Caspar, E. A., et al. (2025).
Cerebral Cortex, 35(3).
Abstract
The sense of agency, the feeling of being the author of one’s actions and outcomes, is critical for decision-making. While prior research has explored its neural correlates, most studies have focused on neutral tasks, overlooking moral decision-making. In addition, previous studies mainly used convenience samples, ignoring that some social environments may influence how authorship in moral decision-making is processed. This study investigated the neural correlates of sense of agency in civilians and military officer cadets, examining free and coerced choices in both agent and commander roles. Using a functional magnetic resonance imaging paradigm where participants could either freely choose or follow orders to inflict a mild shock on a victim, we assessed sense of agency through temporal binding—a temporal distortion between voluntary and less voluntary decisions. Our findings suggested that sense of agency is reduced when following orders compared to acting freely in both roles. Several brain regions correlated with temporal binding, notably the occipital lobe, superior/middle/inferior frontal gyrus, precuneus, and lateral occipital cortex. Importantly, no differences emerged between military and civilians at corrected thresholds, suggesting that daily environments have minimal influence on the neural basis of moral decision-making, enhancing the generalizability of the findings.
Here are some thoughts:
The study found that when individuals obeyed direct orders to perform a morally questionable act—such as delivering an electric shock—they experienced a significantly diminished sense of agency, or personal responsibility, for that action. This diminished agency was measured using the temporal binding effect, which was weaker under coercion compared to when participants freely chose their actions. Neuroimaging revealed that obedience was associated with reduced activation in brain regions involved in self-referential processing and moral reasoning, such as the frontal gyrus, occipital lobe, and precuneus. Interestingly, this effect was observed equally among civilian participants and military officer cadets, suggesting that professional training in hierarchical settings does not necessarily protect against the psychological distancing that comes with obeying authority.
These findings are significant because they offer neuroscientific support for classic social psychology theories—like those stemming from Milgram’s obedience experiments—that suggest authority can reduce individual accountability. By identifying the neural mechanisms underlying diminished moral responsibility under orders, the study raises important ethical questions about how institutional hierarchies might inadvertently suppress personal agency. This has real-world implications for contexts such as the military, law enforcement, and corporate structures, where individuals may feel less morally accountable when acting under command. Understanding these dynamics can inform training, policy, and ethical guidelines to preserve a sense of responsibility even in structured power systems.
