Can expectant mothers use their intuition to find out baby’s gender? According to a study conducted by Dr. Shamas and University of Arizona, mothers guess the correct gender 70% of the time. Not exactly reliable method considering the worst they can do is 50%. Quote:

MOTHER KNOWS BEST: Expectant mothers can use the power of intuition to learn the sex of their unborn babies, says a University of Arizona study. Women who claimed to have an intuition about the gender of their child made the right choice 70% of the time. A survey of college students also found 80% believe their mothers are more intuitive than their fathers.

But it’s not much worse than other gender prediction methods such as Chinese chart or old wife’s tale.

Interesting fact, according to web page hosted by students at Harvard University, one of the sites that’s blocked in Saudi Arabia is online gender predictor. Why? I can only speculate. In some cultures babies of one gender (for example boys) are preferred over the opposite gender.

Interesting research paper, that might not be relevant to baby gender prediction, describes a technique to determine a gender based on the iris (eye) scan.
Vince Thomas, et. al. from University of Notre Dame published a paper Learning to predict gender from iris images:

Employing decision tree learning made it possible to develop
gender classification models that can reach accuracies
close to 80%. This is a notable result as it has previously been
an unchartered territory.

Granted, it’s impossible to scan baby’s iris while in womb, so this method cannot be used by baby gender prediction. Nonetheless, interesting paper.