Jean Decety

Jean Decety is an American–French neuroscientist specializing in developmental neuroscience, affective neuroscience, and social neuroscience.

His research focuses on the psychological and neurobiological mechanisms underpinning social cognition, particularly social decision-making, empathy, moral reasoning, altruism, pro-social behavior, and more generally interpersonal relationships.

He is Irving B. Harris Distinguished Service Professor at the University of Chicago.

Jean Decety obtained three advanced master's degrees in 1985 (neuroscience), in 1986 (cognitive psychology), and in 1987 (biomedical engineering science) and was awarded a Ph.D. in 1989 (neurobiology - medicine) from the Université Claude Bernard.

After receiving his doctorate, he worked as a post-doctoral fellow at the hospital in Lund (Sweden) in the Department of Neurophysiology, then in the Karolinska Hospital, Stockholm (Sweden) in the Departments of Neurophysiology and Neuroradiology.

He then joined the National Institute for Medical Research (INSERM) in Lyon (France) until 2001.

Decety is currently professor at the University of Chicago and the College, with appointments in the Department of Psychology, and in the Department of Psychiatry and Behavioral Neuroscience.

He is the Director of the Social Cognitive Neuroscience Laboratory, and the Child NeuroSuite.

Decety is a member of the Committee on Computational Neuroscience and the Center for Integrative Neuroscience and Neuroengineering.

In 2022, Decety was elected as a member of the Academia Europaea, a pan-European Academy of Humanities, Letters, Law, and Sciences, in the Physiology and Neuroscience section.

Decety served as the founder and editor-in-chief of the journal Social Neuroscience between 2006 and 2012, and he is on the editorial boards of Development and Psychopathology, The European Journal of Neuroscience, The Scientific World Journal, Frontiers in Emotion Science, and Neuropsychologia.

With his colleague John Cacioppo, Decety played an instrumental role in the creation of the Society for Social Neuroscience in 2010.

Mental simulation, also known as motor imagery, mental practice, or mental rehearsal, refers to the human cognitive ability to imagine doing a specific action or behavior and simulating the probable outcome before acting.

It has been part of elite sports training for a long time.

Olympians use imagery as mental training Research pioneered by Decety using psychophysics, functional neuroimaging, H-reflex excitability, as well as measures of the autonomic nervous system, demonstrated that imagining an action activates similar neural representations that would be engaged by carrying out the same action.

For instance, an increase in heart rate and respiratory rate is proportional to the level of mental effort in athletes who imagine running on a treadmill at different speeds.

Imagining doing an action is associated with activation of the supplementary motor area, parietal cortex, somatosensory cortex, and cerebellum, brain regions involved in motor control.

Together, these findings have been interpreted as a demonstration of functional equivalence between the imagination and the production of action, to the extent that they share the same motor representations underpinned by the same neurophysiological substrate.

This theoretical framework was then extended to empathy and some aspects of social cognition.

Decety studies the neurobiological and psychological mechanisms that guide social decision-making, moral reasoning, empathy and sensitivity for justice, as well as how these abilities develop in children, and are shaped by life experiences and group dynamics.

Decety conducts research on various aspects of empathy, including its evolutionary origins, its development in young children, as well as how empathy is modulated by the social environment and interpersonal relationships.

Decety investigates the development of moral behavior, generosity and distributive justice in children across South East Asia, Europe, the Middle East, North and South America, and South Africa.

He argues that empathy is not necessarily a direct avenue to moral behavior, and that it can lead to immoral behavior.

The influence that empathy and justice exert on one another is complex, and empathy can induce partiality and threaten justice principles.

Based on empirical research combining functional neuroimaging (fMRI and EEG), developmental psychology, and individual differences in personality traits, Decety argues that in order to promote justice, it may be more effective to encourage perspective taking and reasoning than emphasizing emotional sharing with the misfortune of others.

Decety thinks that the ability to recognize and vicariously experience what another individual is undergoing was a key step forward in the evolution of social behavior, and ultimately, morality.

The inability to feel empathy is one of the defining characteristics of psychopathy, and this would appear to lend support to Decety's view.

While empathy plays an important role in motivating caring for others and in guiding moral behavior, Decety's research demonstrates that this is far from being systematic or irrespective to the social identity of the targets, interpersonal relationships, and social context.

He proposes that empathic concern (compassion) has evolved to favor kin and members of one own social group, can bias social decision-making by valuing one single individual over a group of others, and this can frontally conflict with principles of fairness and justice.

Recently, drawing on empirical research in evolutionary theory, developmental psychology, social neuroscience, and psychopathy, Jean Decety argued that empathy and morality are neither systematically opposed to one another, nor inevitably complementary.

A lack of empathy is a hallmark characteristic of psychopathy.

As a consequence, Decety investigates atypical socioemotional processing and moral judgment in forensic psychopaths with a mobile MRI scanner, because they provide a natural model in which emotional and attentional processes are altered, enabling identification of downstream effects, including the extent to which empathy is a critical input for caring.

His work shows that the higher the level of psychopathy, the less neural activity in ventromedial prefrontal cortex in response to perceiving interpersonal harm as well as expressions of physical and emotional pain.

This region is attributed with various functions related to valuation, affect regulation and social cognition.

Decety started a new line of inquiry into characterizing the neural mechanisms of what he calls "the dark side of morality," in particular, the role of moral conviction in justifying violence.

While violence is often described as antithetical to sociality, it can be motivated by moral values with the ultimate goal of regulating social relationships, as shown by the work of Alan Fiske.

In fact, most violence in the world appears to be rooted in conflict between moral values.

To understand how morality emerges from the interaction between innate predispositions, shaped by evolution and input from local cultural environments, Decety conducts empirical research on the development of moral cognition and its relation to prosociality across different countries using behavioral economics games.

A first study combined measures of socioeconomic status (SES), executive functions, affective sharing, empathy, theory of mind, and moral judgment in predicting altruism in children from the age of 5 to 12 in five large‐scale societies: Canada, China, Turkey, South Africa, and the US.

Results demonstrate that age, gender, SES, and cognitive processes (executive function and theory of mind), but not empathy, were the best predictor of children's generosity in a costly resource allocation game.