Fig. 3: Value-free random exploration linked to impulsivity.
From: Value-free random exploration is linked to impulsivity
General impulsivity (as measured by the BIS49) was significantly associated to value-free random exploration. This was observed both in a the model parameter, the \(\epsilon\)-greedy parameter (Pearson’s correlation: r(578) = 0.171, p = 3.398e-05) and in b the behaviour, the frequency of picking the low-value bandit (r(578) = 0.174, p = 2.442e-05). The motor subscore of the BIS was most closely associated with value-free random exploration, both in c the model parameter (Bonferroni corrected (n = 3): r(578) = 0.198, pcor = 5.318e-06, punc = 1.772e-06) and d the behaviour (r(578) = 0.205, pcor = 2.249e-06, punc = 7.495e-07). Similarly, ADHD-related impulsivity (as measured by the ASRS72) was significantly associated to value-free random exploration, both in e the model parameter (r(578) = 0.157, p = 1.466e-04) and in f the behaviour (r(578) = 0.151, p = 3.069e-04). The hyperactivity-impulsivity subscore of the ASRS was most tightly associated to novelty exploration, both in g the model parameter (Bonferroni corrected (n = 2): r(578) = 0.205, pcor = 1.352e-06, punc = 6.764e-07) and h the behaviour (r(578) = 0.193, pcor = 6.319e-06, punc = 3.159e-06). The filled lines represent the 95%CI. Sample size for statistics: N = 580 human participants. Source data are provided as a Source Data file.
