So it may be that older people just have lower IQ (Flynn effect).
The 1600 SAT was renormed in 1994, and scores afterwards are much higher (and not directly comparable) to scores before. As well, depending on how the ‘null’ is interpreted, the youngest are unlikely to have a SAT score out of 1600, because it switched to 2400 in 2005. The line between having a score out of 1600 or not is probably at about 22 years old.
The 1600 SAT was renormed in 1994, and scores afterwards are much higher (and not directly comparable) to scores before. As well, depending on how the ‘null’ is interpreted, the youngest are unlikely to have a SAT score out of 1600, because it switched to 2400 in 2005. The line between having a score out of 1600 or not is probably at about 22 years old.