In addition, some of the materials used in IQ tests may be totally foreign to certain cultures, thus creating inequalities and biases. It is interesting to note that IQ scores have increased so much over the 20th century that most of today's test takers would be considered 'geniuses' by 1900 standards.
Digital subscriber line (DSL; originally digital subscriber loop) is a family of technologies that are used to transmit digital data over telephone lines.
Both DSL (ADSL1) and ADSL2+ filters are low-pass filters designed to block anything that is higher then the frequencies used for analog voice on the phone network.This means that the filter frequency is the same (somewhere between 5 and 25kHz)!oth DSL (ADSL1) and ADSL2+ filters are low-pass filters designed to block anything that is higher then the frequencies used for analog voice on the phone network.