Acting under uncertainty

TY - BOOK

T1 - Acting under uncertainty

T2 - The core-task analysis in ecological study of work

AU - Norros, Leena

PY - 2004

Y1 - 2004

N2 - This book describes the emergence of a new method, the Core-Task Analysis (CTA), to analyse complex work in risky environments. The notion "core-task" denotes the objectives and the outcome-critical content of work, which should be taken into account by the actors in everyday task performance. The orientation to the core task characterises work practices and culture. CTA adopts a systemic notion of human activity. Situated actions are conceived from an ecological, human-environment interaction perspective. The CTA methodology integrates several theoretical approaches. It exploits ideas of the cultural-historical theory of activity and the functionally oriented cognitive task analysis tradition, and it also borrows the pragmatist concept of habit for the analysis of practice. These approaches share a systemic notion of human activity and conceive action from an ecological, human-environment interaction perspective. Explaining actions from the point of view of their meanings characterises these approaches and the CTA-methodology. The CTA can be used in analysis, evaluation and development of work practices and culture, and it provides a framework for interdisciplinary studies of high-technology work. The method was developed in studies of work in four technologically highly mediated work domains. These are flexible manufacturing, nuclear power plant operations, anaesthesia and navigation of large ships. Furthermore, the book reports empirical results concerning the nature of decision making and action under dynamic, complex and uncertain environments, and comprehends habits that might explain the observed differences in actual situational courses of action. The interpretativeness or reactiveness of habits of action is the central dimension that characterises the situated appropriateness of actions, while the core-task orientation defines contextual coherence of actions. The book also provides evidence of the deficiency of the notion of a linear development of expertise as a function of experience. It is argued that, rather, depending on peoples' orientation to work and on their habits of action, at least two different development perspectives emerge, which were labelled the trajectory of reflective expertise and that of confirmative expertise. In the final chapter the method is discussed in the context of the pragmatist conceptions of adaptive behaviour and learning. The book winds up by introducing preliminary thoughts of the use of the Core-task Analysis as a tool in managing high-reliability organisations.

AB - This book describes the emergence of a new method, the Core-Task Analysis (CTA), to analyse complex work in risky environments. The notion "core-task" denotes the objectives and the outcome-critical content of work, which should be taken into account by the actors in everyday task performance. The orientation to the core task characterises work practices and culture. CTA adopts a systemic notion of human activity. Situated actions are conceived from an ecological, human-environment interaction perspective. The CTA methodology integrates several theoretical approaches. It exploits ideas of the cultural-historical theory of activity and the functionally oriented cognitive task analysis tradition, and it also borrows the pragmatist concept of habit for the analysis of practice. These approaches share a systemic notion of human activity and conceive action from an ecological, human-environment interaction perspective. Explaining actions from the point of view of their meanings characterises these approaches and the CTA-methodology. The CTA can be used in analysis, evaluation and development of work practices and culture, and it provides a framework for interdisciplinary studies of high-technology work. The method was developed in studies of work in four technologically highly mediated work domains. These are flexible manufacturing, nuclear power plant operations, anaesthesia and navigation of large ships. Furthermore, the book reports empirical results concerning the nature of decision making and action under dynamic, complex and uncertain environments, and comprehends habits that might explain the observed differences in actual situational courses of action. The interpretativeness or reactiveness of habits of action is the central dimension that characterises the situated appropriateness of actions, while the core-task orientation defines contextual coherence of actions. The book also provides evidence of the deficiency of the notion of a linear development of expertise as a function of experience. It is argued that, rather, depending on peoples' orientation to work and on their habits of action, at least two different development perspectives emerge, which were labelled the trajectory of reflective expertise and that of confirmative expertise. In the final chapter the method is discussed in the context of the pragmatist conceptions of adaptive behaviour and learning. The book winds up by introducing preliminary thoughts of the use of the Core-task Analysis as a tool in managing high-reliability organisations.

KW - risky environments

KW - complex work

KW - activity theory

KW - habit of action

KW - naturalistic decision-making

KW - process control

KW - high-reliability organisation

KW - anaesthesia

KW - flexible operations

KW - nuclear safety

KW - maritime safety

M3 - Report

SN - 951-38-6410-3

T3 - VTT Publications

BT - Acting under uncertainty

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -