Drawing on the stylized facts and evidences, in a computable general equilibrium (CGE) model, this paper examines the impact on TFP of North South, North North trade-related triangular R&D spillovers. By constructing different technology appropriation parameters based on embodied and disembodied R&D, absorption and learning effects, it shows: (i) North South R&D flows have a positive impact on TFP; (ii) human capital-induced skill facilitates North South R&D flows; (iii) socio-institutional and technology adoption parameters do play roles for knowledge flows, its capture, and transmission. Such technology diffusion and assimilation counters the adverse impact of North South geographical distance on productivity dynamics. (C) 2015 Society for Policy Modeling. Published by Elsevier Inc. All rights reserved.