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Abstract

The third-quarter phenomenon is the dominant theoretical model to explain the psychological impactsof deployment in Antarctica on personnel. It posits that detrimental symptoms to functioning, such as negativemood, increase gradually throughout deployment and peak at the third-quarter point, regardless of overall deploymentlength. However, there is equivocal support for the model. The current meta-analysis included data from 21 studies(involving 1,826 participants) measuring negative mood during deployment to elucidate this discrepancy. Acrossstudies analyses were conducted on three data types: stratified by month using repeated-measured all time points metaanalytictechniques and pre/post-deployment data for summer/winter deployment seasons. Our results did not supportthe proposed parameters of the third-quarter phenomenon, as negative mood did not peak at the third-quarter point(August/September) of deployment. Overall effect sizes indicated that negative mood was greater at baseline than the endof deployment for summer and winter deployment seasons. These findings have theoretical and practical implicationsand should be used to guide future research, assisting in the development and modification of pre-existing preventionand intervention programmes to improve well-being and functioning of personnel during Antarctic deployment.

Item Type:	Article
Authors/Creators:	Hawkes, C and Norris, K
Keywords:	Antarctica, extreme environments, health, human behaviour, psychology
Journal or Publication Title:	Polar Record
Publisher:	Cambridge University Press
ISSN:	0032-2474
DOI / ID Number:	https://doi.org/10.1017/S003224741700050X
Copyright Information:	Copyright 2017 Cambridge University Press
Related URLs:	Google Scholar: Norris, K UTAS Profile: Norris, K
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