Acquaintance rape is rape that is perpetrated by a person who knows the victim. Examples of acquaintances include someone the victim is dating, a classmate, co-worker, employer, family member, spouse, counselor, therapist, religious official, or medical doctor. Acquaintance rape includes a subcategory of incidents labeled date rape that involves people who are in romantic or sexual relationships with each other. When a rape is perpetrated by a college student on another student, the term campus rape is sometimes used. Most rapes are perpetrated by a person known to the victim. However, acquaintance rape is less likely to be reported than stranger rape. Thus, crime statistics often underestimate the prevalence of acquaintance rape compared to national surveys. The legal consequences of acquaintance rape are the same as for stranger rape. Origin of the term Studies distinguishing between stranger rape and those by a person known to the victim go back to the 1950s, when a study examining American police rape files from 1958 and 1960 found about half were alleged to have been committed by men who knew their victims. The phrase acquaintance rape was first used in print in 1982 by feminist writer and activist Diana Russell. She used it as an umbrella term to cover all rapes involving people who know one another, in her write-up of a study of 930 women in San Francisco in which she found that 35% reported having experienced rape or attempted rape by an acquaintance, compared with 11% who reported being raped by strangers. In 1988 American feminist writer Robin Warshaw published I Never Called It Rape, the first major book on acquaintance rape. Prevalence Most rape is committed by someone the victim knows. In the United States, the Rape, Abuse & Incest National Network (RAINN) has reported that 45 percent of sexual assaults are committed by an acquaintance and an additional 25 percent by a current or former intimate partner. A 2004–05 study of 30 predominantly European countries by the United Nations Research Institute found about half of rape victims knew their rapists, over a third by name. 17% were a colleague or boss, 16% a close friend, 11% a former partner, and 7% a current partner. In a major 2009 European Commission study of rape cases across Europe, it was found that 67% of rapists were known to the victim, with most being a current or former partner. In Europe, the