Figure 1
From: Specificity and retention of visual perceptual learning in young children with low vision
Example of the training material used in the crowded perceptual learning training with the large (A), intermediate (B) and small (C) optotypes sizes. (D) Visual representation of the step dummies in the design matrix of the ANCOVAs. Note that the time course of the predictors for the short- and long-term training effects in the early and late treatment group reflect the phased-treatment longitudinal design of our study. The two predictors for natural maturation necessarily follow the same time course in both groups.
