Provided are a control apparatus, a control method, a program, and an information storage medium that are configured, if an execution of processing based on speech recognition is disabled, to make a user recognize that, if recognition of an accepted speech is successful, the execution of processing based on speech recognition is disabled. A speech acceptance block accepts a speech. An execution block executes processing according to a result of recognition of the speech. An output control block executes control so that information indicative that execution of processing based on speech recognition is disabled is outputted. In accordance with success in the recognition of the speech, one of the execution of the processing according to the result of the recognition of the speech and the output control of the information indicative that the execution of processing based on speech recognition is disabled is executed.