4. Ovulation

Can a woman’s personality change at certain times of the month? Studies show that hormones can influence a woman’s taste in men. When a woman ovulates, in other words, when she is at her most fertile, she will often pursue men with very masculine features.

For instance, a squarer jaw, heavy-set, muscular, stubble on the face and a hairy body. As well as physical attributes these men will also show dominant features such as a deep voice and aggressive behaviour. She will also change her appearance and how she acts.

For example, she’ll wear more sexually exposing clothes, more seductive makeup, she’ll even change the way she walks and talks. Evolutionary psychologists believe this is all a subconscious change to nab the most suitable male partner to father her offspring.

“The idea is that women turn up everything that has to do with femininity” at ovulation, said Greg Bryant, an evolutionary psychologist at the University of California, Los Angeles. “This is showing that there are all sorts of phenomena that happen in our behaviour that we’re not actually aware of.”

Ovulating women sway their hips more when they walk, they are also more likely to attend social gatherings. Ovulation even affects the pitch of a woman’s voice. It is highest of the day of an egg’s release.

Studies are yet to prove whether a woman’s high pitch voice is more attractive to men. Studies do show, however, that woman during this time exhibit more sexually risky behaviour. Don’t worry though ladies, it all returns to normal after ovulation.

5. Brain Injury

There are lots of studies that document personality change after a brain injury.

Probably the most famous was that of Phineas Gage who suffered a frontal lobe injury whilst working. Before the accident, Gage was ‘a hardworking, pleasant man’. However, after the injury, his behaviour changed abruptly. Gage became drunk and aggressive and could no longer hold down a job.

But suffering a brain injury doesn’t always mean a personality change for the worse. Take ‘Patient 3534’. This 70-year-old woman had surgery to remove a brain tumour. She suffered massive brain damage to the frontal lobe area. Before the surgery, her husband described her as having a ‘stern’ personality. She was always grumpy and easily irritated. Afterwards, he said she was “happier, more outgoing, and more talkative than ever before”.

Another example, ‘Patient 2410’, is a 30-year-old man who experienced trauma to the frontal lobe. He underwent surgery after suffering a brain aneurysm. He and his wife described him as aggressive, short-tempered and ‘mopey’ before the surgery. Afterwards, however, he is “more passive and easy going” and laughs and jokes around a lot.

So how come some people change for the better and others for the worse? Brain scans showed that those who had undergone improvements in their personalities had experienced damage in the forefront of the brain. This area is the bilateral frontal polar region. It is responsible for decision-making and understanding other people’s perspective.

We can see that from the evidence it is clear that personalities are not fixed after a certain point in our lives. Not only that but there are many factors that can cause a personality change.

References:

  1. www.medicaldaily.com
  2. www.stir.ac.uk
  3. www.bbc.com
  4. www.nbcnews.com
  5. www.bbc.com
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