News Release

Psychological forest: What trees reveal about Antarctic researchers

Peer-Reviewed Publication

Research Organization of Information and Systems

Syowa Station

image: About 30 people winter over at the Japanese Antarctic research station, Syowa Station. Photographed on April 17, 2017. view more 

Credit: NIPR

At the bottom of the world, there's a small island about four kilometers off the coast of Antarctica. In summer, temperatures climb to freezing with uninterrupted daylight for two months. In winter, they fall to minus 40 degrees Celsius without a single sunrise for two months. It is isolated and desolate, uninhabitable to all humans -- except for the Japanese Antarctic Research Expedition (JARE). Almost every year since 1956, a JARE team winters over on the island, staying in Syowa Station, from February to January to conduct various research projects. From 2004 to 2014, however, they were also research subjects themselves.

As part of a joint project between the National Institute of Polar Research at the Research Organization of Information and Systems (ROIS) and the Antarctic Psychological Research team at Kyoto University, a series of non-invasive psychological surveys were administered six times to five different wintering-over teams.

The results were published online on Feb. 22 in the International Journal of Circumpolar Health.

"An Antarctic wintering-over station is a unique environment as a small, isolated society facing the extreme margins of survival," said first author Tomoko Kuwabara, professor emeritus in the Graduate School of Education at Kyoto University and professor in The Open University of Japan. "Although significant developments have been made in wintering-over operations, such as improved communications, it is still hard to stay an entire year in an Antarctic station, not only because of the cold, changes in daylight and exposure to UV rays, but also the isolation and the impossibility of escaping one's small social group. These conditions make an Antarctic station a unique society that can reveal much about human nature."

To better understand how team members' psychological states changed throughout their wintering-over experience, the 172 participants were asked to complete a questionnaire designed to assess mood and to draw trees. Known as the Baum test, how a participant draws trees is thought to reveal much about their mental state and personality.

Some participants depicted trees reminiscent of Japan, such as cherry trees or even a tree in a home garden, while others drew palm trees. Many sketched apple trees.

The researchers noticed the team members split themselves in two distinct groups: Those who drew the same trees every time they were asked, and those who drew different trees.

"These results suggest two types of coping among individuals: one stabilizes life by maintaining a previous lifestyle, and the other flexibly adjusts to a new way of life," Kuwabara said.

This assessment appeared to hold true across the questionnaires, but the researchers were unable to pinpoint any distinct personality traits that might make a person more or less suited to life at Antarctica.

"In general, wintering-over team members accepted their environment, and they did not act out emotionally or deny problems," Kuwabara said, noting that many seemed to draw comfort and stability from continuing to hold onto internal relationships with their family and home. "It is expected that our survey will contribute to the understanding of other isolated groups, such as crews on the space station or in other future space travel, as well as to group management in everyday societies."

The researchers plan to continue exploring how team members manage during wintering over, as well as how they readjust to typical life.


Co-authors include Nobuo Naruiwa, Department of Psychology, Faculty of Health Science, Kyoto Koka Women's University; Tetsuya Kawabe, Graduate School of Humanities and Sustainable System Sciences, Osaka Prefecture University; Nanako Kato, Department of Health Sciences, Faculty of Human Life and Environment, Nara Women's University; Asako Sasaki, Department of Student Affairs, Student Support Room, Ritsumeikan University; Atsushi Ikeda, Department of Urology, University of Tsukuba Hospital; Shinji Otani, International Platform for Dryland Research and Education, Tottori University; Satoshi Imura and Kentaro Watanabe, National Institute of Polar Research; and Giichiro Ohno, Department of Surgery, Tokatsu Hospital.

The National Institute of Polar Research, the Global Centers of Excellence Program and the Japan Society for the Promotion of Science funded this work.

About National Institute of Polar Research (NIPR)

The NIPR engages in comprehensive research via observation stations in Arctic and Antarctica. As a member of the Research Organization of Information and Systems (ROIS), the NIPR provides researchers throughout Japan with infrastructure support for Arctic and Antarctic observations, plans and implements Japan's Antarctic observation projects, and conducts Arctic researches of various scientific fields such as the atmosphere, ice sheets, the ecosystem, the upper atmosphere, the aurora and the Earth's magnetic field. In addition to the research projects, the NIPR also organizes the Japanese Antarctic Research Expedition and manages samples and data obtained during such expeditions and projects. As a core institution in researches of the polar regions, the NIPR also offers graduate students with a global perspective on originality through its doctoral program. For more information about the NIPR, please visit: https://

About the Research Organization of Information and Systems (ROIS)

The Research Organization of Information and Systems (ROIS) is a parent organization of four national institutes (National Institute of Polar Research, National Institute of Informatics, the Institute of Statistical Mathematics and National Institute of Genetics) and the Joint Support-Center for Data Science Research. It is ROIS's mission to promote integrated, cutting-edge research that goes beyond the barriers of these institutions, in addition to facilitating their research activities, as members of inter-university research institutes.

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