In the study, Norwegian epidemiologists analyzed data on birth order, health status and I.Q. scores of 241,310 18- and 19-year-old men born from 1967 to 1976, using military records. After correcting for factors that may affect scores, including parentsﾃ｢竄ｬ邃｢ education level, maternal age at birth and family size, the researchers found that eldest children scored an average of 103.2, about 3 percent higher than second children (100.3) and 4 percent higher than thirdborns (99.0).
To view links or images in this forum your post count must be 10 or greater. You currently have 0 posts.
There is something to be said (apparently) about being born first. :wink: