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. Author manuscript; available in PMC: 2010 Oct 1.
Published in final edited form as: J Exp Psychol Anim Behav Process. 2009 Oct;35(4):447–472. doi: 10.1037/a0015626

Table 1.

Conditions of Experiment 1

Order ITIa Pb Sessions
1 40 s .1 20–21
2 20 s, 80 s .1 21–23
3 80 s, 20 s .1 20–22
4 40 s .1 21–23
5 40 s .05 24–29

Note: Half the subjects experienced the extreme ITIs in the order 20 s 80 s, half in the other order.

a

ITI is Inter-trial Interval

b

p is the probability of the trial ending with food.