Many Americans use smartphones for most or all of their day-to-day communication activities. One result is that people have gotten 1. ___ ___ ___ ___ ___ ___ ___ ___ ___ on their phones. But how fast are we at using an electronic device 2. ___ ___ ___ ___ ___ ___ ___, ___ ___? A new study has some answers. A team of researchers carried out an experiment. It involved more than 3. ___ ___ ___ ___ ___ ___. The study was a project of researchers from Finland’s Aalto University, England’s University of Cambridge and ETH Zurich, the Swiss Federal Institute of Technology. They used an Internet-based system to test the typing speed of people on their smartphones. On average, the volunteers estimated they spent about six hours a day using their phones. 4. ___ ___ ___ ___ ___ ___ ___ ___ ___ ___. Both Android and iPhone users were tested, and most said they used the device’s standardkeyboard. The volunteers were given 15 English sentences to type out on their phones “5. ___ ___ ___ ___ ___ ___.” The research team found that on average, people wrote about 36 words per minute. Those tested made a typing mistake 2.3 percent of the time. The researchers noted that 6. ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ for people using a computer keyboard. In a 2018 University of Cambridge study, the average speed for computer typists was about 52 words per minute. The researchers noted one reason for the narrowing of speed rates between smartphones and computers. They said people have become slower at typing on keyboards over the years. Seventy-five percent of those taking part in the study had typing speeds below 44 words per minute. But the fastest phone typists reached speeds of over 80 words per minute. The published results show there was 7. ___ ___ ___ ___ ___ ___ ___ ___ ___ ___. Subjects who reported using two thumbs or two fingers reached speeds of 38 words per minute. Those who said they used only one finger typed 29 words per minute. Among age groups, the fastest typists on an electronic device were between 10 and 19 years old. They typed nearly 40 words per minute. People aged 40 to 49 wrote about 29 words per minute. And 8. ___ ___ ___ ___ ___ ___ ___ ___ for those aged 50 to 59. The researchers call the difference between typing words on a smartphone and a physical keyboard "9. ___ ___ ___." They predict this gap will further narrow in the future as people get less skilled with keyboards and as 10. ___ ___ ___ ___ ___ ___ ___ ___ ___.