Figure 2.

Three sources of error in memory used for mixture modelling. This figure is a schematic presentation of the three possible sources of error that can occur in working memory. (A) A Von Mises (circular Gaussian) distribution with concentration parameter κ, centred on the probed value, capturing variability in memory for target, with the area under the distribution (shaded) being proportional to the probability of responding to the probe. (B) A uniform distribution of error corresponding to random error, with the area under this distribution corresponding to the proportion of random responses. (C) Von Mises distribution with concentration parameter κ, centred on one of the non-probe value, resulting from errors in identifying which orientation belonged with the probed colour (binding failures). The area under the distribution corresponds to the proportion of non-probed responses.