This is a replication of “On the relative independence of thinking biases and cognitive ability” Stanovich and West (2008). This replication is part of the Reproducility Project: Psychology. Data collection is to be done at UC Riverside by December 31, 2014. **Original citation.** KE Stanovich, RF West (2008). On the relative independence of thinking biases and cognitive ability. Journal of Personality and Social Psychology, 94(4):672-95. doi: 10.1037/0022-3514.94.4.672. **Target of replication.** Stanovich and West found that participants who answered correctly were more often of higher cognitive ability and those participants who answered incorrectly were more often of lower cognitive ability, t(373) = 4.40, p <.001. **A priori replication criteria.** A successful replication would find significant difference (p < .05) between SAT scores of those participants who answered the questions correctly and SAT scores of those who answered the questions incorrectly. Materials can be found in the materials component of this project.