I had never heard about this association between behavioural problems and older mothers, and being an older mother myself I looked into it and found that older mothers actually have children with fewer behaviour problems if current studies are anything to go by, though the risk of chromosomal abnormalities and birth complications does increase.
New research has found children born to mothers in their mid-30s and above are less likely to have behavioural problems than those with younger mothers. http://www.abc.net.a...roblems/5964572[/size]
Older mothers are less likely to punish and scold their children while raising them, and that the children have fewer behavioral, social and emotional difficulties, according to a recent study. https://www.scienced...70321110352.htm [/size]
Also, infant mortality is not linear as you suggest. White women ages 12-24 have higher infant mortality rates as do 40+, with the lowest infant mortality rates occurring for the 25-39 year old group. [/size]
For Black women infant mortality is more linear, with younger mothers having lower infant mortality rates, though infant mortality even for young mothers is more than twice as high as any age white woman. In general these figures reflect the differences in the health of the mothers, not their age. See https://www.terpconn...ntMortality.pdf[/size]
Your figures prove an arguement you have decided to win.
My wife and I had a child as older people - what I was relating to has nothing to do with upbringing - I was talking about normal statistical analysis.
If you look at average birth health from 18-24 you will find very healthy relationships to the babies health.
Physically and therefore also behaviorally as this effects the overall statistic since those with birth defects / variants often have associated behavior problems.
As women age the statistics for problems simply rise. From 39-45 their is a marked difference, beyond that the difference is very dramatic.
Now if you want to add in very young girls - ages 12-17 you are adding a group that will also have considerable complications.
But if you are comparing countries - which I was - Estonia for example does not have lots of 12 year olds giving birth - they have lots of women statistically younger as a group than the general group in the USA.
The general trend in the USA is that fewer teens and early 20 something women are giving birth and increasingly women in the 40+ category are having births. The stats for the 40-50 year olds have dramatic increases in complications.
Edited by Spotless, 19 April 2017 - 08:50 PM.