One of the more interesting concepts at wikipedia is that of "maturity". It is a term that is often used when describing editors personalities at forums such as the administrator's noticeboard, editor reviews and critically requests for adminship. Oddly, "maturity" on wikipedia does not directly relate to age, an editor who has never revealed his or her age on Wikipedia can be perceived as immature due to his or her actions, whilst another editor who has revealed themselves to be young can have maturity by the bucketload.
Because an editors age is not gathered by wikipedia, it is important to understand why "maturity" is so important and where it shows. Not having this mysterious personality trait of "maturity" is perceived as a negative in fora such as RfA, whilst having "maturity" is perceived as positive.