Technical Comments

Comment on “Lévy Walks Evolve Through Interaction Between Movement and Environmental Complexity”

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Science  24 Feb 2012:
Vol. 335, Issue 6071, pp. 918
DOI: 10.1126/science.1215747

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de Jager et al. (Reports, 24 June 2011, p. 1551) concluded that mussels Lévy walk. We confronted a larger model set with these data and found that mussels do not Lévy walk: Their movement is best described by a composite Brownian walk. This shows how model selection based on an impoverished set of candidate models can lead to incorrect inferences.

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