Matthew Hallowell

Matthew Hallowell
University of Colorado Boulder | CUB · Department of Civil, Environmental and Architectural Engineering (CEAE)

PhD

About

139
Publications
120,298
Reads
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6,385
Citations
Citations since 2017
55 Research Items
5236 Citations
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Additional affiliations
August 2008 - present
University of Colorado Boulder
Position
  • Beavers Professor of Construction Engineering
Education
August 2005 - June 2008
Oregon State University
Field of study
  • Civil Engineering, Occupational Safety and Health
May 2004 - May 2005
Bucknell University
Field of study
  • Civil Engineering
August 2000 - May 2004
Bucknell University
Field of study
  • Civil Engineering

Publications

Publications (139)
Preprint
Full-text available
In this study, we capitalized on a collective dataset repository of 57k accidents from 9 companies belonging to 3 domains and tested whether models trained on multiple datasets (generic models) predicted safety outcomes better than the company-specific models. We experimented with full generic models (trained on all data), per-domain generic models...
Article
Research suggests safety reviews are important for Construction Hazard Prevention through Design implementation. Various visual stimuli exist when performing safety reviews and may affect the mental workload of Construction Hazard Prevention through Design tasks. However, no research addresses how spatial cognitive capability, or the format of visu...
Article
Although there are growing number of studies that investigate the influence of safety climate on safety outcomes, the relationship between safety climate and individual risk-taking behavior remains unknown. This study leverages survey data from 11,811 construction workers from 19 countries to empirically validate the associations between safety cli...
Article
Full-text available
Serious injuries and fatalities (SIF) continue to be an enigmatic problem in the construction industry. Researchers have begun to explore new ways of preventing these incidents by developing and testing leading indicators, precursor analysis, and risk assessment supported by data analytics. These recent themes suggest a new paradigm in safety predi...
Article
Full-text available
Despite the development and implementation of intensive health and safety training programs, the construction industry still remains one of the most dangerous industries. To remain safe, workers must be able to effectively identify, value, and respond to dangers in their work environment. The sense of comfort or discomfort associated with a hazard...
Article
In construction engineering and management (CEM) research, conducting field studies often is infeasible because of resource constraints, limited access to sites, practicality, confounding factors, and ethical limitations. Thus, researchers rely on the collection and analysis of expert opinions as an alternative method. Delphi, the nominal group tec...
Conference Paper
Full-text available
Hazard recognition is a fundamental skill required for nearly all construction injury prevention activities. Unfortunately, researchers have consistently found that work crews identify and discuss less than half of the hazards that they face in a typical work period. Fatigue has shown to compromise workers attention and reaction capabilities. Howev...
Article
This paper examines the evidence behind two widely accepted theories in Prevention through Design (PtD) research. The concept of mitigating/removing construction hazards during design, is relatively new considering the history of construction work. Within this domain, two heavily cited theories serve as a foundation of a substantial portion of the...
Article
Full-text available
In light of the increasing availability of digitally recorded safety reports in the construction industry, it is important to develop methods to exploit these data to improve our understanding of safety incidents and ability to learn from them. In this study, we compare several approaches to automatically learn injury precursors from raw constructi...
Technical Report
Full-text available
The present document is a technical report that was delivered by Safety AI as part of a consulting project. It is made publicly available in an anonymized form with expressed consent from the client. The objective of making this report publicly available is twofold: giving future Safety AI's clients a better idea of what they can expect out of a pr...
Article
Disparities in worker risk tolerance may create barriers to implementing safety management systems and improving safety performance. At present, it is unclear if and to what extent construction safety risk tolerance vary across broad geographic regions. To better understand patterns in these sociocultural constructs, a survey of building trade cont...
Article
A series of simulated design for safety reviews with civil engineering students, construction and engineering designers, and construction supervisors were conducted across the United States to explore the effects that different formats of design information have on hazard recognition performance during construction hazard prevention through design...
Article
There is emerging evidence that emotional states can influence human decision making under uncertainty. However, it remains unclear if and how emotions influence people' ability to recognize hazards, assess safety risk, and make decisions within an occupational safety context. Literature from construction safety, risk perception, and decision scien...
Article
Construction Hazard Prevention through Design (CHPtD) is the consideration for worker safety in the design phase of a construction project. CHPtD theory has seen an abundance of research in recent years, most of which research has been conducted to validate the CHPtD concept using logical argument and qualitative evidence. However, there is a deart...
Preprint
This paper significantly improves on, and finishes to validate, the approach proposed in "Application of Machine Learning to Construction Injury Prediction" (Tixier et al. 2016 [1]). Like in the original study, we use NLP to extract fundamental attributes from raw incident reports and machine learning models are trained to predict safety outcomes (...
