The three-year $1,091,303 grant, which is funded by NSF’s EHR Core Research program focused on STEM learning, includes support for Wesleyan student participation in the proposed research project, which will involve experimental studies of children’s and adults’ understanding of, and judgments about, number and quantity.
The two labs collaborate frequently, and have been working jointly on another project for the past three years supported by an earlier NSF grant. The new project is distinct, but grew out of a discovery made in the Barth lab during the earlier project related to a number line estimation task. In this task, participants are shown a line with numbers at each endpoint (e.g., 0 and 1,000) and asked to estimate where on the line a particular three-digit number would fall. The researchers found that participants had a tendency to place two numbers much farther apart on the line than they actually were when those numbers had a different first digit, even if they were quite close to each other in actuality (for example, 799 and 802). This was true even of adult participants, who have a good understanding of numbers.