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Ever wondered how intelligence was measured by our ancestors? Ancient Greeks' views and the journey from phrenology to IQ tests shaped our understanding.

Declan’s IQ was determined to be 137, which is in the 99th percentile. That score led the kindergartner to be accepted into Mensa.

Declan Lopez’s IQ was determined to be 137, which is in the 99th percentile. That score led the kindergartner to be accepted into Mensa, a society for people with high intelligence quotients.

Declan Lopez’s IQ was determined to be 137, which is in the 99th percentile. That score led the kindergartner to be accepted into Mensa, a society for people with high intelligence quotients.

By Rikki Klaus, CNN

Maternal-fetal listeriosis is a severe disease that can lead to miscarriage, premature birth or serious neonatal infection.

Children born at 24- through 34-weeks’ gestation could have neurobehavioral problems and developmental dysfunctions, including language, executive function, attention, and behavioral disorders.

Early mental health experiences of parents after the birth of a very preterm infant may have effects on parenting behaviors and child development.

Early mental health experiences of parents after the birth of a very preterm infant may have effects on parenting behaviors and child development.

This study examines the association between fluoride exposure during pregnancy and IQ scores in a prospective birth cohort.