Safety signals reinforce instrumental avoidance in humans

Table 1.

Summary table of means and standard error of the number of safety signal presentations experienced during the training phase (blocks of three trials)

Block 1 Block 2 Block 3 Block 4 Block 5
Experiment 1 1.51 (0.13) 1.40 (0.14) 1.96 (0.14) 1.99 (0.13) 1.9 (0.15)
Experiment 2 1.6 (0.11) 1.45 (0.13) 1.91 (0.15) 2.04 (0.15) 2.05 (0.16)
Experiment 3 1.46 (0.11) 1.36 (0.14) 1.92 (0.14) 1.99 (0.14) 2.09 (0.13)
Experiment 4 1.68 (0.18) 2.46 (0.13) 2.61 (0.09)
Experiment 5 1.24 (0.14) 1.39 (0.15) 1.46 (0.17) 1.63 (0.17) 1.63 (1.7)
  • Note that Experiment 4 contained nine training trials; therefore, there are only three training blocks instead of five.

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