SLI or 'slow' to develop English additional language (EAL) learners - how do we know? : an in depth investigation of English additional language learners in the foundation phase with suspected specific language impairment.

摘要

Background: This study formed part of a larger longitudinal research study by Jordaan (2009), who tracked the development of language for academic purposes in grade 1- 3 English Additional Language (EAL) and English First Language (EFL) learners attending English only programmes in Gauteng over a period of three years. These learners attended schools in two different educational contexts where there is a marked heterogeneity in the linguistic backgrounds of both the learners and teachers investigated. Results from Jordaan’s (2009) study revealed that some EAL and EFL learners appeared to be slow in the development of their academic language abilities (as no progress was evident over the period of three years), relative to their peers, and thus these learners may have a language impairment.udPurpose: This study investigated in detail, these “slow to learn” EAL and EFL learners in the foundation phase, in order to determine whether they have a language impairment and to determine how the language impairment manifests in these learners.udParticipants: Sixteen learners (5 EFL learners and 16 EAL learners) who demonstrated no improvement in their academic language abilities from grade one to grade two as determined by their performance on the Diagnostic Evaluation of Language Variation Criterion Referenced (DELV-CR) test were the participants of this study.udMethod: The participants were assessed on the Automated Working Memory Assessment (AWMA) test, a Non Word Repetition test (Dollaghan & Campbell, 1998), a Sentence Repetition test (Redmond, 2005) and the Gray Oral Reading Test (GORT-4). Educators were also asked to rate these learners’ oral language, written language and reading comprehension abilities on a scale of 0- 5. The research design utilized was a non experimental, descriptive quantitative design, involving both correlational and comparative components. The data obtained was then analysed using descriptive and inferential statistics. Pearson correlation coefficients were calculated to establish whether there was a relationship between the cognitive processing and the language proficiency measures as well as the teacher ratings in order to provide information regarding these tests as assessment tools for EAL learners as well as to further enhance the validity of this study. Independent sample t-tests were also conducted to determine whether there were any significant differences between the EFL and EAL learners’ performance in the two different educational contexts, so as to establish whether bilingual learners withudlanguage impairment are more severely impaired than monolingual learners with languageudimpairment.udResults: Based on the analysis of these learners’ performance on the DELV-CR test, resultsudindicated that all sixteen participants presented with SLI and were not just “slow to learn”. TheudEAL-SLI learners in both contexts performed poorly on the reading comprehension test and wereudrated lower than their aged matched peers on the teacher rating scales. Furthermore, whenudcomparing these EAL-SLI learners’ performance on the DELV-CR test to the performance of theudEFL-SLI learners, the EAL-SLI learners as a group appeared to have performed more poorlyudthan the EFL-SLI learners on all three subtests. As significant differences were found betweenudthe EAL and EFL learners’ performance on the DELV-CR test, the results suggested thatudbilingual learners with SLI, who acquire a second language sequentially, are more impaired thanudmonolingual learners with SLI. The EAL-SLI learners also presented with visuo-spatial shortudterm and working memory deficits and even though a large majority of the learners presentedudwith verbal short term and working memory difficulties, not all the learners presented withudcognitive processing difficulties. This finding has implications for the theories of SLI. However,udthe sentence repetition task was found to be a useful tool in differentiating between the “slow toudlearn” EAL learners and EAL-SLI learners and furthermore this test also positively correlatedudwith various sections of the DELV-CR test which adds to the value of this test as an assessmentudtool in EAL learners. Positive correlations were also found between the teacher ratings of theudEAL-SLI learners and the subtests of the DELV-CR test which indicates that teachers have theudability to correctly identify learners with language learning difficulties. Positive correlationsudwere also found between the digit repetition subtest, the non word repetition test and the sentenceudrepetition test which adds to the validity of this study.udConclusion: The results obtained from this study demonstrated that bilingual learners with SLIudwho acquire a second language sequentially are additionally disadvantaged compared to theirudEFL-SLI peers in the acquisition of certain aspects of academic language. Furthermore, althoughudresearch has shown that cognitive processing measures are less biased in the assessment ofudlinguistically diverse learners, results indicated that the DELV-CR test identified moreudaccurately, learners with language impairment whereas the cognitive processing measuresudprovided contradictory and biased results with the verbal working memory subtest overudidentifying learners “at risk” for language impairment. Finally, the use of sentence repetitionudtasks in the differentiation between “slow to learn” and language impaired EAL learners proves to be promising.