Preprint
Full-text available
Accepted for publication in Automation in Construction (preprint available online since 16 Aug 2019). This paper significantly improves on, and finishes to validate, the approach proposed in "Application of Machine Learning to Construction Injury Prediction" (Tixier et al. 2016). Like in the original study, we use NLP to extract fundamental attribu...
Preprint
Full-text available
In light of the increasing availability of digitally recorded safety reports in the construction industry, it is important to develop methods to exploit these data to improve our understanding of safety incidents and ability to learn from them. In this study, we compare several approaches to automatically learn injury precursors from raw constructi...
Preprint
Full-text available
Accepted for publication in Automation in Construction (Preprint available online since 26 Jul 2019) (1) We propose several methods to automatically learn injury precursors from raw construction accident reports, (2) precursors are learned by multiple supervised models as a by-product of training them at predicting safety outcomes, (3) we experimen...
Conference Paper
Full-text available
A critical component of maintaining safety is to ensure that workers feel uncomfortable partaking in risky behavior. An individual's willingness to engage in unsafe behavior is measured as risk tolerance. Given its subjective nature, risk tolerance is challenging to manage. However, understanding and influencing risk tolerance is essential to promo...
Conference Paper
Full-text available
The high frequency of work-related injuries and fatalities experienced on construction sites makes the construction process a very hazardous endeavor. The collection and analysis of safety data is an important element in measurement and improvement strategy development. Wearable sensing devices (WSDs) and the internet of things (IoT) have been iden...
Article
Construction safety prediction is an emerging field where various forms of information and analytical techniques are used to predict the likelihood or severity of a future injury. A review of this literature reveals that even though the approaches are used for the same goal of predicting future safety outcomes, they are modeled independently and ex...
Article
Safety training within the construction industry is often quite mundane and generic which is a problem for an industry combatting with high fatality rates on job sites for decades. Recent studies have found construction safety training programs severely lacking in developing hazard recognition and risk assessment skills among its workforce. Moreove...
Article
Safety leading indicators are measures of the safety management system that correlate with injury rates. The literature on the topic is dispersed and equivocal in the definition, categorization, and measurement of candidate indicators, which makes validation and replication difficult. This study includes a comprehensive review of safety leading ind...
Article
Within the construction industry, electrical transmission and distribution workers (TD workers) account for one of the highest fatality rates. Because of the hazardous nature of the work, there is little margin for human error. Previous research shows that fatigue exacerbates human error, thus representing a critical safety factor for TD work. Alth...
Article
Worldwide, manufacturers are reimagining the future of their workforce and its connection to technology. Rather than replacing humans, Industry 5.0 explores how humans and robots can best complement one another's unique strengths. However, realizing this vision requires an in-depth understanding of how workers view the positive and negative attribu...
Conference Paper
Full-text available
The construction industry involves highly hazardous working conditions, where workers need to identify and assess a litany of risks on jobsites resulting from the varied high-energy work being performed around them. Research suggests that, while the traditional training approaches offer value, they do not sufficiently prepare workers to eliminate p...
Article
This study investigated the empirical relationship between measures of construction safety climate dimensions and safety performance. A comprehensive review of existing literature of construction safety climate was conducted to: (1) review the questionnaires used to measure safety climate dimensions in the construction industry; (2) identify the sa...
Article
Purpose Selecting an optimal quality assurance (QA) process can have significant implications on the long-term durability and lifecycle costs of transportation projects. Currently, the approaches used by state departments of transportation (DOTs) to optimize QA are undocumented and the impact of project-specific factors are unknown. The paper aims...
Article
The increasing commitment to safety over the last two decades has contributed to a 67% decline in recordable incident rates. The rate of fatalities, however, has recently increased. Human factors, like fatigue, strongly relate to fatalities. The prediction of fatigue would allow for an early intervention, thus mitigating safety risk. The literature...
Article
Recreational drug use in construction is an area of concern for safety managers, and the legalization of marijuana in several US states may result in increased use among workers. Experimental approaches and policy creation are not straightforward because of the problems around existing methods of drug testing for marijuana that stem from the fact t...
Conference Paper
Situational awareness concept has been long used in aviation and medical fields to understand and improve an individual's ability to interact and comprehend complex dynamic environments. This study attempts to empirically test situational awareness model proposed by Endsley within construction domain. Specifically, we will test how different levels...
Conference Paper
Full-text available
Robust hazard recognition is critical to reducing the estimated 1,000 fatalities and 230,000 injuries in the U.S. construction industry each year. By adopting methods from neuroscience, this research develops a more accurate method to measure and differentiate cognitive response during hazard recognition tasks. The hypothesis is that the temporal r...
