skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.


Title: System-level investigation of cognitive adaptation in incident management.
My dissertation research to date has focused on understanding how incident management teams (IMTs), hastily formed multidisciplinary multiteam systems, cognitively function together as adaptive, joint cognitive systems-of-systems embedded in complex sociotechnical systems. Catastrophic disasters such as Hurricane Harvey highlight the importance of collective efforts for adaptive incident management. Team cognition has emerged as a coordinating mechanism in safety-critical disciplines; however, little is known about cognition in IMTs. Through a scoping review of existing definitions, I proposed an expanded definition that deliberately takes into account IMT’s unique contextual characteristics, based on three premises: cognition in IMTs (1) manifests as interactions among humans, teams, and technologies at multiple levels of multiteam systems, (2) aims to achieve the system-level cognitive goals of perceiving (P), diagnosing, (D), and adapting (A) to information, and (3) serves as an open communication platform for adaptive coordination.Then, I operationalized our proposed definition in a simulated environment as an initial attempt to model IMTs’ system-level cognition. Based on several observations of IMTs’ naturalistic interactive behaviors under different types of disaster scenarios, I proposed a model that can capture how IMTs as joint cognitive systems (or systems-of-systems) perceive (P), diagnose, (D), and adapt (A) to information, i.e., perceive, diagnose, adapt (P, D, A) model. With an emphasis on system-level cognitive goals that applies to multiple units of analysis (e.g., individuals, dyads, teams, and multiteam systems), I could gain an understanding of system-level cognitive adaptation in incident management. Using the P, D, A model as a base platform, I expect to discuss resilience as cognitive adaptation processes along with its implications on human information processing and joint cognitive systems theories.I became a Ph.D. candidate after successfully proposing my dissertation research in last June. After completing data collection and processing, I am currently working on data analysis and manuscript preparation. As a part of NSF-funded project (NSF EArly-concept Grant for Exploratory Research, #1724676), I believe my dissertation work has a potential to practically impact scenario-based training practices of incident management, and thereby lead to a more rapid and better coordinated decision-making in saving lives and infrastructures.  more » « less
Award ID(s):
1724676
PAR ID:
10135711
Author(s) / Creator(s):
Date Published:
Journal Name:
Resilience Engineering Association (REA) Symposium
Volume:
2019
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
More Like this
  1. In this pilot study, we used the Interaction Dynamics Notation (IDN), originally designed for use with engineering design teams, to explore the dynamic interactions of five NSF I-Corps™ teams engaged in a simple design activity. Our aim was to relate these interaction data to selected cognitive characteristics of the team members, as well as team design outcomes and individual perceptions related to the experience. The individual cognitive characteristics we assessed focused on cognitive style, as measured by the Kirton Adaption-Innovation inventory (KAI), while team outcomes included the novelty, usefulness, and feasibility of each team’s design solutions, as well as their success within and beyond the NSF I-Corps™ program. Our findings show that the Interaction Dynamics Notation (IDN) can be readily extended to the study of entrepreneurial teams, with important insights gained from the combined study of interaction dynamics, individual cognitive characteristics as measured by KAI, and team outcomes. The results of this study demonstrate the feasibility and value of this approach for investigating the dynamic interactions of NSF I-Corps™ teams, as well as product-focused design teams in general. 
    more » « less
  2. A metacognitive radar switches between two modes of cognition— one mode to achieve a high-quality estimate of targets, and the other mode to hide its utility function (plan). To achieve high-quality es- timates of targets, a cognitive radar performs a constrained utility maximization to adapt its sensing mode in response to a changing target environment. If an adversary can estimate the utility function of a cognitive radar, it can determine the radar’s sensing strategy and mitigate the radar performance via electronic countermeasures (ECM). This article discusses a metacognitive radar that switches between two modes of cognition: achieving satisfactory estimates of a target while hiding its strategy from an adversary that detects cognition. The radar does so by transmitting purposefully designed suboptimal responses to spoof the adversary’s Neyman–Pearson de- tector. We provide theoretical guarantees by ensuring that the Type-I error probability of the adversary’s detector exceeds a predefined level for a specified tolerance on the radar’s performance loss. We illustrate our cognition-masking scheme via numerical examples in- volving waveform adaptation and beam allocation. We show that small purposeful deviations from the optimal emission confuse the adversary by significant amounts, thereby masking the radar’s cognition. Our approach uses ideas from revealed preference in microeconomics and adversarial inverse reinforcement learning. Our proposed algorithms provide a principled approach for system-level electronic counter- countermeasures to hide the radar’s strategy from an adversary. We also provide performance bounds for our cognition-masking scheme when the adversary has misspecified measurements of the radar’s response. 
