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. Author manuscript; available in PMC: 2013 Aug 20.
Published in final edited form as: Psychopharmacology (Berl). 2010 Sep 4;213(1):11–18. doi: 10.1007/s00213-010-2006-5

Table 1.

Summary of Experimental Conditions

Fixed-ratio (FR) value, daily response budget, and sessions required to meet stability criteria in each baseline condition (in order of exposure) for individual subjects

Rat Baseline Condition FR Value Response Budget Sessions to Stability
B4 Low-gambling 3 363 12
High-gambling 40 4840 10
Bl2 Low-gambling 5 605 14
High-gambling 40 4840 11
Bl3 Low-gambling 5 605 14
High-gambling 40 4840 12
R3 Low-gambling 5 605 13
High-gambling 40 4840 15
Bl4 High-gambling 40 4840 20
Low-gambling 5 605 16
R1 High-gambling 40 4840 15
Low-gambling 3 363 39
R2 High-gambling 40 4840 29
Low-gambling 2 242 36