An electronic device with a touch-sensitive surface, a display, and one or more sensors to detect intensity of contacts with the touch-sensitive surface displays a user interface object having a plurality of activation states; detects a contact on the touch-sensitive surface; and detects an increase of intensity of the contact from a first intensity to a second intensity. In response to detecting the increase in intensity, the device: changes activation states M times, and generates a tactile output on the touch-sensitive surface corresponding to each change in activation state. The device detects a decrease of intensity of the contact from the second intensity to the first intensity; and in response to detecting the decrease in intensity, the device: changes activation states N times, and generates a tactile output on the touch-sensitive surface corresponding to each change in activation state, where N is different from M.