From: What are the units of storage in visual working memory? Journal of Vision. 2010;10(12):27. doi:10.1167/10.12.27 Figure Legend: Histogram of all response errors (in degrees) for participants in (A–B) Experiment 1 and (C–D) Experiment 2 separated by condition: three (blue) or six (red) features and color (left) or orientation (right) probe. Note that the histogram has 20 equal bins, each 18° wide. The solid black line in each panel shows the best fitting mixture distribution for the data combined across participants. The continuous mixture distribution has been scaled to match the histogram's frequency values (y-axis). Date of download: 10/26/2017 The Association for Research in Vision and Ophthalmology Copyright © 2017. All rights reserved.