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Marc Lewis was born on 1951, is a Canadian psychology professor and author. Discover Marc Lewis's Biography, Age, Height, Physical Stats, Dating/Affairs, Family and career updates. Learn How rich is he in this year and how he spends money? Also learn how he earned most of networth at the age of 73 years old?

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1951

Marc Lewis (born 1951) is a Canadian clinical psychologist, neuroscientist, academic, and author from Toronto, Ontario.

Lewis was born in 1951 and grew up in the York Mills neighborhood of Toronto in a middle-class Jewish family; his father was a doctor.

He has a brother, Michael.

1970

His parents divorced in 1970.

As a teenager, he attended Tabor Academy, a preparatory school in Massachusetts, but did not have a good experience there, becoming depressed and beginning his experimentation with drugs.

By age 17, as a university student, he had begun using heroin.

1975

After earning a bachelor's degree in music from University of California—Berkeley in 1975, Lewis traveled for two years in Asia, including Malaysia, Thailand, Laos, Burma, and a nine-month stint studying the sitar in India.

There, his addiction came to include opium.

Through his 20s, Lewis used a variety of substances including marijuana, cocaine, LSD, heroin, PCP, and methamphetamine.

Spiraling out of control, he lost his job and first marriage, and was expelled from graduate school.

He began stealing drugs from labs and medical centers in Ontario, for which he was convicted and sentenced to probation.

This experience led him to fight and eventually overcome his addiction.

Lewis returned to graduate school at the University of Toronto, where he studied cognitive and emotional development, developmental (cognitive) neuroscience, as well as child-clinical psychology, as well as the neuroscience of addiction.

1986

He earned a master's degree in applied psychology in 1986, and a Ph.D. in 1989.

His thesis supervisor was Robbie Case, a professor of developmental psychology.

He has called himself a "direct descendant" intellectually from Swiss psychologist Jean Piaget, whose work was a strong influence on both Case and Lewis.

1988

• Case, R., Hayward, S., Lewis, M.D., & Hurst, P., "Toward a neo-Piagetian theory of cognitive and emotional development", Developmental Review, 1988

• Lewis, M.D., "Biography of the first year: A case study integrating psychoanalytic, cognitive-developmental and mother-infant systems perspectives", Early Child Development and Care, 1988

1989

He was a professor at the University of Toronto from 1989 to 2010 and Radboud University Nijmegen in Nijmegen, the Netherlands from 2010 to 2016.

He is particularly focused on the study of addiction.

His work is informed by his own experience of drug addiction, and is notable for its focus on neuroscience and the changes addiction causes in the brain.

His books include Memoirs of an Addicted Brain and The Biology of Desire, which Damian Thompson of The Spectator called "the most important study of addiction to be published for many years."

He has argued that the standard view of addiction as a disease is misleading and even potentially harmful, suggesting instead that it is best viewed as a process of "deep learning."

This has been controversial.

He has also written or co-written more than 75 journal articles and chapters on developmental psychology, neuroscience, addiction and related topics.

Lewis became an associate professor at the University of Toronto shortly after completing his Ph.D. in 1989, and became a full professor in 2000.

• Lewis, M.D., "Early infant-mother interaction as a predictor of problem solving in toddlers", International Journal of Early Childhood, 1989

1992

• Lewis, M.D., & Ash, A.J., "Evidence for a neo-Piagetian stage transition in early cognitive development", International Journal of Behavioral Development, 1992

1993

• Lewis, M.D., "Early socioemotional predictors of cognitive competency at four years", Developmental Psychology, 1993

• Lewis, M.D., "A neo-Piagetian interpretation of Melanie Klein's theory of infancy", Psychoanalysis and Contemporary Thought, 1993

• Lewis, M.D., "Emotion-cognition interactions in early infant development", Cognition and Emotion, 1993

1994

• Lewis, M.D., "Reconciling stage and specificity in neo-Piagetian theory: Self-organizing conceptual structures", Human Development, 1994

1995

• Lewis, M.D., "Cognition-emotion feedback and the self-organization of developmental paths", Human Development, 1995

1996

• Lewis, M.D., "Self-organising cognitive appraisals", Cognition and Emotion, 1996

1997

• Lewis, M.D., Koroshegyi, C., Douglas, L., & Kampe, K., "Age-specific associations between emotional responses to separation and cognitive performance in infancy", Developmental Psychology, 1997

• Lewis, M.D., & Junyk, N., "The Self-organization of Psychological Defenses", in The Psychological Meaning of Chaos: Translating Theory Into Practice (American Psychological Association, 1997)

• Lewis, M.D., "Personality Self-organization: Cascading Constraints on Cognition-emotion Interaction", in Dynamics and Indeterminism in Developmental and Social Processes (Erlbaum, 1997)

1998

(Plenum, 1998)

1999

• Lewis, M.D., Lamey, A.V., & Douglas, L., "A new dynamic systems method for the analysis of early socioemotional development", Developmental Science, 1999

• Lewis, M.D., & Granic, I., "Who put the self in self-organization? A clarification of terms and concepts for developmental psychopathology", Development and Psychopathology, 1999

• Lewis, M.D. "A Dynamic Systems Approach to Measuring Behavioural Flexibility in Early Personality Development", in The Strengths of Children: Education Between Risk and Resilience (Ernst-Reinhardt-Verlag, 1999)

• Lewis, M.D., & Granic, I., "Self-organization of Cognition-emotion Interactions", in Handbook of Cognition and Emotion (Wiley, 1999)

• Lewis, M.D., & Douglas, L., "A Dynamic Systems Approach to Cognition-emotion Interactions in Development", in What Develops in Emotional Development?

