Relationship between lexicon and grammar in children and youth who use augmentative and alternative communication

What relationships exist between nouns and verbs and the use of prepositions, adverbs, and adjectives in children and adolescents who use speech generating devices?

The relationships between the use of nouns and verbs, and other word classes have been well established in the typical language development literature. However, questions remain as to whether the same relationships are seen in the language use of individuals who use graphic symbol-based augmentative and alternative communication (AAC). The aim of the study was to examine relationships between the use of verbs and nouns, and the use of prepositions, adverbs, and adjectives through a secondary analysis of language transcripts taken from 12 children and adolescents who used aided AAC in conversation with an adult. A series of multiple linear mixed-effect regression analyses showed a positive predictive association between the use of verbs and the use of prepositions and adverbs, as well as a positive predictive relationship between the use of nouns and the use of adjectives. The theoretical and practical implications of these findings are discussed.

Using PAALSS for the manual analysis of language samples of individuals who use aided AAC in Spanish: A pilot study

This pilot study describes the application of the Protocol for the Analysis of Aided Language Samples in Spanish (PAALSS), specifically designed for the manual analysis of language samples from individuals in the early stages of Spanish aided language development. Data were collected from 22 language samples from 16 individuals who use aided AAC and are at the earlier stages of Spanish language development. The primary objective of this study was to explore the feasibility of using PAALSS as an analytical tool to describe various aspects of the language samples, including lexical productivity, lexical diversity, morphology, grammatical complexity, and syntax. Results are presented according to four different groupings, based on the language samples' grammatical complexity scores. The study provides preliminary evidence of the potential of PAALSS as a useful tool for the manual analysis of language samples from users of AAC in Spanish. However, future studies are needed to establish its formal psychometric and measurement properties.

Is there a 'universal' core? Using semantic primes to select vocabulary across languages in AAC

Core vocabulary lists and vocabulary inventories vary according to language. Lists from one language cannot and should not be assumed to be translatable, as words represent language-specific concepts and grammar. In this manuscript, we (a) present the results of a vocabulary overlap analysis between different published core vocabulary lists in English, Korean, Spanish, and Sepedi; (b) discuss the concept of universal semantic primes as a set of universal concepts that are posited to be language-independent; and (c) provide a list of common words shared across all four languages as exemplars of their semantic primes. The resulting common core words and their corresponding semantic primes can assist families and professionals in thinking about the initial steps in the development of AAC systems for their bilingual/multilingual clients.