A wearable article useful for facilitating toilet training. The array of electrodes includes multiple sense electrodes and a current electrode. The display also includes a controller configured to convert an image signal to 2D image data for the pixels at each of N\xd7k sub-fields in the 2D display mode and convert the image signal to stereoscopic image data for the pixels at each of N sub-fields in the stereoscopic display mode, where N and k are integers greater than 1. The light-emitting element is arranged so that the emission of the light-emitting substance covers at least two wavelengths \u03bb and an optical path length L between the reflective surface and the semi-reflective surface satisfies an equation L=n\u03bb2 where n is an integer greater than or equal to 2. The first mode or the second mode is shifted to the third mode when a lighting rate is a predetermined value or less and a gradation of image is a predetermined value or more of each subfield. For the purpose of improving the adaptability of the connection device to different functions andor current supplies andor installation situations, there is also displaceably arranged in the second row a contact position selection device for moving at least one of the contact elements arranged in this second row between two contact positions neighboring one another.