Summary: | The goal of the present study was to develop and compare two different methods for rating scaffolding between siblings: a thin slice approach and an interval coding approach. Fifty younger (age=3 years) and 50 older (age 3-7 years) siblings interacted for five minutes on a cooperation task and scaffolding during the task was coded for each child. Internal consistency was excellent for the thin slice measure and questionable for the interval measure. Inter-rater reliability was good for both. Thin-slicing was more strongly related to predicted variables (children’s theory of mind, language, age, cooperation, positive and negative behavior) than interval coding, and reduces demands on resources in terms of training and reliability. The development of a reliable and valid measurement for the assessment of child-to-child scaffolding, which involves limited training and is quick to code, will be a useful research and practice tool for developing children’s cooperation skills in applied settings.
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