The goal of this study is to replicate and expand upon the Brunstein and Maier (2005) experiment, which examined the effects of performance feedback and implicit achievement motive strength on task performance in an attention task. In the just mentioned study, more achievement-oriented individuals exhibited a decrease in mean RTs in response to bogus negative intraindividual performance feedback. The authors interpret this decrease in mean RTs as increased effort. This feedback by achievement motive interaction effect is one of the central experimental findings in the achievement motive literature. However, the effect has not yet been replicated. Like in the study by Brunstein and Maier, participants of our study completed a d2-R-like attention task while being given positive or negative bogus intraindividual performance feedback. Our study aims to firstly replicate the feedback by achievement motive interaction effect as described by Brunstein and Maier. Secondly, it uses the diffusion model (Ratcliff, 1978) to obtain a deeper understanding of the cognitive processes involved. In addition to the outcomes of our replication study, we will also provide the findings of a study in which we demonstrate the diffusion model’s suitability for the kind of task used by Brunstein and Maier. In summary, we argue that analyses of diffusion model parameters can contribute to a deeper comprehension of the consequences of achievement motive dissatisfaction.