The human head is home to all the body’s major sensory organs, and the most important of these is the brain. Although the nose, ears, tongue, nerves, and others parts are important, without a healthy brain, they’d all be useless. Encased in the skull, the brain is the body’s centralized conveyor of all information.

Anatomical terminology A head is the part of an organism which usually includes the ears, brain, forehead, cheeks, chin, eyes, nose, and mouth, each of which aid in various sensory functions such as sight, hearing, smell, and taste, respectively.

Through collected data and reports, it has been determined that the average human head measures 6-7 inches in width and 8-9 inches in length. The average circumference of the human head is 21-23 inches. There are several factors that determine the exact size of each individual’s head.

One of the most “human” traits we have is our giant heads. Our noggins and brains are enormous in relation to our bodies, and this ratio is unmatched amongst other primates. (Humans use 75% less energy walking on two legs, for example, than chimpanzees do.)

Study finds women may be more likely to have fling with wide-headed men. Psychological Science, a journal of the Association for Psychological Science, women may find men with wide heads more appealing for short-term dates and perceive them to be more masculine than men with narrower offerings.

Those with the biggest heads tended to have the highest IQ scores. The researchers found that head growth by age 1 was the key factor. Catch-up growth didn’t matter as much.

Macrocephaly refers to an overly large head. It’s often a symptom of complications or conditions in the brain. There’s a standard used to define macrocephaly: The circumference of a person’s head is more than two standard deviations above average for their age. Or, their head is larger than the 98th percentile.

Causes. Many people with abnormally large heads or large skulls are healthy, but macrocephaly may be pathological. Pathologic macrocephaly may be due to megalencephaly (enlarged brain), hydrocephalus (abnormally increased cerebrospinal fluid), cranial hyperostosis (bone overgrowth), and other conditions.

11 Signs of Intelligence Proving There’s More Than One Way to Be a Genius

• Empathy.
• Solitude.
• Sense of self.
• Curiosity.
• Memory.
• Body memory.
• Adaptability.
• Interpersonal skills.

Most people (about 68 percent) have an IQ between 85 and 115. Only a small fraction of people have a very low IQ (below 70) or a very high IQ (above 130). The average IQ in the United States is 98.