Investigating linear and interactive effects of shared mental models on safety and efficiency in a field setting.

Linkages between 2 types of shared mental models (SMMs)--that is, positional-goal interdependencies and cue-strategy associations--and effectiveness in an air traffic control environment were investigated. Two types of SMMs were expected to contribute uniquely, as well as interact, to predict tower safety and efficiency. Using SMM data from 306 air traffic controllers, and corresponding archival efficiency and safety measures for 47 airports, the authors found no significant linear relationships between SMMs and either outcome measure. However, the 2 SMMs interacted with one another to predict both outcomes. Results are discussed in terms of the importance of measuring multiple types of SMMs, the examination of complex relationships, and the importance of indexing decisions.

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