Classical Conditioning: The Song that turned into a Cue to my Sorrow

Classical conditioning refers to an essential associative learning process whereby a hitherto neutral stimulus develops the ability to induce a response after it is repeatedly paired with an unconditioned stimulus. This process has been personally experienced by me, and thus has given me a clear, clear-cut understanding of the strength and permanence of such conditioned associations. After the end of a valuable romantic relationship, a song that I used to listen to with my ex-partner became a painful affective stimulus, which could cause me to feel sad and grieved even after the relationship itself ended (Sanvictores et al., 2024). This autobiographical example is an illustration of all the components of Pavlovian conditioning and shows the depth with which conditioning transforms ordinary emotional experience.

Unconditioned Stimulus (US) Identification

The unconditioned stimulus in my case is the romantic breakup that I experienced, the acute emotional pain, loss, and grief of the sudden termination of a significant relationship. This US consistently and independently elicits a strong affective response in me without being conditioned to do so because humans are evolutionarily programmed to react to social loss and disturbances in attachment relationships. Empirical research has established that events that involve a great deal of emotional or social pain are strong unconditioned stimulus in human associative learning that triggers neurobiological threat-response systems that are associated with survival (Carter, 2025). This US was strong enough to be rapidly conditioned, even by a single emotionally charged association.

Unconditioned Response (UR) Identification

My unconditioned reaction to the breakup included severe sadness, uncontrolled crying, tightness in the chest, and autonomic symptoms of tachycardia and dyspnea. These reactions were all reflexive, motivated by physiological and neural processes of dealing with social loss and interpersonal rejection that were innate. It has been shown that these visceral and affective responses are reliable and valid URs in human populations in the face of severe interpersonal loss (Michaud & Bouton, 2024). The reflexive, automatic nature of the UR provided the conditions that were requisite to grief-based conditioning to quickly and consistently emerge in my experience.

Recognition of the Neutral Stimulus (NS) Which Transformed into the Conditioned Stimulus (CS)

The first stimulus that was neutral was a specific song that my partner and I listened to repeatedly during our relationship, during the first date, during long drives, and during the night when the relationship ended. Before these recurring associations, the song had no emotional meaning to me; it was merely a piece of music that I liked, without any negative or sadness-related qualities. Nevertheless, over time as the song became associated with emotionally meaningful shared experiences, particularly its presence in the breakup itself, it came to be a conditioned stimulus that could elicit distress on its own (Carter, 2025). The idea that personally meaningful stimuli are particularly effective neutral stimuli is supported by research on auditory and emotional associative learning because of the salience inherent in these stimuli and the lack of pre-existing strong associations.

Conditioned Response (CR) Identification

Therefore, whenever I hear that song, either by accident in a cafe or on the radio or in the playlist of another person, I instantly feel anticipatory sadness, longing, and tears regardless of how long it has been since the end of the relationship. This conditioned reaction is very similar to the grieving that I experienced at the time of the break up, but it is triggered solely by the auditory stimulus without the presence of my ex-girlfriend or any other contextual stimulus. Empirical studies have shown that conditioned emotional reactions of this kind could be exceptionally long-lasting and could be extended to similar stimuli, including songs with similar sonic qualities, tempo, or mood (Michaud and Bouton, 2024). My experience explains the adaptive usefulness of emotional memory as well as the possibility of conditioning to be disruptive in case CRs encroach on daily mood and functioning.

Account of the Conditioning Process

Conditioning was initiated in the course of the relationship itself since I heard the song (NS) many times during the emotionally charged moments of intimacy and connection with my partner. At the time of the breakup (US), with its ensuing sadness and grief (UR), the song re-emerged, and it became firmly linked to emotional pain, which was at the peak of my distress. Since that point, the song became a conditioned stimulus (CS), which consistently caused the conditioned response (CR) of grief and longing despite the situations that had nothing to do with the relationship (Carter, 2025). This acquisition stage therefore demonstrates the ability of classical conditioning to encode emotionally salient memories by using temporal pairing alone.

Considering the emotional nature of the breakup, conditioning was observed to be mainly in the form of single-trial learning whereby one strong pairing was enough to form a permanent association. I tried to extinguish by exposing myself to the song in neutral and safe conditions; the CR subsided with time but I later noticed spontaneous recovery; a re-emergence of the conditioned grief response after a period of seeming remission. This is supported by reinstatement research, which demonstrates that a CR can be re-instigated by re-exposure to grief-related stimuli even after extinction seems to have occurred, particularly when initial conditioning was done under high emotional arousal (Michaud and Bouton, 2024). These concepts have provided me with a personal understanding and a better appreciation of how classical conditioning can be used clinically to help people with grief, anxiety, and mood-related disorders (Beckers et al., 2023). This has made me understand these mechanisms in the behavioral analytic framework.

References

Beckers, T., Hermans, D., Lange, I., Luyten, L., Scheveneels, S., & Vervliet, B. (2023). Understanding clinical fear and anxiety through the lens of human fear conditioning. Nature Reviews Psychology, 2(4), 233-245. https://www.nature.com/articles/s44159-023-00156-1

Carter, M. E. (2025). Associative learning: A mechanism for conditioned taste aversion. Current Biology, 35(8), R300-R302. https://www.cell.com/current-biology/abstract/S0960-9822(24)01714-7

Michaud, N. L., & Bouton, M. E. (2024). An analysis of reinstatement after extinction of a conditioned taste aversion. Journal of Experimental Psychology: Animal Learning and Cognition, 50(2), 144. https://psycnet.apa.org/buy/2024-72708-003

Sanvictores, T., Mahabadi, N., & Rehman, C. I. (2024). Classical Conditioning. In StatPearls [Internet]. StatPearls Publishing. https://www.ncbi.nlm.nih.gov/sites/books/NBK470326/