Archive for category assessment
We’ve (as a field) have known for about 20 years that single word vocabulary tests whether they are receptive or expressive tests are poor indicators of developmental language disorders (DLD). At the same time, these tests are very often used by SLPs as part of a diagnostic. They are easy to give, quick, and highly reliable. It’s hard to make an error in administration or scoring on these tests. But, reliability is not enough (neither are the other reasons). Even if it only takes 5 minutes and the score is a perfect representation of what the child can do it doesn’t mean that a low score indicates impairment or that a high score indicates typical development. As far as domains of language go– children with DLD do pretty well with vocabulary at the single word level. It’s semantics (connections among words) that they have difficulty with. Read the rest of this entry »
I’m working on a paper that focuses on language dominance, proficiency and exposure. I’ve written about these definitions before. Here, I want to think about how it is we capture this information.
There are a number of really nice surveys and questionnaires that have been developed that help to document this information. These include L1 and L2 age of acquisition; educational history in each language, rating of proficiency in each language. Sometimes this is broken out into speaking, listening, reading and writing. Some questionnaires ask about what language is more proficient, and may ask for what purpose(s) each language is used. This information is designed to get at the question of how language is used and how proficient an individual might be across situations. Read the rest of this entry »
You know I’m gonna say no. But, it’s important to establish what does happen and to do so with data. After several studies we have enough data to look at this question more carefully with a set of children with developmental language disorder (aka: language impairment; specific language impairment; or primary language impairment) who had varying levels of exposure to Spanish and English. Read the rest of this entry »
The answers are yes, no, maybe, it depends. Last time we talked about “yes.” This time let’s talk about:
Yes, no, maybe, it depends. Read the rest of this entry »
I belong to a Facebook group SLPs for Evidence Based Practice. There is frequent discussion of what works and what doesn’t in intervention and in assessment. My work has often focused on assessment and assessment practices. And, I have to say that it is frustrating to find that something does (or doesn’t) work but that clinical practices take so long to change. So, I wonder what is our obligation in the field to be aware of the evidence? And what is our obligation to make changes in our practices? Read the rest of this entry »
A question that often comes up about our research is how to apply it clinically. Much of our work is motivated by clinical questions and ultimately we aim to have some clinical solutions. It’s hard sometimes to move directly from research to application. Sometimes the clinical questions we pose have no or very little research available to move to the next step. So, we have to step back and do the more basic descriptive work to understand the nature of bilingualism and of bilingual impairment before we can then more forward again to answer questions about assessment and treatment. Now that we’ve done more work that has implications for assessment and have the BESA available for clinicians we can start to think about more direct application.
I wrote a year ago that we can get the most accurate indicator of language impairment on the BESA when we combine the best language across domains. So, we might combine Spanish morphosyntax with English semantics for a language composite. But, how do you write up results to incorporate into a report?
In a fairly recent paper, we provide some illustrations of how to use test information to make clinical decisions using the BESA. We go through the parent and teacher interview we use to determine possible concern about speech and language ability in each language and how we determine language use and exposure. Finally, we demonstrate how we combine and compare Spanish and English performance across each domain to determine language impairment. I hope these help in writing up your clinical reports.
I’m at the airport in Washington DC after participating in a workshop at tha NIH on dual language learners. We talked about the state of the art. What’s cool is that there has been so much progress. We know that bilingualism isn’t bad for you and that in fact it could be good for you. We have better ideas about how to diagnose bilinguals with language impairment. At least in some languages. We know about what works for Spanish and English. We have emerging data for Mandarin-English and Vietnamese-English as well as other language pairs. We have an emerging picture about bilingual development in two languages.
But, there’s still a lot we don’t know. We don’t fully understand how changes in the linguistic environment affect child performance on language measures. We still don’t have a God handle in intervention for bilinguals with langquge impairment. Do we treat in one language or both? Do we use translanguaging approaches?
I don’t think we fully understand how bilingualism affects the brain. Nor do we know how the environment shapes the brains of children with language impairment.
We heard about reading disorder and mechanisms associated with dyslexia. Children can and do learn to read in two languages but we don’t really understand how those languages interact and how languages that have different writing systems interact in the bilingual brain.
Even though we’ve made progress in identification of impairment we don’t do such a great job across languages and at all ages.
So we know a lot we have a ways to go
This popped up on the habla.lab facebook page today and I shared it there, but I thought I’d share it here too.
GRRRR is of course my first reaction. We’ve talked about this so many times in the past but these myths persist. The one that is currently in vogue is that bilinguals are delayed in both languages (which is basically what this is) but that is not, in fact the case. It depends on the domain and the language being tested (and how it is being tested).
What we find for bilinguals is that often they show what we term “mixed dominance” that is for one domain (e.g., semantics) an individual child will show dominance in one language (e.g., English)– and that is well within normal limits, but in another domain (grammar) they may show dominance in the other language (e.g., Spanish). If you look at only one language they may look delayed, but if you look at the stronger language in each domain they do not (we developed the Bilingual English Spanish Assessment to derive a language composite based on the strongest performance by domain).
I think that this happens also when you test groups of bilinguals, average scores are lower than average in each language (AS A GROUP), but if you look at the HIGHER language, individual children are performing well. Actually, they may be performing better because they know MORE (they know the vocabulary and grammar and discourse style of at least TWO languages)== that’s more not less.
A few years ago I was talking with an assistant principal of a bilingual school. He cited research about the cognitive benefits of bilingualism as a primary rationale for his school’s bilingual approach. Yet, he also lamented the fact that many of the Latinx students at his school were “lost in translation” in that they didn’t have full competency in Spanish or English. I was left wondering how it was possible for bilingualism to be positioned as leading to cognitive benefits while actual bilingual children were positioned as linguistically deficient.
This deficit perspective of the bilingualism of Latinx students is certainly not new, though its framing has changed over time. Prior to the 1960s researchers argued that bilingualism led to cognitive deficiencies. These alleged cognitive deficiencies were used to explain the low IQ scores of Latinx students. The basic argument was that bilingualism confused Latinx students and inhibited their cognitive development.
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I haven’t posted for a while, things have been pretty busy finishing up a project and starting another, applying for grant money so that we can pay for proposed projects and so on. But, today I got a message from a bilingual SLP who works in early intervention. She had some concerns about some decisions and procedures being made by the local school district. She was working to do an assessment of a 3-year old child who had approximately 10 words in his or her vocabulary. Now most of us would see this as strong evidence of a language delay or impairment. But, what if the child’s first language is not English?