**Original citation.** Mirman, D., & Magnuson, J. S. (2008). Attractor dynamics and semantic neighborhood density: Processing is slowed by near neighbors and speeded by distant neighbors. *Journal of Experimental Psychology*: *Learning, Memory, and Cognition*, *34*, 65-79.
**Target of replication.** The target finding for replication is the nearness effect from Mirman and Magnuson’s (2008) Experiment 2. Specifically, words with many near neighbors (e.g., chicken) were associated with an increased level of processing (i.e., categorized more slowly) compared to words with few near neighbors (e.g., hyena).
**Replication criteria.** Mirman and Magnuson (2008) observed a relatively large effect for their primary finding, *F* (1, 21) = 17.30, *p* < .001, partial η^2 = .45. At this effect size, we required 9, 15, or 22 participants to obtain 80, 90, or 95% power for our replication, respectively. We collected data from 30 participants (*a priori *power > 99%).
**Materials, data, and report.** Materials, raw data, and the final report can be found in the files section of this project.
**Conclusions.** The present findings indicate a successful replication attempt (i.e., in both studies, a statistically significant effect was observed in the predicted direction). In addition, replication findings indicate a somewhat smaller observed effect size (partial η^2 = .22) than the original study (partial η^2 = .45). However, given the small sample sizes in both studies, this comparison failed to reach statistical significance.
[Download the full report][1]
Figure 1. Original findings versus replication findings.
![Figure][2]
*Note.* Error bars represent one standard error for within-subjects repeated measures designs (Morey, 2005).
[1]: http://openscienceframework.org/project/RvKc5/files/Mirman_and_Magnuson_2008.JEP-LMC.final.report.pdf
[2]: http://openscienceframework.org/project/RvKc5/files/download/compare_findings.JPG
