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Portland State University


Beyond the 24-hour day: How employee biological clocks and beliefs drive workplace cooperation

A groundbreaking new study introduces the concept of Time-Extension Self-Efficacy (TESE), which predicts an employee's willingness to go the extra mile at work. The research found that organizations can influence these beliefs through simple recall exercises, boosting TESE and encouraging greater collaboration and flexibility.

SourcePortland State University·JournalOrganizational Behavior and Human Decision Processes·DateJul 2, 2026

The dehumanization effect: New PSU research examines how abusive supervision impacts employee agency and burnout

A new study by PSU researchers finds that abusive supervision can fundamentally alter how employees perceive their humanity, leading to severe burnout and decreased collaboration. In contrast, employees with a strong sense of self-efficacy are less susceptible to the dehumanizing effects of a toxic manager.

SourcePortland State University·JournalJournal of Occupational Health Psychology·DateMar 13, 2026

Support stops at the checkout line: Consumer stigma undermines ‘impact hiring’ initiatives

A new study reveals that consumers who morally support companies hiring homeless individuals often drop purchase intentions due to irrational 'contagion concerns', triggered by emotional reactions linked to stereotypes about hygiene and safety. Social proof appeals can counteract this bias, increasing purchase likelihood.

SourcePortland State University·JournalJournal of Consumer Psychology·DateJan 28, 2026

Study: When stress helps — or hurts — at work

A study by Portland State University's Liu-Qin Yang and colleagues found that challenge stressors can energize employees, boosting performance and collaboration, while hindrance stressors lead to emotional downs. The research also highlighted the importance of motivational mindsets in responding to stress.

SourcePortland State University·JournalJournal of Occupational Health Psychology·TypeSurvey·DateOct 13, 2025

PSU research shows Portland transit-oriented developments reduce car trips, especially at affordable housing sites

A new study by Portland State University's Transportation Research and Education Center (TREC) reveals that transit-oriented developments (TODs) in the Portland metro area generate significantly fewer car trips than previously estimated. At affordable housing sites, car trips were reduced to only a quarter to two-fifths of expected rates.

Microplastics widespread in seafood people eat

Researchers found 1,806 suspected particles across 180 samples of Oregon's marine and freshwater species. Pink shrimp had the highest concentrations, while Chinook salmon had the lowest. The study highlights a need for technologies to reduce microfiber pollution entering the environment.

SourcePortland State University·JournalFrontiers in Toxicology·TypeObservational study·DateJan 6, 2025

African voices in ink

The book uses a 'history from below' approach to center the voices of petitioners, revealing how they framed their demands using language like justice, rights, and equity. Through over 4,000 petitions, Dr. Bright Alozie shows the significance of this genre in shaping colonial society and influencing decision-making.

What's new in transportation data at PSU?

Portland State University's transportation data centers, PORTAL and BikePed Portal, have received significant updates with new funding and exciting innovations. The $1.6 million PORTAL funding will support its activities for the next five years, while BikePed Portal has secured $100K in additional funding.

PSU study sheds light on 2020 extreme weather event that brought fires and snow to western US

A PSU study analyzed the meteorology behind the September 2020 Western United States extreme weather event, which caused record-breaking cold temperatures and early-season snowfall in the Rocky Mountains. The research found that a highly amplified wave pattern persisted for several days, fueled by dry air from western Canada.

SourcePortland State University·JournalWeather and Climate Extremes·TypeComputational simulation/modeling·DateMar 1, 2024

Roe v. Wade repeal impacts where young women choose to go to college, PSU researcher finds

Research from Portland State University finds that female students are more likely to choose universities in states with upheld abortion rights, potentially affecting future workforces and economies. The study suggests a significant impact on the labor market as young people often live and work in the state they attend college.

SourcePortland State University·JournalEconomics Letters·TypeData/statistical analysis·DateOct 30, 2023

U.S. ninth graders’ math course placement at the intersection of learning disability status, race, and socioeconomic status

Researchers found that students with disabilities are disproportionately placed in lower-level math courses due to cumulative disadvantage. The study's intersectional framework highlights the complex relationships between learning disability status, race, and socioeconomic status.

SourcePortland State University·JournalAmerican Educational Research Journal·DateAug 25, 2023

Think you're good at math? PSU study shows it may be because you had equitable math teachers

A PSU study found that high school students who perceive their math teacher as equitable are more likely to develop a positive math identity. This effect is strongest in racially diverse schools, where students may be more aware of racial biases and stereotypes about math. Equitable teaching can help counteract these biases and promote...

SourcePortland State University·JournalSociology of Education·TypeSurvey·DateMar 2, 2023

Portland State study discovers immense diversity and interdependence in high temperature deep-sea microorganism communities

A new study by Portland State University researchers found that deep-sea microorganisms thrive in high-temperature environments and exhibit a staggering level of diversity, with over 500 new genera discovered. The microbes also rely on each other for survival through metabolic handoffs, revealing a complex interdependence.

SourcePortland State University·JournalMicrobiome·TypeData/statistical analysis·DateJan 23, 2023

How supervisors can create a better work environment for deaf or hard-of-hearing employees

Researchers found that the severity of an employee's hearing loss influences their reliance on professional connections, which affects career outcomes. Managers can offer tailored support to help employees build professional connections, such as providing accommodations and creating a culture of respect. This study suggests that even e...

SourcePortland State University·JournalJournal of Management·TypeData/statistical analysis·DateJan 13, 2023