The Mars Society has been studying the effects of extended stays in closed environments on human health since 2002, and chose Paro for the tests on mental healthcare for astronauts.
In 2002, it was certified by Guinness World Records as the robot that produces the “greatest reduction in stress levels.” Following the Russian invasion of Ukraine, the robot was used in the mental care of Ukrainian refugees. The Paro used for the experiments was provided by Intelligent System Co., a manufacturer and distributor of electronic components based in Nanto, Toyama Prefecture.