Policies of the present government impacting negatively on the economy, Dr. Salman Shah said while talking to a private TV channel on Saturday. He said that the greatest problem of the economy was the distrust of the investors. Elaborating, he said that foreign investment during the fiscal year 2007-08 stood at $3 billion, which has gone negative by now. Besides, the hiking prices of crude and food grains were also affecting the whole world.