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. Author manuscript; available in PMC: 2010 Apr 15.
Published in final edited form as: J Exp Psychol Anim Behav Process. 2008 Apr;34(2):247–255. doi: 10.1037/0097-7403.34.2.247

Table 2.

The design of Experiment 2

Group Phase 1 Phase 2 Phase 3 Test Acquisition Test
Forward 16 L1→N/
16 L2→T		 16 L1→L2 T→S 4 N 20 N→S
Unpaired 16 L1→N/
16 L2→T		 16L1/16L2 T→S 4 N 20 N→S
Backward 16 L1→N/
16 L2→T		 16 L2→L1 T→S 4 N 20 N→S

Note. L1 and L2 = flashing houselight and steady panel light, counterbalanced; T = tone; N = white noise; S = sucrose.