"Groupitizing": A Visuo-Spatial and Arithmetic Phenomenon.

ABSTRACT: When objects are grouped in space, humans can estimate numerosity more precisely than when they are randomly scattered. This phenomenon, called groupitizing, is thought to arise from the interplay of two components: the subitizing system which identifies both the number of subgroups and of items within each group, and the possibility to perform basic arithmetic operations on the subitized groups. Here we directly investigate the relative role of these two components in groupitizing via an interference (dual task) paradigm. Participants were required to estimate numerosities of grouped and ungrouped arrays while their attentional resources were fully available (single task) or while performing concurrent tasks loading auditory or visuo-spatial attention (both known to interfere with the sub

SUBMITTER: Maldonado Moscoso PA 

PROVIDER: S-EPMC11774540 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature