Table 2.

Design of Experiment 1B

Group	Phase 1
PP transfer	16 A+, 16 B+, 32 AB−, 16 C−, 16 D−, 32 CD+
NP transfer	16 A+, 16 B+, 32 AB−, 16 C−, 16 D−, 32 CD+
Group	Phase 2
PP transfer	8 A+, 8 B+, 3 AB−, 2 C−, 2 D−, 3 CD+, 6 E−, 6 F−
NP transfer	2 A+, 2 B+, 3 AB−, 8 C−, 8 D−, 3 CD+, 6 E+, 6 F+
Group	Phase 3
PP transfer	2 A, 2 B, 2 AB, 1 C, 1 D, 2 CD, 1 E, 1 F / 2 EF / 4 E, 4 F, 4 EF
NP transfer	1 A, 1 B, 2 AB, 2 C, 2 D, 2 CD, 1 E, 1 F / 2 EF / 4 E, 4 F, 4 EF

A–F represent four different auditory and two different visual stimuli; the + represents availability of reinforcement on a VR schedule; the − represents the absence of reinforcement. Commas separate interspersed trials, and slashes separate different blocks of a phase that are not intermixed