Conference Paper
The design for safety concept has gained traction in the construction industry as being a viable method for removing safety hazards. Much research has used subjective data to support arguments for the concept; however, the concept has limited support from empirical research. In an effort to better understand how hazards are identified in design, th...
Article
The construction process is considered a very risky endeavor because of the high frequency of work-related injuries and fatalities. The collection and analysis of safety data is an important element in measurement and improvement strategy development. The adoption of wearable technology has the potential for a result-oriented data collection and an...
Article
Proper hazard recognition and communication are fundamental to injury prevention in construction. When construction hazards remain unrecognized, the likelihood of injuries in the workplace increases. Therefore, construction employers encourage their workers to actively participate in prejob safety meetings to facilitate the recognition, communicati...
Article
Large construction projects frequently operate with multi-national workforces, utilizing migrant workers to provide both skilled and unskilled labour. Multi-national workforces are also brought together through joint ventures, as companies from different countries collaborate and share their expertise to construct large and complex construction pro...
Article
Poor hazard recognition skills and high tolerance for risk are well-known contributing factors to high fatality rates plaguing the construction industry. The prevailing safety training techniques involve one-way delivery of slideshow presentations with written handouts that often describe common hazards and generic solutions. Such delivery does not...
Article
Full-text available
We propose and experimentally validate a novel energy-based training module aiming at rapidly improving hazard recognition skills in Civil, Environmental, Architectural and Engineering (CEAE) students. The module is based on the established theory that every construction hazard is fundamentally related to the unwanted release of one or more energy...
Conference Paper
Alcohol and recreational drug use in construction is an area of growing concern, workers often found to have higher prevalence of such behaviours than those in other industries at both global and national levels. Potential reasons for this are many. The social determinants of health (the reasons why people drink or take recreational drugs) negative...
Conference Paper
Full-text available
Recent evidence indicates that construction workers fail to recognize many safety hazards that arise during construction activities. Previous research has focused hazard recognition skill but has not examined if the proportion of hazards viewed correlates with hazard recognition performance. To study this topic 18 subjects were fitted with mobile b...
Article
In order to prevent fatalities, new methods of evaluating work conditions and making predictions are needed. Nuclear energy, chemical manufacturing, and commercial airline industries have all used precursor analysis to predict and prevent catastrophic events. This paper presents the first steps toward a precursor-analysis process for the constructi...
Article
Fatalities continue to plague the construction industry. To address this ongoing concern, researchers have begun to develop and test proactive methods to improve construction safety, such as risk analysis, leading indicators, and predictive analytics. The present study aims to build upon these current methodologies by creating and testing the first...
Article
One explanation for high injury rates and the recent plateau in construction safety performance is that workers remain unable to recognize and manage hazards in dynamic and transient construction environments. This notion is supported by recent experimental studies, which revealed that workers are typically unable to identify and manage over 55% of...
Article
Although the quantity and quality of safety risk data have improved in recent years, available data do not link directly to natural principles and are, therefore, limited in their application and scientific extension. The present study aims to test the hypothesis that the quantity and intensity of energy observable prior to an incident predicts the...
Article
Construction still accounts for a disproportionate number of injuries, inducing consequent socioeconomic impacts. Despite recent attempts to improve construction safety by harnessing emerging technologies and intelligent systems, most frameworks still consider tasks and activities in isolation and use secondary, aggregated, or subjective data that...
Article
Full-text available
We introduce word vectors for the construction domain. Our vectors were obtained by running word2vec on an 11M-word corpus that we created from scratch by leveraging freely-accessible online sources of construction-related text. We first explore the embedding space and show that our vectors capture meaningful construction-specific concepts. We then...
Article
Full-text available
By building on a recently introduced genetic-inspired attribute-based conceptual framework for safety risk analysis, we propose a novel methodology to compute univariate and bivariate construction safety risk at a situational level. Our fully data-driven approach provides construction practitioners and academicians with an easy and automated way of...
Article
Safety performance data collected over a five year period, at a large Australian infrastructure project was analysed. The analysis examined the temporal relationships between the safety performance indicators measured at the project, including traditional lagging indicators, as well as expected leading indicators. The purpose of the research was to...
Article
Objective: The study objective was to statistically codify empirical occupational fatigue literature into a systems model depicting causal factors of fatigue; interrelationships among causal factors; outcomes of fatigue; and interrelationships among outcomes. Methods: The objective was achieved via a comprehensive and systematic review of existi...
Article
Purpose The architecture, engineering and construction industry is known to account for a disproportionate rate of disabling injuries and fatalities. Information technologies show promise for improving safety performance. This paper aims to describe the current state of knowledge in this domain and introduces a framework to integrate attribute-leve...
