Mar 10, 2016 NPR Books · Author Interviews; Find Books; Reviews . "A 6-year-old is just not the same as a 7-year-old." who are born just before the cutoff date for grade school entry choose to hold their offspring back one year. In most of the studies done on relative age and ADHD, the difference in diagnosis rates
In many countries, the age difference between spouses at marriage has remained relatively stable for several decades. . entries dating from 1688 to 1921 from two neighboring parishes in Germany. In contrast, the reviews of Berardo et al. . who are more than 7 years but less than 17 years younger than their wives.