More than a year-and-a-half after the onset of the COVID-19 pandemic, the scientific community is still feeling the effects of the vastly disruptive event—and may for many years to come.
A new Northwestern University-led study found that although researchers' productivity levels have mostly returned to pre-pandemic highs, scientists who did not pursue COVID-19-related research initiated 36% fewer new projects in 2020 compared to 2019. This dramatic decline in new projects suggests the pandemic's impact on science may be longer lasting than commonly imagined.
"On the surface, it appears that researchers are as productive as they used to be," said Northwestern's Dashun Wang, who led the study. "But, instead of generating new directions, they are busy working on established topics, writing up existing research, reviving legacy projects or revisiting old data. We found this to be true across many scientific disciplines—no fields were immune to the reduced number of projects."
The researchers also found the decline in pursuing new projects is particularly pronounced for women and caregivers of young children, potentially further exacerbating the pandemic's already unequal effects on these groups.
The study will be published Tuesday (Oct. 26) in the journal Nature Communications.
Wang is a professor of management and organizations at the Kellogg School of Managementand of industrial engineering and management sciences in the McCormick School of Engineering.He also is director of the Center for Science of Science Innovationand a core member of the Northwestern Institute for Complex Systems.
'Impact may not manifest for years'
The current study builds on Wang's work from April 2020, in which he surveyed about 4,500 scientists in the United States and Europe about their productivity levels. Published in Nature Human Behavior in July 2020, the study found that scientists, such as biologists and chemists, who relied on laboratories to conduct their research suffered a more drastic decline in research hours worked compared to scientists in fields that are less equipment-intensive, such as mathematics, statistics and economics. Moreover, researchers with children aged five years or younger experienced a 17% larger decline in research hours, compared to researchers in the similar fields but without young children.
With vaccine development well underway and the pandemic's end potentially in sight, Wang and his team revisited the work in Jan. 2021. They surveyed nearly 7,000 principal investigators based across the United States and Europe and analyzed the Dimensions database, the world's largest research information dataset.
In the new survey, Wang and his team asked the same questions about productivity as well as new questions about overall research activity and output, including the number of new research publications, new submissions, new collaborations and new research projects started before and during the pandemic.
Although researchers pursuing COVID-19-related work initiated about the same number of new projects in 2019 as in 2020, researchers conducting non-COVID-19-related work experienced a significant decline. These researchers indicated that they typically initiate approximately three new projects per year, which dropped to two new projects during 2020. The rate of new co-authorships for non-COVID-19 papers also declined by 5%.
"During the early phase of the pandemic, scientists reported a sharp decline in time spent on research," Wang said. "These productivity levels have recovered, which suggests some optimism. However, given the long gestation time for new research ideas to mature and be published, the decline in new projects suggests that the impact of the pandemic may not manifest in the publication record for years."
In-person interactions spark new ideas
Wang believes this work emphasizes the importance of face-to-face interactions and collaborations, which are often important channels for new ideas. He said the results could contribute to ongoing policy discussions aimed at encouraging social interactions, facilitating new collaborations and resuming in-person activities.
"As a researcher myself, I often meet new collaborators at conferences and dinners," Wang said. "I generate new ideas during coffee chats, bouncing around ideas with colleagues. Those interactions did not happen nearly as much during the pandemic."
But even as campuses and laboratories reopen, Wang cautions that life will continue to remain difficult for researchers with young children. While many institutions implemented policies, such as tenure clock extensions, to help parents and caregivers at the beginning of the pandemic, parents with young children continue to need support. Until children can be vaccinated, parents are generally remaining cautious—often foregoing travel and in-person events—in order to protect their children.
"Many institutions are evaluating short-term data to inform their reopening policies," Wang said. "Yet these short-term metrics may mask the long-lasting effects of the pandemic. Children under 12 remain ineligible for vaccines, which has further implications for scientists with young children. At the same time, our findings also suggest that short-term investments, such as childcare support, may yield long-term benefits."
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