Table 1.

Proportion of trials in which participants pressed each of the four possible responses in the test phase of Experiment 1 (Old Sure, Old Unsure, New Sure, New Unsure) and each of the six possible responses in Experiment 2 (Old Remember Sure, Old Remember Unsure, Old Forget Sure, Old Forget Unsure, New Sure, New Unsure). Experiment 2 is separated by the 84 participants who are included in the primary analyses (denoted Experiment 2 (Included)) and the 76 participants who were excluded from the primary analyses based on post-experimental survey responses (denoted Experiment 2 (Excluded))

	Old sure	Old unsure	New sure	New unsure
Experiment 1	0.316	0.102	0.392	0.190

	Old remember sure	Old remember unsure	Old forget sure	Old forget unsure	New sure	New unsure
Experiment 2 (included)	0.243	0.082	0.120	0.102	0.273	0.181
Experiment 2 (excluded)	0.269	0.082	0.141	0.081	0.289	0.137