Replicating Epley and Gilovich: Need for Cognition, Cognitive Load, and Forewarning do not Moderate Anchoring Effects

This project contains the preregistration, materials, and results for the replications of three studies by Epley and Gilovich (2005, Study 2; 2006, Studies 2a and 2c). The replications were designed to shed light on contradictory findings regarding the difference between self-generated anchors and experimenter-provided anchors on people's numeric estimates

Replicating Epley and Gilovich: Need for Cognition, Cognitive Load, and Forewarning do not Moderate Anchoring Effects

Anchoring, the assimilation of numerical estimates toward previously considered numbers, has generally been separated into anchoring from self-generated anchors (e.g., people first thinking of 9 months when asked for the gestation period of an animal) and experimenter-provided anchors (e.g., experimenters letting participants spin fortune wheels). For some time, the two types of anchoring were believed to be explained by two different theoretical accounts. However, later research showed crossover between the accounts. What now remains are contradictions between past and recent findings, specifically, which moderators affect which type of anchoring. We conducted three replications (Ntotal = 653) of seminal studies on the distinction between self-generated and experimenter-provided anchoring effects where we investigated the moderators need for cognition, cognitive load, and forewarning. We found no evidence that either type of anchoring is moderated by any of the moderators. In line with recent replication efforts, we found that anchoring effects were robust, but the findings on moderators of anchoring effects should be treated with caution

Netzwerk der Open-Science-Initiativen (NOSI)

This project is the central platform for the Network of (German-speaking) Open Science Initiatives (Netzwerk der Open-Science-Initiativen, NOSI). We're providing protocols, links, and resources that might be of interest to others interested in Open Science