The Skull Theory

"Such a fun, simple way to get clues of the gender!"
- Happy mama.

What is the Skull theory gender prediction?

As many other bone structures, the skull theory boy and the skull theory girl have certain characteristics that can help gender determination at an early gestational age. Although there isn’t much research on baby skull as it relates to gender determination to back this theory, there is research on the difference in skull structure in children and adults. Using the following markers is thought to be up to 92% accurate at determining gender from 10 weeks of gestation and beyond.

Skull theory examples

Skull theory gender guidelines

For Skull theory gender prediction, Baby Gender Pros uses the following guidelines:

A) The male cranial mass is more blockyand 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 shaped 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 is 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 supercilary arch is large and pronounced in the man.

I) A males gonion (most posterior inferior point on angle of mandible) is more flared out and sharply angled.

J) The teeth of men tend to be larger.

Other gender prediction theories

Between 6 and 10 weeks

This baby gender prediction method uses the location of the placenta in early weeks of pregnancy to predict the gender of the baby. In controlled groups this method has been 97.5% accurate.


From 11 weeks

This early gender prediction theory focuses on the angle on the nub in comparison to the spine. It is sientifically proven and in controlled groups up to 98 to 100% accurate.

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The Skull Theory
Average rating:  
 27 reviews
by Sonya on The Skull Theory
You guessed a boy

I sent my 14 week scan and you said it was a boy by the skull theory, I’ve just had a gender scan at 16 weeks and it’s a BOY!l

by Sophie on The Skull Theory
It said both

I sent my scan of 6 weeks for the Ramzi method which said girl however since then I sent my 12 week scan in for the skull and nub theory which said boy.

by Julia on The Skull Theory
Baby girl

Had a 20 weeks scan today and you were absolutely right I am having a baby girl 🙏❤️Thanks

by Leah on The Skull Theory
They were right

Sent in a 12w ultrasound pic they guessed a girl a week later the dr confirmed

by Happy Mommy on The Skull Theory

Submitted my 12wk ultrasound. Skull theory was correct

by Bea on The Skull Theory

Gender pros said it was a boy but we are blessed with a baby boyl did the maternity 21 blood work said it’s a boy

by Kayla on The Skull Theory

Loved this. I’m still shook that it’s correct, thank you!

by Gunner on The Skull Theory
Ramzi boy

My wife is happy so thank you

by Vic on The Skull Theory
Skull girl

Bummed the nub wasn’t visible but the skull still said girl and it’s correct.

by Tessa on The Skull Theory

I never thought you’d guess right at 6 weeks. Good job

by Hailey on The Skull Theory

Our twin boys are confirmed! Thank you for letting us get mentally prepared! Great service!

by Julia on The Skull Theory
Ramzi girl

So thrilled for our girl. You were right

by Monica on The Skull Theory

I loved this. It helped me bind with baby until our 20 week ultrasound.
Thank you!

by Lisa on The Skull Theory

I keep reading it’s 50/50 chance that you are right but you’ve been 100% right with all 4 of my kids so I call Bs! Lol

by Carla on The Skull Theory

Gifted to my sister and you were right. I’m having a niece

by Ebbie on The Skull Theory

He is definitely a boy. Thanks.👌

by B.R on The Skull Theory

We’re having a baby boy! After 3 girls, and our last baby is a boy. Personally didn’t think I could have boys so this was you were right. Thanks I am so happy.

by Jackie on The Skull Theory
Over the moon

I has a questionable potty shot, and a super girly nub.
18 weeks and confirmed it’s a little girl. Omg you were right. Thanks.

by Kat on The Skull Theory
You were right

The blue team won!!! Thank U

by lossy on The Skull Theory

It was fun. I have printed and framed the prediction and it's in her nursery.
Thank you.
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