Rape - False Accusation

False Accusation

Main article: False accusation of rape

The largest and most rigorous study was commissioned by the British Home Office and based on 2,643 sexual assault cases (Kelly, Lovett, and Regan, 2005). Of these, 8% were classified by the police department as false reports. However, the researchers noted that some of these classifications were based simply on the personal judgments of the police investigators and were made in violation of official criteria for establishing a false allegation. Closer analysis of this category applying the Home Office counting rules for establishing a false allegation and excluding cases where the application of the cases where confirmation of the designation was uncertain reduced the percentage of false reports to 3%. The researchers concluded that "one cannot take all police designations at face value" and that "here is an over-estimation of the scale of false allegations by both police officers and prosecutors." Moreover, they added:

The interviews with police officers and complainants’ responses show that despite the focus on victim care, a culture of suspicion remains within the police, even amongst some of those who are specialists in rape investigations. There is also a tendency to conflate false allegations with retractions and withdrawals, as if in all such cases no sexual assault occurred. This reproduces an investigative culture in which elements that might permit a designation of a false complaint are emphasized (later sections reveal how this also feeds into withdrawals and designation of 'insufficient evidence'), at the expense of a careful investigation, in which the evidence collected is evaluated.

Another large-scale study was conducted in Australia, with the 850 rapes reported to the Victoria police between 2000 and 2003 (Heenan & Murray, 2006). Using both quantitative and qualitative methods, the researchers examined 812 cases with sufficient information to make an appropriate determination, and found that 2.1% of these were classified by police as false reports. All of these complainants were then charged or threatened with charges for filing a false police report.

FBI reports consistently put the number of "unfounded" rape accusations around 8%. Two notable examples are Tawana Brawley rape allegations and the Duke lacrosse case. The unfounded rate is higher for forcible rape than for any other Index crime. The average rate of unfounded reports for Index crimes is 2%. However, “unfounded” is not synonymous with false allegation and as Bruce Gross of the Forensic Examiner explains,

This statistic is almost meaningless, as many of the jurisdictions from which the FBI collects data on crime use different definitions of, or criteria for, "unfounded." That is, a report of rape might be classified as unfounded (rather than as forcible rape) if the alleged victim did not try to fight off the suspect, if the alleged perpetrator did not use physical force or a weapon of some sort, if the alleged victim did not sustain any physical injuries, or if the alleged victim and the accused had a prior sexual relationship. Similarly, a report might be deemed unfounded if there is no physical evidence or too many inconsistencies between the accuser's statement and what evidence does exist. As such, although some unfounded cases of rape may be false or fabricated, not all unfounded cases are false. —

It is most commonly reported that around 2% of reported rape cases are false accusations. In an academic review in the Loyola of Los Angeles Law Review, Edward Greer could not find primary sources for this often repeated figure. A 2006 review by Philip Rumney in the Cambridge Law Journal found several that supported that the figure is around 2%, but only one small (545-case) study that could be a source of the 2% figure, and expressed doubt about each's methodology.

Purdue sociologist Eugene Kanin (1994) summarized rape reports in a small Midwestern town between 1978 and 1987 and found that the police department determined 41% of the 109 sexual assault reports to be false. The police department made a "serious offer to polygraph" all rape complainants. David Lisak (2007) argues that Kanin’s is not a research study, because it only puts forth the opinions of the police officers without any further investigation on his part and that it is "a provocative opinion piece, but it is not a scientific study of the issue of false reporting of rape" and that it "certainly should never be used to assert a scientific foundation for the frequency of false allegations." Similarly, John Bancroft states that a search of the literature on false rape reports reveals that Kanin's figure of 41% false rape reports is regarded as unusually high. Kanin claimed that "the complainant must admit that no rape had occurred. She is the sole agent who can say that the rape charge is false." Lisak accused Kanin of presenting the claims of the police department as fact, without investigating further:

"Kanin describes no effort to systemize his own 'evaluation' of the police reports—for example, by listing details or facts that he used to evaluate the criteria used by the police to draw their conclusions. Nor does Kanin describe any effort to compare his evaluation of those reports to that of a second, independent research— providing a ‘reliability’ analysis. This violates a cardinal rule of science, a rule designed to ensure that observations are not simply the reflection of the bias of the observer simply reiterates the opinions of the police officers who concluded that the cases in question were 'false allegations.'"

Lisak later performed his own study, published in 2010 in Violence Against Women, which found a false allegation rate of 5.9%.