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ERIC Number: EJ212941
Record Type: Journal
Publication Date: 1979-Sep
Pages: N/A
Abstractor: N/A
Reference Count: N/A
Concentrations of Sex Hormones in Umbilical-Cord Blood: Their Relations to Sex and Birth Order of Infants.
Maccoby, Eleanor E.; And Others
Child Development, v50 n3 p632-42 Sep 1979
Results showed that concentrations of testosterone were significantly greater in the umbilical blood of newborn males than females. In both sexes, firstborns had significantly more progesterone and estrogens than later borns, and among males, firstborns had higher concentrations of testosterone. Temporal spacing of childbirths had greater effects on hormone differences among males. (JMB)
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A