Not all people smile the same. In fact, there are those who do not smile even if their most intimate dreams are fulfilled.
But scientists have been unable to agree on whether there is a typical female and typically male type of smile. And, if from that way of smiling, could you identify the sex of a person to whom we cannot see the face.
Now, a team from the University of Bradford has conducted an experiment that clarifies this issue a bit.
The researchers analyzed the different markers that occur on the face (mainly in the area of the eyes, nose and, of course, the lips) during the act of smiling.
And they came to the conclusion that female smiles are, on average, more expansive and open.
The next step of the study was to create software to try to identify the gender of more than a thousand people only through the information that their smiles bring.
And the result was that the system had 85% success. 15% of errors pose, according to the researchers that the smiles are not uniform, and that there are men who can smile in a more feminine way, and women who do it in a more masculine way.
The next phase of the study will be to check how this gender recognition software works, when it comes to the smiles of transgender people, or of others who have undergone several aesthetic interventions on their faces.
