Joining a group is determined by a number of different factors, including an individual's personal traits; gender; social motives such as need for affiliation, need for power, and need for intimacy; attachment style; and prior group experiences. Groups can offer some advantages to its members that would not be possible if an individual decided to remain alone, including gaining social support in the forms of emotional support, instrumental support, and informational support. It also offers friendship, potential new interests, learning new skills, and enhancing self esteem. However, joining a group may also cost an individual time, effort, and personal resources as they may conform to social pressures and strive to reap the benefits that may be offered by the group.