How each country’s players think, fast and slow

1. Country comes from the country the app records for each player (from their connection at sign-up or last visit), otherwise from the network address their answers were sent from. Only the country is used; addresses and accounts are never shown.
2. Disciplines group the games: Math (Mathematics, Math Matrix, Pyramid), Logic (Logic Challenge, Brainy Digits, Sudoku), Geography (Flags, Capitals, Maps, Landmarks), History, Literature & Music (Books, Music), Art, Science (Science, Space, Animals, Chemistry), Words (Wordy, Word order, Word list), Memory (Cubes, Twin cards) and Attention (Colors, Figures). A game counts once it is open to all players.
3. Accuracy: each answer is compared with the average answer at the same game and level, so hard games and high levels do not count against anyone. Each player counts once, and players with few answers count as closer to average.
4. Speed: the median time of correct answers, compared with all players at the same game and level. Sudoku, Wordy and Twin cards are left out because one answer there is a move or a guess.
5. Timeouts: answers where the clock ran out without a correct answer, compared with what is usual for the same games and levels.
6. Confidence: low below 3 players or 100 answers, high from 10 players and 400 answers. Drill-downs need 20 answers.
7. These are Cleverini players from each country, not the country as a whole. With one or two players, a profile is the result of one or two people.
8. Disciplines marked “English questions, beta” include new knowledge games whose questions are in English only for now. They count in the numbers, but stay out of the leaders and of strengths and room to grow until the questions are translated.

Rankings cover the 193 UN member states. Location comes from the connection, so VPNs and travel can place a player in another country.