I have just looked up how to use the word ‘aptitude’ correctly in a sentence, as I want to use perfect grammar in a formal letter that I’m writing. This website gives thirty examples, 27 of which are specifically attributed to men, eg. ‘In his childhood he showed a great aptitude for languages; according to his own account he knew Latin, Greek and Hebrew at six years.’, and 3 of which are (relatively!) genderless, eg. ‘Look for declining statesmanship, inferior aptitude, genius dying off.’
http://sentence.yourdictionary.com/aptitude