Figure 5 | Scientific Reports

Figure 5

From: Qualitative speed-accuracy tradeoff effects that cannot be explained by the diffusion model under the selective influence assumption

Figure 5

DMAT model fits. We fit the diffusion model to the data using the software package DMAT by allowing only the boundary parameter to vary with SAT levels and the drift parameter to vary with contrast. The fits were very similar to the ones with HDDM (Fig. 4). We observed good fits for the d′-RT curves except for the “extremely fast” condition (upper left panel), monotonically increasing functions for the RT difference between error and correct trials (upper right panel), monotonically increasing \(\frac{{SD\left( {RT} \right)}}{{mean\left( {RT} \right)}}\) curves (lower left panel), and inverted-U RT skewness curves (lower right panel). Again, none of the empirically observed U-shaped curves were reproduced even qualitatively. All notation is identical to Fig. 4.

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