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A moderate treatment effect has been shown in several evaluations of general sexual offenders, while many scholars maintain that the question remains unanswered until an adequate number of effectiveness studies with a strong research design have been carried out. In this meta-analysis, we evaluated 14 studies selected and coded according to Collaborative Outcome Data Committee (CODC) criteria. They included 1,421 adult offenders in psychotherapy and 1,509 nontreated controls, with a minimum average follow-up period of 3 years, published in peer-reviewed journals in 1980 or later. Recidivism was defined as rearrest or reconviction. Study quality was classified into strong, good, weak or rejected. The analysis revealed a treatment effect size of r = .03 for nine studies evaluated as Good or Weak, while all studies yielded an effect size of r = .08, including five studies classified as Rejected. The results show that the available research cannot establish any effect of treatment on SOAC. Despite a large amount of research, only a tiny fraction of studies meet a minimum of scientific standards, and even fewer provide sensible and useful data from which it is possible to draw conclusions.<\/jats:p>","DOI":"10.1177\/1524838014526043","type":"journal-article","created":{"date-parts":[[2014,3,13]],"date-time":"2014-03-13T23:40:00Z","timestamp":1394754000000},"page":"280-290","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":46,"title":["Psychological Treatment of Sexual Offenders Against Children"],"prefix":"10.1177","volume":"16","author":[{"given":"Cato","family":"Gr\u00f8nner\u00f8d","sequence":"first","affiliation":[{"name":"University of Oslo, Oslo, Norway"},{"name":"Centre for Research and Education in Forensic Psychiatry, Oslo, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jarna Soilevuo","family":"Gr\u00f8nner\u00f8d","sequence":"additional","affiliation":[{"name":"Centre for Research and Education in Forensic Psychiatry, Oslo, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P\u00e5l","family":"Gr\u00f8ndahl","sequence":"additional","affiliation":[{"name":"Centre for Research and Education in Forensic Psychiatry, Oslo, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2014,3,12]]},"reference":[{"key":"bibr1-1524838014526043","unstructured":"References marked with an asterisk indicate studies that are included in the meta-analysis."},{"key":"bibr2-1524838014526043","doi-asserted-by":"publisher","DOI":"10.1016\/S1359-1789(01)00074-X"},{"key":"bibr3-1524838014526043","doi-asserted-by":"publisher","DOI":"10.1177\/1524838008319633"},{"key":"bibr4-1524838014526043","doi-asserted-by":"publisher","DOI":"10.1177\/107906329901100202"},{"key":"bibr5-1524838014526043","volume-title":"The psychology of criminal conduct","author":"Andrews D. 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