There is considerable variability in publishing performance among psychology journals in Brazil. However, research as to why is very scarce. This study empirically examined the relationship between non-Brazilian contribution and publishing performance, among these journals. A total of 746 articles from the top-18 psychology journals in Brazil were coded for study type, international collaboration, and non-Brazilian contribution. Analyses revealed that publishing performance was associated with the following: (i) international collaboration and (ii) non-Brazilian contribution. Collaboration with, and contribution from, English-speaking authors was more prevalent among the higher performing journals; while contribution from non-Brazilian Ibero-American authors was more prevalent among the lower performing journals. These findings suggest that publishing performance for psychology journals in Brazil may be strongly tied to non-Brazilian contribution. Implications may be relevant to journal publishers and editors, as well as arbiters of scientific policy.