Answer the question at the end by quoting:

Henry Havelock Ellis, known as Havelock Ellis (2 February 1859 - 8 July 1939), was an English physician, writer, progressive intellectual and social reformer who studied human sexuality. He co-authored the first medical textbook in English on homosexuality in 1897, and also published works on a variety of sexual practices and inclinations, as well as on transgender psychology. He is credited with introducing the notions of narcissism and autoeroticism, later adopted by psychoanalysis. Ellis was among the pioneering investigators of psychedelic drugs and the author of one of the first written reports to the public about an experience with mescaline, which he conducted on himself in 1896.
Dr. Havelock Ellis' 1933 book, Psychology of Sex, is one of the many manifestations of his interest in human sexuality. In this book, he goes into vivid detail of how children can experience sexuality differently in terms of time and intensity. He mentions that it was previously believed that, in childhood, humans had no sex impulse at all. "If it is possible to maintain that the sex impulse has no normal existence in early life, then every manifestation of it at that period must be 'perverse,'" he adds. He continues by stating that, even in the early development and lower function levels of the genitalia, there is a wide range of variation in terms of sexual stimulation. He claims that the ability of some infants producing genital reactions, seen as "reflex signs of irritation" are typically not vividly remembered. Since the details of these manifestations are not remembered, there is no possible way to determine them as pleasurable. However, Ellis claims that many people of both sexes can recall having agreeable sensations with the genitalia as a child. "They are not (as is sometimes imagined) repressed." They are, however, not usually mentioned to adults. Ellis argues that they typically stand out and are remembered for the sole contrast of the intense encounter to any other ordinary experience.  Ellis claims that sexual self-excitement is known to happen at an early age. He references authors like Marc, Fonssagrives, and Perez in France who published their findings in the nineteenth century. These early ages are not strictly limited to ages close to puberty as can be seen in their findings. These authors provide cases for children of both sexes who have masturbated from the age of three or four. Ellis references Robie's findings that boys' first sex feelings appear between the ages of five and fourteen. For girls, this age ranges from eight to nineteen. For both sexes, these first sexual experiences arise more frequently during the later years as opposed to the earlier years. Ellis then references Hamilton's studies that found twenty percent of males and fourteen percent of females have pleasurable experiences with their sex organs before the age of six. This is only supplemented by Ellis' reference to Katharine Davis' studies, which found that twenty to twenty-nine percent of boys and forty-nine to fifty-one percent were masturbating by the age of eleven. However, in the next three years after, boys' percentages exceeded that of girls.  Dr. Ellis also contributed to the idea of varying levels of sexual excitation. He asserts it is a mistake to assume all children experience are able to experience genital arousal or pleasurable erotic sensations. He proposes cases where an innocent child is led to believe that stimulation of the genitalia will result in a pleasurable erection. Some of these children may fail and not be able to experience this either pleasure or an erection until puberty. Ellis concludes, then, that children are capable of a "wide range of genital and sexual aptitude." Ellis even considers ancestry as contributions to different sexual excitation levels, stating that children of "more unsound heredity" and/or hypersexual parents are "more precociously excitable."

Are there other studies that agree?

Katharine Davis' studies, which found that twenty to twenty-nine percent of boys and forty-nine to fifty-one percent were masturbating by the age of eleven.



Answer the question at the end by quoting:

Ministry is an American industrial metal band, founded in 1981 by Al Jourgensen in Chicago, Illinois. Originally a synth-pop outfit, Ministry shifted its style to become one of the pioneers of industrial metal in the mid-to-late 1980s. The band's lineup has gone through many changes throughout its history, with Jourgensen remaining the only constant as the band's main producer, singer, songwriter, and instrumentalist. Notable musicians who have contributed to the band's studio or live activities include Paul Barker, Martin Atkins, Bill Rieflin, Chris Connelly, Nivek Ogre, Mike Scaccia, Rey Washam, Paul Raven, Tommy Victor, Jason Christopher, Tony Campos, Burton C. Bell and DJ Swamp.
The follow-up, The Mind Is a Terrible Thing to Taste was supported by a tour from 1989 to 1990. Due to the complex nature of the album's drumming, a second drummer, Martin Atkins (formerly of Public Image Ltd. and Killing Joke), was used. In addition to Atkins, a ten piece touring line-up was formed, consisting of Chris Connelly (keyboards and vocals), Skinny Puppy vocalist Nivek Ogre (vocals and keyboards), Joe Kelly (vocals and backing vocals) and guitarists Mike Scaccia, Terry Roberts, and William Tucker, with Jourgensen, Barker and Rieflin serving as the group's core members. This tour was documented on In Case You Didn't Feel Like Showing Up. Two singles, "Burning Inside" (for which a video was made) and "So What" were released from the album.  Throughout the late 1980s Jourgensen and Barker expanded their ideas beyond Ministry into a seemingly endless parade of side projects and collaborations. Many of these bore Ministry's signature sound and the duo's "Hypo Luxa/Hermes Pan" production imprint. Foremost of these was Ministry's alter ego, the Revolting Cocks. "RevCo", as it is often referred to, essentially became the same band as it had originally featured Belgian musicians Richard 23 (of Front 242) and Luc Van Acker. Jourgensen and Barker also formed Lard with Dead Kennedys lead singer Jello Biafra, Acid Horse with Cabaret Voltaire, 1000 Homo DJs (which featured Nine Inch Nails' Trent Reznor doing vocals on a cover of Black Sabbath's "Supernaut"), PTP with Chris Connelly and Pailhead with Ian MacKaye of Minor Threat and Fugazi.  Barker released his own material as Lead into Gold and Jourgensen produced and played electric guitar on the Skinny Puppy 1989 album Rabies. Atkins and Rieflin also formed the band Pigface, which featured Barker on several tracks, as well. The smaller of these projects were later collected on the CD Side Trax (Rykodisc Records, 2004), and the RevCo discography was remastered and reissued.

Where did the band tour?