Don’t forget those of us who aren’t native English speakers. Didn’t try it again recently, but I used to have a 5-10 points difference between an IQ test in French (my native language) and English. Word-related questions are of course harder, but even for the rest, I’m not sure if it’s because it took me longer to process the English (while the IQ is time-limited), or just that decoding a non-native language use more brain power (leaving less for solving the problem). But anyway, I score better in my native language than in English, and I answered with my score in native.
Don’t forget those of us who aren’t native English speakers. Didn’t try it again recently, but I used to have a 5-10 points difference between an IQ test in French (my native language) and English. Word-related questions are of course harder, but even for the rest, I’m not sure if it’s because it took me longer to process the English (while the IQ is time-limited), or just that decoding a non-native language use more brain power (leaving less for solving the problem). But anyway, I score better in my native language than in English, and I answered with my score in native.