Development and validation of a task load index for process control room operators (PCRO-TLX)

Kazemi, Reza, Cousins, Rosanna, Smith, Andrew ORCID: https://orcid.org/0000-0001-8805-8028, Salesi, Mamood, Alibeygian, Fateme, Zendehbodi, Hamid and Mokarami, Hamidreza 2023. Development and validation of a task load index for process control room operators (PCRO-TLX). Ergonomics 66 (12) , pp. 2121-2132. 10.1080/00140139.2023.2186322

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Abstract

Process control room operators (PCRO) perform a range of complex cognitive safety-critical tasks. The aim of this exploratory sequential mixed methods study was to develop an occupation specific tool to measure the task load of PCRO using NASA Task Load Index (TLX) methodology. Participants were 30 human factors experts and 146 PCRO at two refinery complexes in Iran. Dimensions were developed via a cognitive task analysis, a research review, and three expert panel. Six dimensions were identified: perceptual demand, performance, mental demand, time pressure, effort and stress. Data from 120 PCRO confirmed that the developed PCRO-TLX has acceptable psychometric properties, and a comparison with the NASA-TLX confirmed that perceptual, not physical, demand was relevant for measuring workload in PCRO. There was a positive convergence of scores of the Subjective Workload Assessment Technique and the PCRO-TLX. This reliable tool (α = 0.83) is recommended for risk assessing the task load of PCRO.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Psychology
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Publisher:	Taylor and Francis Group
ISSN:	0014-0139
Date of First Compliant Deposit:	3 March 2023
Date of Acceptance:	21 February 2023
Last Modified:	11 Nov 2024 04:30
URI:	https://orca.cardiff.ac.uk/id/eprint/157484

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