To provide a selection object decision method allowing a user to easily select and operate an object from among a plurality of objects arranged on a screen.

The selection object decision method decides a selection object from objects displayed on a display device equipped with a display means for displaying a plurality of objects on the screen, a coordinate position detection means for detecting a coordinate position designated by the user on the screen, and a press force detection means for detecting a press force when the user has touched the screen, and has a step of detecting an object arranged on a coordinate detected by the coordinate position detection means, a step (S504) of calculating a threshold by predetermined processing, and a step (S507) of deciding an object selected by the user based on the threshold and a press value detected by the press force detection means.