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Factors such as parents\u2019 low levels of literacy, confidence and self\u2010perception can affect the capacity to act on advice received, critical to empowerment. Methods used to achieve successful health outcomes in socially disadvantaged clinical populations may need enhancing.<\/jats:p><\/jats:sec><jats:sec><jats:title>Aims<\/jats:title><jats:p>To compare the impact of standard parent\u2010based intervention (PBI) to enhanced PBI for young children with speech, language and communication needs (SCLN) and their families living in more socially disadvantaged populations.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods and Procedures<\/jats:title><jats:p>A multicentre clustered blind randomised controlled trial was used to compare the effect of parent\u2010based group interventions to improve early language development with children (mean age 27.5 months) from more socially disadvantaged populations with an expressive vocabulary of 40 or less single words. Intervention sessions were delivered by a speech and language therapist, over a 20\u2010week period. Participants received one of two interventions: (1) Standard Care \u2013 indirect group PBI \u2013 (PBI) (2) Enhanced Care: indirect group enhanced PBI \u2013 (EPBI). Both standardised and non\u2010standardised measures were used as outcomes. Parent engagement in the intervention was captured through analysis of attendance and the Parent Activation Measure \u2013 Speech &amp; Language Therapy (PAM\u2010SLT) (Insignia Health, 2014). The PAM measures a person's knowledge, skills and confidence to manage their own health and well\u2010being (NHS England, 2018). In this study, activation referred to parents\u2019 knowledge, skills and confidence to manage their child's language development.<\/jats:p><\/jats:sec><jats:sec><jats:title>Outcomes and Results<\/jats:title><jats:p>One hundred fifty\u2010five participants were randomised at baseline. Children in both groups made significant improvements in the outcome on MacArthur\u2010Bates Communicative Development Inventories Sentence Length, from pre\u2010intervention to post\u2010intervention and 6 months post\u2010intervention (<jats:italic>p<\/jats:italic> &lt; 0.05). Changes in vocabulary and expressive language skills were more equivocal, showing wide variation in confidence intervals for both groups. Where parents attended at least one intervention session almost all effect sizes were in favour of the EPBI intervention. Parents\u2019 activation levels significantly increased for both groups (EPBI <jats:italic>p<\/jats:italic> &lt; 0.001, PBI <jats:italic>p<\/jats:italic> = 0.003), with a moderate effect size in favour of EPBI (Hedges\u2019 G 0.37, confidence interval \u20130.02 to 0.76), although wide variation was found.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions and Implications<\/jats:title><jats:p>This trial provides some evidence of facilitating the language development of children with SLCN from more socially disadvantaged areas through supporting caregivers. However, we found variation in outcomes; some children made excellent progress, whilst others did not. Further exploration of parent engagement and its relationship to child language outcomes will be valuable to understanding more about mechanisms of change in interventions that involve parents.<\/jats:p><\/jats:sec><jats:sec><jats:title>WHAT THIS PAPER ADDS<\/jats:title><jats:sec><jats:title>What is already known on the subject<\/jats:title><jats:p><jats:list list-type=\"bullet\">\n<jats:list-item><jats:p>Speech, language and communication needs (SLCN) have a knock\u2010on effect on emotional well\u2010being, school readiness, literacy and school attainment, putting children at increased risk of long\u2010term consequences such as poor literacy, mental health problems and unemployment. In disadvantaged areas, the prevalence of language difficulties is higher than elsewhere. Factors such as parents' low levels of literacy, confidence and self\u2010perception can affect the capacity to act on advice received, critical to empowerment.<\/jats:p><\/jats:list-item><\/jats:list><\/jats:p><\/jats:sec><jats:sec><jats:title>What this paper adds to existing knowledge<\/jats:title><jats:p><jats:list list-type=\"bullet\">\n<jats:list-item><jats:p>Children with SLCN from more socially disadvantaged areas can make improvements in their language development through parent intervention, although wide individual variation was found. There was some evidence that children achieve better outcomes with EPBI, which employed an interagency collaborative approach. Parent's engagement (activation levels) increased significantly over time with intervention, with the increase twice as big for EPBI.<\/jats:p><\/jats:list-item><\/jats:list><\/jats:p><\/jats:sec><jats:sec><jats:title>What are the potential or actual clinical implications of this work?<\/jats:title><jats:p><jats:list list-type=\"bullet\">\n<jats:list-item><jats:p>This trial provides some evidence that it is possible to facilitate the language development of children from more socially disadvantaged areas through supporting their caregivers. Further research would be useful to determine whether increases in parent engagement are related to adherence to intervention and change in child outcomes.<\/jats:p><\/jats:list-item><\/jats:list><\/jats:p><\/jats:sec><\/jats:sec>","DOI":"10.1111\/1460-6984.13016","type":"journal-article","created":{"date-parts":[[2024,1,29]],"date-time":"2024-01-29T12:40:36Z","timestamp":1706532036000},"page":"1517-1537","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["A randomised controlled trial of the effectiveness of parent\u2010based models of language intervention for 2\u2010 to 3\u2010year\u2010old children with speech, language and communication needs (SLCN) in areas of social disadvantage"],"prefix":"10.1111","volume":"59","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6252-8690","authenticated-orcid":false,"given":"Deborah","family":"Gibbard","sequence":"first","affiliation":[{"name":"Solent NHS Trust  Southampton UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sue","family":"Roulstone","sequence":"additional","affiliation":[{"name":"Faculty of Health &amp; Life Sciences University of West of England  Bristol UK"},{"name":"Bristol Speech &amp; Language Therapy Research Unit  Bristol UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ngianga II","family":"Kandala (Shadrack)","sequence":"additional","affiliation":[{"name":"University of Portsmouth  Portsmouth UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9011-8544","authenticated-orcid":false,"given":"Lydia","family":"Morgan","sequence":"additional","affiliation":[{"name":"Bristol Speech &amp; Language Therapy Research Unit  Bristol UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sam","family":"Harding","sequence":"additional","affiliation":[{"name":"Bristol Speech &amp; Language Therapy Research Unit  Bristol UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Clare","family":"Smith","sequence":"additional","affiliation":[{"name":"Solent NHS Trust  Southampton UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chris","family":"Markham","sequence":"additional","affiliation":[{"name":"University of Portsmouth  Portsmouth UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,1,29]]},"reference":[{"key":"e_1_2_7_2_1","unstructured":"All Party Parliamentary Group (APPG) on Speech and Language Difficulties. 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