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We provide conceptual introductions to missingness mechanisms--missing completely at random, missing at random, and missing not at random--and state-of-the-art methods of handling missing data--full-information maximum likelihood and multiple imputation--followed by a discussion of planned missing designs: Multiform questionnaire protocols, 2-method(More)
Parent and child mealtime behaviors associated with consumption of unfamiliar foods by children with ASD were examined. Families of 38 children aged 2 through 8 years old and diagnosed with ASD videotaped a typical home mealtime during which parents presented the child with an unfamiliar food and mealtime behaviors were subsequently coded through an(More)
The present study focuses on the development of citizenship competences of Dutch adolescents, including the political and social aspects as part of adolescents' daily lives. We followed 5070 adolescents aged 12-16 years across a three-year period in lower secondary education. The variance on school and student level was estimated and a three-level(More)
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