. Author manuscript; available in PMC: 2009 Sep 14.

Published in final edited form as: Psychol Rev. 2009 Jul;116(3):519–539. doi: 10.1037/a0016171

Table 2.

Reinforcement probabilities in the simulation of the Machado-Guilhardi study. The animal can emit two responses b₁ and b₂. Response b_i is reinforced at time T_i1 and T_i2. The probability of reinforcement of response b_i at time T_ij is p_ij.

Condition	p₁₁	p₁₂	p₂₁	p₂₂
Control	0.25	0.25	0.25	0.25
Condition 1	0.25	0.75	0.25	0.75
Condition 2	0.75	0.25	0.25	0.75