Table 1.

Testing sequence of reinforcement schedules to assess steady-state matching behavior. Each column specifies reinforcement schedules that the respective subject was assigned to during the 15 days of experimentation.

Day	Rat #1	Rat #2	Rat #3
1–3	conc RI 45 s RI 15 s	conc RI 15 s RI 45 s	conc RI 30 s RI 30 s
4–6	conc RI 15 s RI 45 s	conc RI 45 s RI 15 s	conc RI 5 s RI 55 s
7–9	conc RI 55 s RI 5 s	conc RI 5 s RI 55 s	conc RI 55 s RI 5 s
10–12	conc RI 5 s RI 55 s	conc RI 55 s RI 5 s	conc RI 15 s RI 45 s
12–15	conc RI 30 s RI 30 s	conc RI 30 s RI 30 s	conc RI 45 s RI 15 s