Prior studies have shown that adolescents use condoms significantly more often with casual partners (anyone you have sex with, but do not consider to be a main partner) than with main partners (someone you are serious about). Condom use, a primary method of sexual safety, has been associated with a variety of individual characteristics and attitudes, such as self-efficacy, personal beliefs, and perception of peer norms. There are also other motivations and attitudes that may shape condom use. For example, how adolescents define their partners (i.e. 'main' versus 'casual') may play a crucial role in determining their use of condoms.