THE SKULL THEORY
WHAT IS THE SKULL THEORY?
The skull theory uses the ultrasound picture of your baby to determine the gender. The idea is that the shape of the baby's skull can predict whether it will be a boy or girl. For example, the top of the head for a girl is rounder and tapers at the top whilst if it is a boy the top of the head is likely to be more blocky and big.
UNDERSTANDING THE THEORY
As fun as the guessing game might be, skull theory is for entertainment value only. There's no way to judge the sex of a fetus from the shape of a skull on a grainy ultrasound image. There is no scientific basis in the skull theory; experts say that male and female skulls don't have any distinct features until they reach the age of maturity and there are other factors such as ethnicity which also apply.
DIFFERENCE BETWEEN MALES AND FEMALES?
There is definitely a a difference between male and females skull shapes, however these differences are only seen in ADULTS or MONKEY'S. We know baby's move constantly in the womb and therefore can show their skull shape to look differently. One move and they look like they have boy skull shape the next they appear as if they have a girl skull shape.
Example below of the same baby showing different skull shapes.
JUST FOR FUN?
Skull theory should definitely only be used for FUN and not taken as gospel. There really is no scientific evidence to back this.
Nub Theory is the only reliable way for gender determination.
Most important skull differences between men and women are indicated by the letter value on the figure to the left and described below:
To determine gender, use the following criteria:
(A)The male cranial mass is blockier and more massive compared to the females, which is rounder and tapers at the top.
(B)Temporal Ridge – this runs along the outer side of the upper skull creating the square shape of the upper head. More prominent in men than women.
(C) A woman’s supraorbital margin (the ridge above the eyes) is sharper, while the males are round and dull.
(D) The Zygomatic bone (the cheekbone that lies under the lower eye ridge) is more pronounced on the male skull.
(E) The Mandible (lower jaw) bone of a woman is rounded, while the male’s is squared.
(F) Frontal bone forehead structure terminates at the brow. The male forehead is lower and more sloping.
(G) Men have a deeper cranial mass.
(H)The superciliary arch is large and pronounced in the man.
(I) A males gonion (the most posterior inferior point on the angle of mandible) is more flared out and sharply angled.
(J)The teeth of men tend to be larger.