Whenever my brother in law calls my sister, her phone has a specific ringtone to it, she does not have strong feelings for the ringtone/song, but her husband loves it. When the song is played on the radio, she doesn’t have any strong reactions to it. The song is a neutral stimulus because it doesn't elicit any strong emotions from her. However, she loves talking to her husband and,every time she talks to him she smiles because she love him so much. Her husband is a Unconditioned stimulus because he elicits an automatic reaction from her. The reaction (smiling) is a unconditioned response. After a lot of phone calls from her husband coupled with a lot times hearing the song as her ringtone, she once again hears the song on the radio.
