The view of the article below is that they (ie the differences) are at least staying the same, saying that every generation of German Turks is like a first generation of migrants, especially as many Turks seek marriage partners in Turkey. But the rate of cultural change in Germany is different to that in Turkey and especially in rural Turkey, in Anatolia mentioned below, the conservative Muslim heartland of the country, which, if anything, is following the general trend in the Muslim world towards increased religious conservatism. Such a growing rift can only lead to one thing – an eventual split in the very identity of the host nation.

The extracts below are from a lengthy article, “Where Every Generation Is First-Generation”, in the NT Times, exploring some integration issues Germany is having with its huge Turkish population:

Exact statistics are hard to come by, but it is possible that as many as 50 percent of Turks (a word that in common parlance often includes even those with German citizenship) seek their spouses abroad, according to Schäuble, the interior minister. For most of the past decade, according to the ministry, between 21,000 and 27,000 people a year have successfully applied at German consulates in Turkey to form families in Germany. (Just under two-thirds of the newcomers are women.) That means roughly half a million spouses since the mid-1980s, which in turn means hundreds of thousands of new families in which the children’s first language is as likely to be Turkish as German.

Binational marriage alarms many Germans for two reasons. First, it allows the Turkish community to grow fast at a time when support for immigration is low. The Turkish population in Germany multiplies not once in a life cycle but twice — at childbirth and at marriage. Second, such marriages retard assimilation even for those Turks long established in Germany. You frequently hear stories from schoolteachers about a child of guest workers who was a star pupil three decades ago but whose own children, although born in Germany, struggle to learn German in grade school. After half a century of immigration, every new generation of Turks is still, to a large extent, a first generation.

Turkish marriages are seldom Western-style love matches. They are often arranged by parents. A 2003 study by the Federal Ministry of Family found that a quarter of Turkish women in Germany hadn’t even known their partners before they married. The rural Anatolian practice of marrying relatives, usually first cousins, is frequent. It accounts, according to the Center for Turkey Studies at the University of Duisburg-Essen, for between a sixth and a quarter of binational pairings. These marriages bring certain Anatolian problems into the heart of Germany. Domestic violence is high. The causes of wife-beating among families of immigrant background can be debated, but not the numbers. Gulgun Teyhani, who works at a battered-women’s shelter in Duisburg, reckoned that of the 86 women her house took in last year, 60 had a migrant background, and 51 of them spoke Turkish. Last year, the Federal Criminal Investigation Agency found that in the preceding five years, 45 “honor killings” were carried out by Turkish or Kurdish families in Germany against women deemed to have “strayed,” generally by dating Europeans or adopting Western fashions.

[..]
The tragedy of imported brides, Necla Kelek writes, is that they “will live in Germany but never arrive there.” Like Ates, Kelek is a Turkish-German woman with intense passions on either side of the hyphen. [..] It is in large part a result of her books that some Germans who once viewed Turkish marriage practices as none of their business now see it as a pressing crisis.

[..]
Like Ayaan Hirsi Ali in the Netherlands, Kelek has been accused of “Enlightenment fundamentalism,” a tendency to defend secular values too dogmatically. Last year, a group of 60 “migration researchers” wrote an open letter to the weekly paper Die Zeit attacking Kelek’s writing as “unserious” — an odd criticism to level at a memoirist, even one trained in sociology. Others say she has made Islam too central to her explanation of violence against women.

[..] In 2000, the German Youth Institute reported that 53 percent of Turkish women ages 16 to 29 would not consider marrying a German “under any circumstances.”

[..] In North Rhine-Westphalia, Germany’s most populous state and the one where Duisburg is located, 80 percent of Turks ages 25 to 34 are married; their average marriage age is 21 for women and 24 for men. Among non-Turks, only 32 percent of 25- to 34-year-olds are married; the average marriage age is 29 for women and 32 for men. Germans have one of the lowest fertility rates in the history of the world — 1.36 children per woman, according to 2004 figures. While it is hard to find precise figures for Turks in Germany, the rate is widely agreed to be higher.

[..] According to a study done by the Center for Turkey Studies in Essen, young Turkish women and men brought up in Germany view their fellow Turkish-Germans of the opposite sex as “distant from their own culture, or ‘degenerate.’ ”

[..] In the Comenius Garden in Neukolln, a particularly tough part of Berlin, Murat, Ali and Hakan, all in their late teens, were passing a freezing cold afternoon chatting and making up rap verses. Ali, whose family comes from the Black Sea port of Rize, is the son of a local Neukölln imam. He is training to be a plumber but is not employed yet. He is betrothed to a “friend” in Turkey. The person who introduced me to Ali said Ali’s other friends had spoken of the woman as his cousin. So I started by asking him why he had looked for his wife in Turkey. “German girls are Schlampen,” he replied. They’re sluts.

Necla Kelek is great, by the way, have a read of this article on Europe Multiculturalism and integration for a taste.