Plasticity of white matter tracts is thought to be essential for cognitive development and academic skill acquisition in children. However, a dearth of high-quality diffusion tensor imaging (DTI) data measuring longitudinal changes with learning, as well as methodological difficulties in multi-time point tract identification have limited our ability to investigate plasticity of specific white matter tracts. Here, we examine learning-related changes of white matter tracts innervating inferior parietal, prefrontal and temporal regions following an intense 2-month math tutoring program. DTI data were acquired from 18 third grade children, both before and after tutoring. A novel fiber tracking algorithm based on a White Matter Query Language (WMQL) was used to identify three sections of the superior longitudinal fasciculus (SLF) linking frontal and parietal (SLF-FP), parietal and temporal (SLF-PT) and frontal and temporal (SLF-FT) cortices, from which we created child-specific probabilistic maps. The SLF-FP, SLF-FT, and SLF-PT tracts identified with the WMQL method were highly reliable across the two time points and showed close correspondence to tracts previously described in adults. Notably, individual differences in behavioral gains after 2 months of tutoring were specifically correlated with plasticity in the left SLF-FT tract. Our results extend previous findings of individual differences in white matter integrity, and provide important new insights into white matter plasticity related to math learning in childhood. More generally, our quantitative approach will be useful for future studies examining longitudinal changes in white matter integrity associated with cognitive skill development.Electronic supplementary materialThe online version of this article (doi:10.1007/s00429-014-0975-6) contains supplementary material, which is available to authorized users.
A significant treatment gap exists in low and middle income countries such as India for children with autism spectrum disorder. The Autism Intervention Training Program, a comprehensive 6-month program for training professionals in transdisciplinary evidence-based practices to address concerns associated with autism spectrum disorder, was piloted in India to address this gap. This study attempted to capture the perspectives of trainees on the effectiveness of andragogical approaches adopted in the Autism Intervention Training Program and the impact of this training on their work. An exploratory qualitative study was conceptualized, and in-depth interviews were conducted with 11 Autism Intervention Training Program trainees. Trainees highlighted the benefits of a blended training format, peer learning, and a responsive, reflective, experiential, and respectful approach to teaching and supervision. The impact of the program was perceived through an increase in trainees’ knowledge and skills, impact on their organizations, and positive outcomes for children with autism spectrum disorder and their families. There is a need to develop and document comprehensive, contextualized, and evidence-based training programs for autism spectrum disorder professionals in low and middle income countries. Focusing on andragogical frameworks while conceptualizing and delivering these training programs is underscored, as approaches that promote self-efficacy in learners and enable transformative learning can lead to a cascading impact in resource-constrained settings.
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