Hand preference and hand skill were assessed in 20 children with autism, 20 normal controls and 12 children with mental retardation. 90% of the normal controls and 92% of the children with mental retardation showed concordance for hand preference and hand skill (i.e. the preferred hand was also the more skillful), whereas only 50% of the children with autism showed concordance of preference and skill, the remaining 50% preferring to use the hand which was less skillful. Children with autism also showed a lesser degree of handedness and a lesser degree of consistency than the other groups, although this was unrelated to the discordance of skill and asymmetry. A developmental model of handedness is proposed in which the development of handedness as preference is ontogenetically prior to the development of handedness as skill asymmetry, such that in normal children the development of skill asymmetry occurs as a secondary consequence of the establishment of preference. The causal sequence is disrupted in autism, so that although preference is established, it does not subsequently result in concordant skill asymmetry.
Microteaching is a way of doing professional development for teachers wanting to incorporate new evidence-based and high-leverage practices into their instructional toolboxes. Given how much work is required in teaching and the limited time professionals have available, microteaching is an accessible process that supports instructional improvement by practicing evidence-based and high leverage strategies. Professionals, working with a small group of peers, engage a four-phase process that includes planning, enactment of a strategy, as well as individual and group reflection. Professionals use the opportunity to explore a teaching strategy that is responsive to student needs in the context of critical friends. Having an opportunity to try it out before introducing it in the classroom can be a valuable way to work out bugs, discover aspects that need development, and build a sense of efficacy. Microteaching is a way to support collegial growth by seeing into each other’s classroom practice.
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