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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: Behav Processes. 2016 Oct 26;141(Pt 1):100–127. doi: 10.1016/j.beproc.2016.10.006

Fig. 7.

Fig. 7

The top panel shows value functions generated by the sTWR (Eq. (9)) using a currency term (i.e., c) determined by reinforcement rates according to Eq. (10) with λ = 0.006. Phase 1 target = VI15, Phase 2 alternative = VI15. The middle panel shows absolute response rates based on this value functions generated by Eq. (11). The bottom panel provides a zoomed view of the last day of Phase 2 and five Phase 3 resurgence sessions.