![]() ![]() We defined "learning" a word as retaining it for a full week, which our users have demonstrated leads to a 70% chance of getting it right 30 days later. In this article, we share the results of a study we conducted over the past 6 months analyzing more than 15 million questions from real users learning real vocabulary words. So we set out to build the fastest way to learn vocabulary. Learning a language requires that people understand thousands of words, and our goal is to make that easier. At this rate, a person will learn 1,000 new words in just under 15 hours of study. In our research, we looked at 15 million questions over a period of six months, and we found that a user typically learns a word after 51 seconds of study, or about 9 question attempts. ![]() ![]() We defined "learned" as retained for at least a full week, which in turn gives a high likelihood of retaining it a full month later. We conducted a study to understand how long it takes to learn new vocabulary. Our vocabulary feature is designed to help people learn thousands of new vocabulary words as quickly as possible. ![]()
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