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Self-Feeding Method

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It’s been proved that infants can use tools to achieve certain goals, and they can use tools with handles more efficiently through radial grip from source article. However, the effect of different orientations of tools on achieving goals would need to be addressed. Hence, McCarty et. al constructed an advanced study in The Beginnings of Tool Use by Infants and Toddlers not only to examine how younger children plan to use different tools to solve problems during development, but also to evaluate the relationship between planning in self-feeding task and planning in other tool-use task. They hypothesized that children who were capable of self-feeding efficiently could use spoon to do different tasks. They also hypothesized that …show more content…

Task five hammer-to-object tested if children could hit the peg with the 25-cm handle wooden mallet. Task six magnet-to-object examined if children could use the 13-cm handle U-shaped magnet with handle to retrieve different metal objects. Many variables were scored in different tasks including preferred hand used, outcome of the reach, whether using tool appropriately, etc. In the result, only one-handed grasp was used to analyze. Three oldest age groups showed mastery of each tools for more than 80% of the trials, while youngest age group only showed mastery of spoon-to-self task for most of the trails and could not use other tools appropriately. Tool-use tasks were categorized into purpose group (spoon and hairbrushes) and direction of action (self-directed or external directed). Radial grip percentage was measured to determine the categorization. Evidence showed that there was higher radial grip percentage in self-directed task than in external directed task; moreover, there was no difference in radial grip percentage between different tools. Hence, the categorizing of direction of action would be considered as an important indicator for the rest of the study. The outcome of tool-use was divided into four indicators, including uses tool efficiently, adjusts before using tool, uses wrong end of tool and does not uses tool appropriately. Each age group was examined under these indicators. As a result,

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