1. What are the contributions in "Promoting broad and stable improvements in low-income children’s numerical knowledge through playing number board games" ?
This paper found that playing linear number board games with children from low-income backgrounds may increase their numerical knowledge at the outset of school.
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2. How much variance was accounted for in the estimates of the children?
Before playing the number board game, the best fitting linear function accounted for an average of 15% of the variance in individual children’s estimates of the numbers’ magnitudes.
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3. What is the main effect of age on the slopes of the number line estimates?
The main effect of age indicated that across conditions and sessions, the estimates of the older preschool children had higher slopes than the estimates of their younger peers (mean slope 5 .45 vs. .15).
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4. What are the main methods used to represent numerical magnitudes?
Studies using a variety of methods, including multidimensional scaling, chronometric analysis, and error analysis, indicate that people represent numerical magnitudes in multiple ways (Banks & Coleman, 1981; Holyoak & Mah, 1982; Shepard, Kilpatrick, & Cunningham, 1973; Siegler & Opfer, 2003).
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