After the social construct of adolescence was created, adulthood split into two forms: "biological adulthood" and "social adulthood." Thus, there are now two primary forms of adults: biological adults (people who have attained reproductive ability, are fertile, or who evidence secondary sex characteristics) and social adults (people who are recognized by their culture or law as being adults). Depending on the context, "adult" can indicate either definition. Another aspect of adulthood that is relatively new is psychological functioning. According to Jeffrey Arnett, adults can make financial decisions on their own, are financially independent, and are able to make difficult life decisions on their own.