1) and adults’ (N=96, mean age 21 years) tolerance of word-onset modifications (e.g., forstug: wugandwastug) and pseudoaffixes (e.g.,kostugandstugko) in a label-extension task. Word-form modifications were repeated within each experiment to establish productive inflectional patterns. In two experiments, children and adults exhibited similar strategies: they were more tolerant of prefixes (wastug) than substitutions of initial consonants (wug), and more tolerant of suffixes (stugko) than prefixes (kostug). The findings point to word-learning strategies as being flexible and adaptive to morphological patterns in languages.

The comprehension of constituent questions is an important topic for language acquisition research and for applications in the diagnosis of language impairment. This article presents the results of a study investigating the comprehension of different types of questions by 5-year-old, typically developing children across 19 European countries, 18 different languages, and 7 language (sub-)families. The study investigated the effects of two factors on question formation: (a) whether the question contains a simple interrogative word like 'who' or a complex one like 'which princess', and (b) whether the question word was related to the sentential subject or object position of the verb. The findings show that there is considerable variation among languages, but the two factors mentioned consistently affect children's performance. The cross-linguistic variation shows that three linguistic factors facilitate children's understanding of questions: having overt case morphology, having a single lexical item for both 'who' and 'which', and the use of synthetic verbal forms.

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