ABSTRACT
The relationship between head circumference [HC] and physical growth and mental development has been investigated by many scientists. They studied the circumference of the head of children at different ages and compared it to their physical growth, developmental and intellectual outcome, school achievement, and behavior. Our study was carried out in an Egyptian village. Infants were followed up for HC, weight, and length from birth to six months of age. The infants were also tested for developmental outcome using mental developmental index [MDI] of Bayley scales for Infants Development at the age of six months. Statistical analysis of the data collected showed no association between HC at birth, HC at 6 months of age, or velocity of head growth during the first six months of age and any of MDI, weight, or length at 6 months of age