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[–]radicalcentristNational Centrism[S] 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (5 children)

First study: Average IQ of 84 for Orphan kids vs 104 when raised by parents

https://www.jstor.org/stable/23096249?seq=1

Second Study: Lowest IQ of 54 for Orphan girls and 81 for Orphan boys. Greek Kids later raised by parents had IQs of 106.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5083169/

Romanian Kids IQ improve when removed from the foster homes

https://www.jstor.org/stable/23092572?seq=1

Neurodevelopmental Effects of Early Deprivation in Post-Institutionalized Children

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2846096/

[–][deleted] 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (3 children)

None of these appear to look at adults. We already know that IQ is more environmental during childhood, but by adulthood genetics predominate.

[–]radicalcentristNational Centrism[S] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (2 children)

But the most important part of development happens when we're kids. Mess that up and it's no surprise the damage is permanent. It reminds me of the plants deprived of nutrition analogy. It doesn't matter if both still have the same lighting and genes. Environment will dictate if the final plant will actually grow up straight, or limp to the ground.

https://upload.wikimedia.org/wikipedia/commons/6/6b/Heritability_plants.jpeg

[–][deleted] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (1 child)

Mess that up and it's no surprise the damage is permanent.

But that's not what the studies actually show.

[–]radicalcentristNational Centrism[S] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

I'm confused. Are you saying stunting childhood development has no affect on adults later in life? North Koreans haven't grown any taller or matched their South Korean counterparts when they're adults.

https://i.imgur.com/0bX5C0j.jpg

Damaging the brain when it's still developing is not the recipe for creating high IQ geniuses later in life.

Edit: And from my own link, it mentions the physical and biological properties of the brain in post orphanage children differs from healthy adults and children. I'm not sure how becoming an Adult is suppose to fix this.

Although it is critical to understand whether and how postnatal deprivation/neglect influences brain development in human children, the human neuroscience evidence is sparse. Two studies conducted by Chugani and colleagues reported that post-institutionalized (PI) children from Romania showed significantly decreased metabolism bilaterally in the orbital frontal gyrus, the infralimbic prefrontal cortex, the medial temporal structures (amygdala and head of hippocampus), the lateral temporal cortex, and the brain stem as compared to normal adults and children with chronic epilepsy.