A management method manages devices in a home includes, receiving operation information on one of the devices when an operation is performed for the one of the devices, specifying times at which the operation was performed, in accordance with the information, and receiving, whenever a state is entered when no one is expected to be home, time information when the state has been entered. Specifying in-home-absence times at which a state has been entered when no one is expected to be home, according to the time information, for each of the devices, calculating time differences for the specified operation times, and for each of the devices, specifying the performed operation as a first behavior of the person correlated to a behavior before the person leaves home, when variation of the calculated time differences of the corresponding one of the devices is equal to or lower than a threshold.