[Solved] An experimenter finds that a certain male subject always has an increased heartbeat when he sees a picture of a nude female. The experimenter sounds a buzzer and then presents such a picture. The experimenter repeats this procedure until the man responds with an increased heartbeat to the sound of the buzzer alone. In this situation the unconditioned response (UR) is the _______________. A) increased heartbeat B) female's picture C) sounds of the buzzer D) viewing of the picture Active Listening Skills: The ability to fully concentrate, understand, respond, and remember what is being said in conversations. Digital Age: A period in human history characterized by the widespread use of digital technology and the internet. Cell Phone Etiquette: Guidelines and manners for respectful and considerate use of cell phones in public or shared environments. Voice Mail: An electronic system that allows messages to be received and stored for playback by the intended recipient.