Fig. 2.
Behavioral results. (A) Status quo bias was calculated as the percentage of default acceptance greater than 50% on both high- and low-difficulty trials. A bias toward accepting the default was seen on high- but not low-difficulty trials, resulting in suboptimal choice behavior. This pattern of results was replicated in an independent sample outside of the scanner (Fig. S1). Error bars reflect ±SEM. (B) Histogram of RT counts across subjects for high- and low-difficulty rejection responses, showing slower (more negatively skewed) RTs on high-difficulty trials.