Bilingual children's total vocabulary in each of their languages is often smaller than that of monolinguals. In their seminal study, Bialystok et al. (2010. 'Receptive vocabulary differences in monolingual and bilingual children.' "Bilingualism: Language and Cognition" 13 (4): 525-531) divided children's vocabulary into 'home' and…

Phonetic imitation is a ubiquitous process in speech production. Speakers have a strong tendency to imitate their interlocutors both in a native and a non-native language. It is especially important in acquiring non-native speech, because it allows forming new sound categories. In the current study we investigated whether and to what extent Polish…

The evaluation of sign language proficiency needs to be based on measures with well-established psychometric proprieties. To date, no valid and reliable test is available to assess Polish Sign Language ("Polski Jezyk Migowy," PJM) skills in deaf children. Hence, our aim with this study was to adapt the British Sign Language Receptive…

The Polish school education system makes a distinction between two types of assessment: (1) Intra-school or internal assessment; and (2) External assessment. The idea of introducing external examinations into the Polish school education system emerged in 1992. This was directly inspired by study visits to the United Kingdom and the Netherlands…