Previous research has indicated that low levels of IQ in childhood are associated with a shorter life expectancy (i.e. ,higher risk of early death).Which of the following were suggested by Gottfredson and Deary as possible explanations for this relation?
1)Lower IQ in childhood could be due to some already-existing health problems that could mean higher risk of early death
2)Lower IQ in childhood could indicate poor brain functioning,which could mean higher risk of early death
3)Lower IQ in childhood could predict unhealthy behaviors in later life,which could increase the risk of early death
4)Lower IQ in childhood could make one more likely to enter dangerous or stressful occupations,which could increase the risk of early death.

Question

Quizplus · Accepted Answer

Gottfredson and Deary suggested that lower IQ in childhood could be linked to early death through various pathways: existing health problems, poor brain functioning, unhealthy behaviors in later life, and a higher likelihood of entering dangerous or stressful occupations.

Previous Research Has Indicated That Low Levels of IQ in Childhood