Contradictory Behavioral Biases Result from the Influence of Past Stimuli on Perception
Figure 4
A schematic explanation of the Contraction Bias and its effect on performance.
Using the same notation of Fig. 1. The horizontal dashed line representsM, the estimated value of the mean stimulus in the block. The vertical arrow presents the contraction of the first stimulus towards the mean value. The arrow is white when this contraction is beneficial to performance (A), since it increases the probability of a correct response. The arrow is red when this contraction impairs performance (B).