Does the level of intelligence decrease? : a comparison between thirteen-year-olds tested in 1961, 1966 and 1980
Ingemar Emanuelsson & Allan SvenssonArtikkel Engelsk
*0011516778 *008870119s1986 xx# 000 0 eng *019 $bk *08230$a153.93 *100 $aEmanuelsson, Ingemar$_128739700 *245 $aDoes the level of intelligence decrease?$ba comparison between thirteen-year-olds tested in 1961, 1966 and 1980$cIngemar Emanuelsson & Allan Svensson *300 $aS. [25]-37 *700 $aSvensson, Allan$_164302800 *773 $tScandinavian journal of educational research$gVol. 30, no. 1 (1986)$x0031-3831$w(NO-LaBS)298121(tnr) *8564 $uhttps://doi.org/10.1080/0031383860300103 *999 $z8700082055$anorart:8700082055 ^