Please note that “infant IQ” is a very non-standard use; the article says “ability to process information” instead.
Before three years, things are so difficult to measure that even mental retardation is not diagnosed at that age. I am not surprised by the correlation being low; but from my perspective it simply means “if you try to measure a baby’s mental life, you will get a lot of noise”.
infant cognitive development measures are pretty bad for predicting adult IQ
They are probably also pretty bad for predicting IQ at the age of five years.
(I don’t have evidence for this that I could link; it’s just my understanding of how things work.)
One of the reasons is that in people 3 and more years old, we can distinguish between someone being generally smart/slow vs someone having a specific talent/disorder (e.g. “a genius kid with dyslexia”); but a baby does not have a sufficiently wide range of specialized activities to diagnose this.
Please note that “infant IQ” is a very non-standard use; the article says “ability to process information” instead.
Before three years, things are so difficult to measure that even mental retardation is not diagnosed at that age. I am not surprised by the correlation being low; but from my perspective it simply means “if you try to measure a baby’s mental life, you will get a lot of noise”.
They are probably also pretty bad for predicting IQ at the age of five years.
(I don’t have evidence for this that I could link; it’s just my understanding of how things work.)
One of the reasons is that in people 3 and more years old, we can distinguish between someone being generally smart/slow vs someone having a specific talent/disorder (e.g. “a genius kid with dyslexia”); but a baby does not have a sufficiently wide range of specialized activities to diagnose this.