Table 1. Sequence of experimental phases for each subject, including the sequence of sessions (“Ses”) and the total number of trials (“TR”) in each phase. Trials were presented in blocks of 36, 40, or 144. (The sequence of experimental conditions within each phase is not shown.).

Condition	Subjects
	ALE		CA		EMM		PLRA		SU
	Ses	TR	Ses	TR	Ses	TR	Ses	TR	Ses	TR
Phase I – AB–AC Training
AB	1–3	432	1–2	576	1–4	432	1–5	1728	1–3	576
AC		576		432		360		576		432
AB–AC		576		328		432		656		432
Phase II – Limited-Hold Contingencies and Gradual Reduction of Limited-Hold Durations
AB–AC	3–22	13872	3–19	12160	4–23	9144	6–27	14328	4–19 21–22	11832
Phase III – AB and AC without Differential Consequences
AB–AC	23	40	20	80	24–25	144	28–32	760	20&23	120
AB–AC/Ext		432		288		288		1440		1008
AB–AC/2x		432		288		288		1440		1008
Phase IVa – Combined Equivalence Session
AB–AC	24	288	21	512	26–27	96	33	144	24	80
AB–AC/Ext		144		–		–		144		–
BC–CB		576		576		576		576		576
AB–AC/2x		576		576		576		720		576
Phase IVb – Symmetry Session
AB–AC	25	184	22	184	28–29	96	34	144	25	40
AB–AC/Ext		–		–		–		–		–
BA–CA		576		576		576		576		576
AB–AC/2x		576		576		576		576		576