How Psychopathy Links Alexithymia to Harmful Decisions

Understanding the Link Between Emotional Processing and Moral Decision-Making

Emotional processing plays a critical role in how individuals make moral decisions. A recent study published in Personality and Individual Differences explores how difficulties in identifying and expressing emotions, known as alexithymia, interact with traits associated with psychopathy to influence moral judgments. The research reveals that people who struggle with emotional awareness may be more inclined to support harmful actions if they believe it benefits the greater good.

Alexithymia affects approximately 10% of the population and is characterized by challenges in recognizing and articulating emotions. It includes two dimensions: cognitive, which relates to identifying and discussing emotions, and affective, which involves experiencing them. Two theories attempt to explain this condition—hyper-arousal, where individuals are overwhelmed by intense emotions, and hypo-arousal, where there is a reduced emotional response. Recent evidence supports the hypo-arousal theory, suggesting that those with alexithymia experience lower levels of emotional activation.

Psychopathy, on the other hand, is marked by a lack of empathy, manipulative behavior, and impulsivity. It exists on a spectrum, with some individuals exhibiting traits without meeting clinical criteria. Researchers often differentiate between primary psychopathy, involving callousness and low emotional responsiveness, and secondary psychopathy, linked to impulsivity and aggression.

Previous studies have shown that both alexithymia and psychopathic traits can lead to utilitarian moral decisions, but little was known about their interaction. Serra Şandor from İstanbul Medeniyet University investigated whether psychopathy acts as a bridge between alexithymia and moral reasoning.

Dual-Process Theory and Moral Judgments

According to dual-process theory, moral judgments result from a balance between fast emotional responses and slower, deliberate reasoning. Şandor hypothesized that individuals with blunted emotional reactions might rely more on calculated reasoning, making them more likely to endorse utilitarian outcomes in high-stakes scenarios.

In the first part of the study, 238 university students completed questionnaires measuring alexithymia and psychopathy, along with moral dilemmas. Those with higher alexithymia scores were more likely to make utilitarian choices in personal dilemmas, such as pushing someone off a bridge to save others. This pattern was also observed in those with higher psychopathy scores, particularly primary psychopathy.

A mediation analysis revealed that the relationship between alexithymia and utilitarian choices was fully explained by primary psychopathy. In other words, difficulty recognizing emotions led to traits like low empathy, which in turn predicted utilitarian decisions.

Emotional Arousal and Its Impact

To examine emotional arousal, a second study with 49 participants measured physiological responses to emotional images. High-alexithymia individuals showed less reactivity to both positive and negative stimuli, supporting the hypo-arousal theory. They also made more utilitarian choices and scored higher on psychopathy traits.

Interestingly, lower emotional arousal predicted higher psychopathy in this group, but psychopathy did not directly influence moral decisions as it did for those with better emotional awareness. For individuals with intact emotional processing, psychopathy played a larger role in decision-making.

Implications for Moral Reasoning

The study highlights how different emotional traits interact to shape moral reasoning. Alexithymia increases the likelihood of utilitarian decisions by reducing emotional arousal and fostering psychopathic traits. However, the pathway to these decisions varies based on emotional responsiveness.

These findings support dual-process models, which suggest that emotional reactions typically guide moral choices away from harm. When these reactions are weak, individuals may rely more on abstract reasoning focused on outcomes.

The research also underscores the importance of distinguishing between personal and impersonal moral dilemmas. Emotional factors seem to matter more when harm is direct and personal, aligning with previous studies on brain damage affecting moral decisions.

Limitations and Future Research

The study has limitations, including a sample of university students, which may not represent the general population. It also relied on self-reported questionnaires, which can introduce bias. The cross-sectional design means the results capture a snapshot in time, and longitudinal studies could clarify long-term relationships.

Future research could explore these dynamics in clinical populations or use brain imaging to investigate neural pathways. Understanding how emotional processing influences moral decision-making remains a critical area of inquiry.

The study, titled “From emotional blunting to moral choices: The role of alexithymia in trait psychopathy and utilitarian decision-making,” was published online on March 10, 2025.