Table 1.

Expected outcome vs. actual outcome

	Exploration	Proactive switch	Perceptual/attentional bias
Test (condition)	ΔRandom–gradual	Repeat	Random
Expected	RBD < LBD&HCO	RBD > LBD&HCO	RBD ≠ LBD & HCO
Actual	RBD < LBD&HCO ✓	RBD = LBD&HCO ✗ (?)	RBD = LBD & HCO ✗

Summary of expected vs. actual results for all three hypotheses (i.e., exploration, proactive switch, perceptual/attentional bias) potentially explaining the updating impairment seen in RBD patients. The second row refers to the condition that was used to evaluate the hypothesis. Please note that results are only displayed for HCO matched on cognitive status