Title page for ETD etd-01202006-182745


Type of Document Dissertation
Author Darisipudi, Ashok
Author's Email Address adaris1@lsu.edu
URN etd-01202006-182745
Title Towards a Generalized Team Task Complexity Model
Degree Doctor of Philosophy (Ph.D.)
Department Engineering Science (Interdepartmental Program)
Advisory Committee
Advisor Name Title
Craig M. Harvey Committee Co-Chair
Fereydoun Aghazadeh Committee Co-Chair
Andrea Houston Committee Member
Barry Moser Committee Member
Ramachandra Devireddy Committee Member
Yiping Lou Dean's Representative
Keywords
  • team collaboration
  • teams in complex settings
  • task complexity
  • team models
  • team performance
Date of Defense 2005-12-09
Availability unrestricted
Abstract
The objective of this research was to develop and validate a generalized team task-complexity model and framework by drawing on the literature from various team and task factors grouped into three task-dimensions, which compose task-complexity space and how these affect the task-performance. A number of task typologies have been presented in the teams' literature to better define and understand the critical role of the tasks and the associated team processes. In addition, most of the research work has defined team measures as highly abstract concepts not capable of providing the quantitative comparison of team performances from various domains.

This research proposed a model of task-complexity based on different task-characteristics including task-scope, task-coordination and task-uncertainty that provide the capability to quantify different attributes that impact team performance. A multiple linear regression analysis was used to validate the contribution of each task-complexity dimension towards complexity and performance. Analysis of variance was also used to account variance in measurement scales and not to force linear relationship.

The results indicate a significant three-way interaction of task-scope, task-coordination and task-uncertainty. Since three-way interaction was significant, all the three task-complexity dimensions were significant and not equally contributing towards team task-performance. Two-way interaction of task-scope and task-coordination was significant when task-uncertainty was negligible. Thus both were not equally contributing towards team task-performance. From effect tests, task-coordination and task-uncertainty were found to be highly significant with relation to task-performance. Though task-scope was not significant, further analysis reveals that it had significant impact on task-performance at its highest level and when task-uncertainty was negligible. Thus explains its inclusion in the three-way interaction.

Workload, a subjective team performance measure in team literature, was used for model cross-validation. Results found a significant negative correlation between perceived task-workload and task-performance, thereby validating the model from workload perspective. This study summarizes the different task-characteristics affecting the team task-performance. This study has practical implications in the design and evaluation of collaborative tools and team training. Further research would develop a synthetic collaborative system that would emulate certain complex work environments and enable the collection of team performance data for assessing hypotheses about collaboration.

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