The study, titled "Deutschland Postmigrantisch", was unveiled on Wednesday by Aydan Oezoguz, a government representative, and the researchers of the Berlin Institute for Empirical Integration and Migration Research. It took a year and a half to complete and involved interviews of over 8,000 people.
The study found that a fifth of respondents harbor negative feelings toward Muslims making demands in Germany, and 27 percent believe Muslims to be more aggressive than ethnic Germans.
Thirty percent believe that Muslims do not put a high priority on education, and many of those asked spoke out against circumcision, teachers wearing headscarves and the building of mosques.
The study revealed many large gaps in the German population's knowledge about and reservations against the Muslim community. Seventy percent of those asked consider the number of Muslims higher than it actually is, with a quarter believing that Muslims make up 21 percent of the country's population.
About four million Muslims live in Germany, many of whom have a German passport, Spiegel said.
