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The Roe effect is a hypothesis about the long-term effect of abortion on the political balance of the United States, which suggests that since supporters of abortion rights cause the erosion of their own political base, the practice of abortion will eventually lead to the restriction or illegalization of abortion. It is named after ''Roe v. Wade'', the U.S. Supreme Court case that effectively legalized abortion nationwide in the U.S.〔Muhammad Aurang Zeb Mughal (2010) 'Roe v. Wade'. Brigitte H. Bechtold and Donna Cooper Graves (eds), ''An Encyclopedia of Infanticide''. Lewiston, NY: Edwin Mellen Press, pp. 227-228.〕 Its best-known proponent is James Taranto of the ''Wall Street Journal'' who coined the phrase "Roe effect" in ''Best of the Web Today'', his OpinionJournal.com column. Put simply, this hypothesis holds that: *Those who favor legal abortion are much more likely to get one than those who oppose it. *Children usually follow their parents' political leanings. *Therefore, pro-choice parents will have more abortions and, hence, fewer children. *Therefore, the pro-choice population gradually shrinks in proportion to the pro-life population. *Therefore, support for legal abortions will decline over time. A similar argument suggests that political groups that oppose abortion will tend to have more supporters in the long run than those who support it. In 2005, the ''Wall Street Journal'' published a detailed explanation and statistical evidence that Taranto claims supports his hypothesis.〔("The Roe Effect: The right to abortion has diminished the number of Democratic voters" ) by James Taranto. ''Wall Street Journal'', July 6, 2005〕 Taranto first discussed the concept in January 2003,〔(Sex and the GOP )〕 and named it in December 2003. He later suggested that the Roe effect serves as an explanation for the fact that the fall in teen birthrates is "greatest in liberal states, where pregnant teenagers would be more likely to (abortions ) and thus less likely to carry their babies to term."〔(Babies Having (Fewer) Babies )〕 The ''Journal'' has also published articles about this topic by Larry L. Eastland〔("The Empty Cradle Will Rock" ), June 28, 2004〕 and Arthur C. Brooks.〔("The Fertility Gap" ), August 22, 2006〕 Wellesley College Professor of Economics Phillip Levine, while acknowledging that Taranto's hypothesis cannot be dismissed out of hand, has pointed out several flaws in Taranto's reasoning.〔(Is there any substance to the “Roe effect”? )〕 He writes that the conditions laid out by Taranto make several incorrect assumptions, most notably that pregnancies are events that are completely out of the control of the women. He writes, "If people engage in sexual activity (or not), or choose to use birth control (or not), independent of outside influences, then (and Eastland's ) statistical statements would be valid." ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Roe effect」の詳細全文を読む スポンサード リンク
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