An electro-optical device includes a plurality of scanning lines, a plurality of data lines, a plurality of pixels, a scanning-line driving circuit, a block selecting circuit, a sampling circuit, and a control circuit. The scanning-line driving circuit selects the plurality of scanning lines in a predetermined order in each of a first and second field to which a frame is divided and applies a selection voltage. The block selecting circuit selects the blocks in either a right or left direction in a period during which the scanning line is selected. The sampling circuit samples a data signal corresponding to a gray scale level into each of the columns of data lines belonging to a block selected by the block selecting circuit. The control circuit controls the block selecting circuit to, select the blocks in one of the right direction and the left direction for each field.