资料题：What is the passage mainly about（  ）。

Clothes play a critical part in the conclusions we reach by providing clues to who people are, who they are not, and who they would like to be.They tell u8 a good deal about the wearer's background, personality, status, mood, and social outlook.Since clothes are such an important source of social information, we can use them to manipulate people's impression of us.Our appearance assumes particular significance in the initial phases of interaction that is likely to occur.An elderly middle class man or woman may be alienated by a young adult who is dressed in an unconventional manner, regardless of the person's education, background, or interests.People tend to agree on what certain types of clothes mean.Adolescent girls can easily agree on the lifestyles of girds who wear certain outfits, including the number of boyfriends theylikely have had and whether they smoke or drink.Newscasters, or the announcers who read thenews on TV, are considered to be more convincing, honest, and competent when they are dressed conservatively.And college students who view themselves a taking an active role in theirinterpersonal relationships say they are concerned about the costumes they must wear to play these roles successfully.Moreover, many of us can relate instances in which the clothing we worechanged the way we felt about ourselves and how we acted.Perhaps you have used clothing to gain confidence when you anticipated a stressful situation, such as a job interview or a count appearance.In the workplace, men have long had well defined precedents and role models for achievingsuccess.It has been otherwise for women.A good many women in the business world are uncertain about the appropriate mixture of"masculine"and"feminine"attributes they should convey by their professional clothing.The variety of clothing alternatives to women has also been greater than that available for men.Male administrators tend to judge women more favorably for managerial positions when the women display less feminine" grooming(打扮)shorter hair, moderate use of makeup, and plain tailored clothing.As one male administrator confessed," 'An attractive woman is definitely going to get a longer interview, but she won't get a job."