    more » « less
  3. While resilience in emergency management has been studied at the macro- (government) and micro-levels (individual field responder), little is known for resilience of incident management teams (IMTs). To investigate challenges and resilience factors of IMTs, this paper documents thematic analysis of 10 interviews with emergency personnel who responded to Hurricane Harvey in 2017. Themes emerged in four categories: goals, challenges, resilience factors, and technical tools of IMTs. Given similar goals but unique challenges during Harvey, IMTs sought to establish and maintain a common operating picture to make sense of evolving situations and make decisions adaptively. Various technical tools were used providing different functionalities, but a need for technology to reduce cognitive load was indicated. Findings of this study will inform the development of more resilient IMTs in future disasters. 
    more » « less
  4. It is now well established that memory representations of words are acoustically rich. Alongside this development, a related line of work has shown that the robustness of memory encoding varies widely depending on who is speaking. In this dissertation, I explore the cognitive basis of memory asymmetries at a larger linguistic level (spoken sentences), using the mechanism of socially guided attention allocation to explain how listeners dynamically shift cognitive resources based on the social characteristics of speech. This dissertation consists of three empirical studies designed to investigate the factors that pattern asymmetric memory for spoken language. In the first study, I explored specificity effects at the level of the sentence. While previous research on specificity has centralized the lexical item as the unit of study, I showed that talker-specific memory patterns are also robust at a larger linguistic level, making it likely that acoustic detail is fundamental to human speech perception more broadly. In the second study, I introduced a set of diverse talkers and showed that memory patterns vary widely within this group, and that the memorability of individual talkers is somewhat consistent across listeners. In the third study, I showed that memory behaviors do not depend merely on the speech characteristics of the talker or on the content of the sentence, but on the unique relationship between these two. Memory dramatically improved when semantic content of sentences was congruent with widely held social associations with talkers based on their speech, and this effect was particularly pronounced when listeners had a high cognitive load during encoding. These data collectively provide evidence that listeners allocate attentional resources on an ad hoc, socially guided basis. Listeners subconsciously draw on fine-grained phonetic information and social associations to dynamically adapt low-level cognitive processes while understanding spoken language and encoding it to memory. This approach positions variation in speech not as an obstacle to perception, but as an information source that humans readily recruit to aid in the seamless understanding of spoken language. 
    more » « less
  5. How does cognitive diversity in a group affect its performance? Prior research suggests that group cognitive diversity poses a performance tradeoff: Diverse groups excel at creativity and innovation, but struggle to take coordinated action. Building on the insight that group cognition is not static, but is instead dynamically and interactively produced, we introduce the construct of discursive diversity, a manifestation of group cognitive diversity, which reflects the degree to which the meanings conveyed by group members in a given set of interactions diverge from one another. We propose that high-performing teams are ones that have a collective capacity to modulate shared cognition to match changing task requirements: They exhibit higher discursive diversity when engaged in ideational tasks and lower discursive diversity when performing coordination tasks. We further argue that teams exhibiting congruent modulation—that is, those with low group-level variance in members’ within-person semantic shifts to changing task requirements—are more likely to experience success than teams characterized by incongruent modulation. Using the tools of computational linguistics to derive a measure of discursive diversity and drawing on a novel longitudinal data set of intragroup electronic communications and performance outcomes for 117 remote software development teams on an online platform ( www.gigster.com ), we find support for our theory. Our findings suggest that the performance tradeoff of group cognitive diversity is not inescapable: Groups can navigate it by aligning their levels of discursive diversity to match their task requirements and by having members stay aligned with one another as they make these adjustments. This paper was accepted by Isabel Fernandez-Mateo, organizations. Funding: Financial support from the NSF-CAREER [Grant 1847091] is gratefully acknowledged. Supplemental Material: Data are available at https://doi.org/10.1287/mnsc.2021.4274 . 
    more » « less