Skip to main content
. Author manuscript; available in PMC: 2016 Sep 28.
Published in final edited form as: Perception. 2015 Sep 21;45(1-2):5–31. doi: 10.1177/0301006615602599

Figure 9. Effect of multisensory attention in subitizing and estimation range.

Figure 9

Weber fractions in number estimation (standard deviation divided by physical numerosity) in the single-task (dotted line, small stars) and as a secondary task in divided attention condition. The primary tasks were haptic time bisection (circles), auditory time bisection (diamonds), auditory pitch discrimination (downward triangles), and visual conjunction (upward triangles). Attentional load strongly impairs precision in the subitizing range (4 and below), irrespective of the modality or type of distractor task. Adapted with permission from Anobile et al. (2012).