Daniel Ansari

TL;DR: A few neuroimaging studies revealed that brain activation during number comparison correlates with children's mathematics achievement level, but the consistency of such relationships for symbolic and non-symbolic processing is unclear.

TL;DR: The Psychological Science Accelerator is a distributed network of laboratories designed to enable and support crowdsourced research projects that will advance understanding of mental processes and behaviors by enabling rigorous research and systematic examination of its generalizability.

TL;DR: Data support the claim that HMA individuals have less precise representations of numerical magnitude than their LMA peers, suggesting that MA is associated with low-level numerical deficits that compromise the development of higher level mathematical skills.

TL;DR: Investigating how brain activation during single-digit addition and subtraction is modulated by problem size and arithmetic operation in children with different levels of arithmetical fluency revealed that particularly the left hippocampus was active during the solution of those problems that are expected to be solved by means of fact retrieval, suggesting a specific role of the hippocampus in the early stages of learning arithmetic facts.

TL;DR: It is shown that accessing a sense of how much a numerical symbol actually represents is a surprisingly difficult and nontrivial process, consistent with the view that numerical symbols operate primarily as an associative system in which relations between symbols come to overshadow those between symbols and their quantity referents.