Laundry treatment apparatus and method of controlling the same

A method of controlling a laundry treatment apparatus is disclosed. The method includes rotating the drum only in one direction among a clockwise direction and a counterclockwise direction so as to separate water from water contained in the drum, supplying water to the tub, rotating only the agitator to an angle less than 360 degrees so as to disperse laundry in the drum, rotating only the rotator to an angle of 360 degrees or more at a rotational speed that is higher than a rotational speed of the agitator set for the dispersion operation so as to supply water to the chamber, filtering water through the filter, and rotating only the agitator to an angle less than 360 degrees at a rotational speed that is higher than the rotational speed of the agitator set for the dispersion operation but is lower than the rotational speed set for the filtering operation.