HAMBURG, Germany (AFX) - One of Germany's six main economic institutes, the Hamburgischen Welt-Wirtschafts-Archivs (HWWA) has warned the European Central Bank not to rush into cutting interest rates, a HWWA spokesman said, confirming comments made by HWWA chairman Thomas Straubhaar. "Nothing justifies a rushed activism in monetary policy", Straubhaar told a news conference presenting the HWWA's economic forecasts. Last week another of Germany's main economic institutes, the Deutsche Institut fuer Wirtschaftsforschung (DIW) said the ECB had tightened interest rates too aggressively last year in an attempt to combat inflation. Straubhaar added that the euro will reach parity with the dollar before 2002. He said that Germany's GDP should grow by 2.7 pct in 2001 and 2.5 pct in 2002. However he added that these forecasts could be upset by uncertainties like economic developments in the U.S. and the price of oil. "We can say however that the upturn (in Germany) will remain solid", he said. Germany's GDP for this year is due to announced by the federal statistics office on Thursday.