Conference Paper
Full-text available
There is a need to better understand the capacity of the U.S. construction industry to rebuild post-disaster, when there is increased demand for construction resources. The current U.S. residential housing stock is particularly vulnerable to wind damage, with tornado events causing catastrophic damage to homes each year. A method is proposed to ana...
Article
The needs to ground construction safety-related decisions under uncertainty on knowledge extracted from objective , empirical data are pressing. Although construction research has considered machine learning (ML) for more than two decades, it had yet to be applied to safety concerns. We applied two state-of-the-art ML models, Random Forest (RF) and...
Article
This study compares Choosing By Advantages (CBA) and Weighting Rating and Calculating (WRC) as Multiple Criteria Decision Making (MCDM) methods in how they support collaboration in groups, particularly pertaining to design decisions involving sustainability factors in architecture, engineering and construction industry. This study is based on an ex...
Conference Paper
Many of the greatest catastrophes caused by human error such as Three Mile Island, Chernobyl and Exxon Valdez occurred after extended hours of work when the levels of fatigue among workers were extremely high. Fatigue, which recent research has identified as a principal precursor of many construction accidents, has not been managed well because the...
Conference Paper
Full-text available
Construction sites are characterized by rugged outdoor environments, changing site conditions, and dynamic interactions between resources including personnel, equipment, and materials. These harsh environmental conditions and working situations have a unique impact on construction equipment operator’s physiological information. The primary objectiv...
Conference Paper
Every safety meeting and training program is built upon the assumption that construction workers can identify hazards. However, recent research has shown that may not be true because construction workers and managers lack basic hazard recognition skills. Currently, there is relatively little understanding of the factors impacting hazard recognition...
Article
Improving safety performance is paramount to the success of oil and gas construction projects. Although considerable attention has been paid to developing and using new types of safety performance indicators, contractor safety has traditionally been measured and managed through lagging indicators. Alternatively, risk mitigation measures can be used...
Article
The US construction industry has long been responsible for a high injury and fatality rate. Within this dangerous industry, Hispanic workers are 45% more likely to be injured or killed than their non-Hispanic counterparts. Previous researchers have examined reasons for these disproportionate injury rates but past literature is spurious, fragmented,...
Article
Full-text available
In the United States like in many other countries throughout the globe, construction workers are more likely to be injured on the job than workers in any other industry. This poor safety performance is responsible for huge human and financial losses and has motivated extensive research. Unfortunately, safety improvement in construction has decelera...
Conference Paper
Full-text available
Safety training is a vital component of any construction organization's safety program. Training offers an opportunity for the transfer of explicit and tacit knowledge of safe work practices. Often, safety training focuses on core issues faced by the specific organization and links to desired worker behaviour. Unfortunately, the typical delivery mo...
Article
Identifying and evaluating solutions for critical industry challenges is a major theme of construction engineering and management (CEM) research. Researchers and practitioners in the construction sector often seek to invent, test, implement, and disseminate practical interventions that improve safety, productivity, quality, and other project succes...
Article
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Quantifying safety risks and performing comparative analyses is an emerging research field. Unfortunately, current risk assessment strategies are problematic because they require every new infrastructure feature and construction method to be individually evaluated using laborious research processes. To enhance the current construction safety manage...
Article
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One of the recent advancements in preconstruction safety management is the identification and quantification of risks associated with fundamental attributes of construction work environments that cause injuries. The goal of this paper is to test the validity of using these fundamental risk attributes to predict safety outcomes. The modeling approac...
Article
Full-text available
Despite strong advancements in construction safety performance over the past few decades, injuries still occur at an unacceptable rate. Researchers have shown that risk-taking behavior, originating mainly from inaccurate perception and unacceptable tolerance of safety risk, is a significant factor in a majority of construction injuries. Based on ps...
Article
Hazard identification and communication are integral to most construction methods, and every construction safety management activity. Unfortunately, in practice, significant hazards are often not recognized and communicated leading to sub-optimal hazard awareness at the crew level. To bridge this gap in performance, we conducted a two-year intensiv...
Article
Rural transit projects are often small in scope but numerous and geographically dispersed. Management of these projects can be challenging because of very limited resources, unique risk factors, and a lack of construction management expertise. Without effective construction management strategies, it is unlikely that rural transit projects will be o...
Conference Paper
Full-text available
Hazard recognition and communication is critical for preventing injuries on construction projects. Across the industry, employers encourage workers to conduct regular prejob safety meetings and hazard analyses to identify, communicate, and mitigate site-based hazards. Although such programs promote safety, potential benefits often are lost because...
Article
Most construction safety management processes rely on the hazard recognition capability of workers. Hazards that remain unidentified can potentially result in catastrophic injuries and illnesses. As such, thorough hazard recognition is fundamentally essential to protect the health and well-being of the construction workforce. Despite its importance...