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Defining and Assessing Safety Culture in High Reliability Systems

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Kivimaeki, M., Kuk, G., Elova<strong>in</strong>io, M., Thomson, L., Kalliomaeki-Levanto, T., &<br />

Heikkilae, A. (1997). The team climate <strong>in</strong>ventory (TCI)--four or five factors Test<strong>in</strong>g the<br />

structure of TCI <strong>in</strong> samples of low <strong>and</strong> high complexity jobs. Journal of Occupational &<br />

Organizational Psychology, 70(4), 375-389.<br />

Two versions of the Team Climate Inventory (TCI), consist<strong>in</strong>g of either four or five factors, have<br />

been established <strong>in</strong> <strong>in</strong>novation research. The four-factor version consists of<br />

(1) vision,<br />

(2) participative safety,<br />

(3) task orientation, <strong>and</strong><br />

(4) support for <strong>in</strong>novation,<br />

whereas the five-factor version consists of<br />

(1) vision,<br />

(2) participative safety,<br />

(3) task orientation,<br />

(4) support for <strong>in</strong>novation, <strong>and</strong><br />

(5) <strong>in</strong>teraction frequency.<br />

The psychometric properties of these two alternative versions of TCI were compared <strong>in</strong> this<br />

study. Exploratory factor analysis of the entire sample reproduced both versions with good<br />

<strong>in</strong>ternal consistencies. When a dist<strong>in</strong>ction was made between samples with low <strong>and</strong> high job<br />

complexity accord<strong>in</strong>g to DOT, significant differences between the four- <strong>and</strong> five-factor versions<br />

emerged. Exploratory factor analysis of the sample with low job complexity suggested that both<br />

versions obta<strong>in</strong>ed clear <strong>and</strong> <strong>in</strong>terpretable structures. However, only the five-factor version<br />

obta<strong>in</strong>ed a clear factor structure <strong>in</strong> the sample of high job complexity. Further LISREL<br />

confirmatory factor analyses of both samples suggested that the five-factor structure provided<br />

significantly better fit to the data than the four-factor version. In conclusion, the five-factor<br />

version of the TCI is preferred to the four-factor version because it is more structurally <strong>in</strong>tact <strong>and</strong><br />

less likely to be affected by job complexity.<br />

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