http://www.gzt.ru/topnews/education/238014.html - это я писал популярно вот по этому вот: http://www.ufn.gu.se/english/News/newsdetail?contentId=879270

The development is not as positive in terms of teenagers’ verbal capacity. After an increase during the 1960s, the test values start declining slowly before falling even more substantially from 1985.

This is primarily due to the fact that the test is a vocabulary test and many of the words that are included are relatively uncommon in current Swedish. The analyses also reveal that it is precisely the old-fashioned words, such as ”destitution” and ”copious”, that over time have become more difficult for teenagers, while words such as ”separate” and ”attack” have become easier for them to deal with.