2000

• Lewis, M.D., "The promise of dynamic systems approaches for an integrated account of human development", Child Development, 2000

• Lewis, M.D. "Self-organizing brains don't develop gradually", Behavioral and Brain Sciences, 2000

• Ramsay, J.T., & Lewis, M.D. "Causal status of emotions in consciousness", Behavioral and Brain Sciences, 2000

• Lewis, M., "Brain Change in Addiction: Disease or Learning? Implications for Science, Policy, and Care", in Evaluating the Brain Disease Model of Addiction (Routledge, 202)

• Lewis, M.D., "Emotional Self-organization at Three Time Scales"and "A New Approach to the Study of Emotional Development", in Emotion, Development, and Self-organization: Dynamic Systems Approaches to Emotional Development (Cambridge University Press, 2000)

2001

• Lewis, M.D., & Ferrari, M. "Cognitive-emotional Self-organization in Personality Development and Personal Identity", in Identity and Emotions: A Self-organizational Perspective (Cambridge University Press, 2001)

• Lewis, M.D., "Personal Pathways in the Development of Appraisal: A Complex Systems/stage Theory Perspective", in Appraisal Processes in Emotion (Oxford University Press, 2001)

2002

He and Granic also co-edited the 2002 book Emotion, Development, and Self-Organization: Dynamic Systems Approaches to Emotional Development, part of the series Cambridge Studies in Social and Emotional Development.

Lewis is author or co-author of more than 75 journal articles on developmental psychology, neuroscience, addiction and related topics.

Beyond his academic writing, Lewis has written frequently for the mainstream news media on the topic of addiction.

• Lewis, M.D., "The dialogical brain: Contributions of emotional neurobiology to understanding the dialogical self", Theory and Psychology, 2002

• Lewis, M.D., "Interacting Time Scales in Personality (and Cognitive) Development: Intentions, Emotions, and Emergent Forms", in Microdevelopment: Transition Processes in Development and Learning (Cambridge University Press, 2002)

2004

• Lewis, M.D., "Trouble ahead: Predicting antisocial trajectories with dynamic systems concepts and methods", Journal of Abnormal Child Psychology, 2004

• Lewis, M.D., & Stieben, J., "Emotion regulation in the brain: Conceptual issues and directions for developmental research", Child Development, 2004

• Evans, D.W., Lewis, M.D., & Iobst, E., "The role of the orbitofrontal cortex in normally developing compulsive behaviors and obsessive-compulsive disorder", Brain and Cognition, 2004

• Lewis, M.D., Zimmerman, S., Hollenstein, T., & Lamey, A.V., "Reorganization of coping behavior at 1 1/2 years: Dynamic systems and normative change", Developmental Science, 2004

• Lewis, M.D., & Todd, R., "Toward a Neuropsychological Model of Internal Dialogue: Implications for Theory and Clinical Practice", in The Dialogical Self in Psychotherapy (Brunner-Routledge, 2004)

2005

• Howe, M.L., & Lewis, M.D., "The importance of dynamic systems approaches for understanding development", Developmental Review, 2005

• Lewis, M.D., "Self-organizing individual differences in brain development", Developmental Review, 2005

• Lewis, M.D.& Todd, R.M., "Getting emotional: A neural perspective on emotion, intention, and consciousness", Journal of Consciousness Studies, 2005

• Lewis, M.D., "An emerging dialogue among social scientists and neuroscientists on the causal bases of emotion", Behavioral and Brain Sciences, 2005

• Lewis, M.D., "Bridging emotion theory and neurobiology through dynamic systems modeling", Behavioral and Brain Sciences, 2005

• Lewis, M.D. "The Emergence of Mind in the Emotional Brain", in Cognitive Developmental Change: Theories, Models and Measurement (Cambridge University Press, 2005)

2006

• Lewis, M.D., Granic, I., & Lamm, C., "Behavioral differences in aggressive children linked with neural mechanisms of emotion regulation", Annals of the New York Academy of Sciences, 2006

• Hollenstein, T., & Lewis, M.D., "A state space analysis of emotion and flexibility in parent-child interactions", Emotion, 2006

• Lamm, C., Zelazo, P.D., & Lewis, M.D., "Neural correlates of cognitive control in childhood and adolescence: Disentangling the contributions of age and executive function", Neuropsychologia, 2006

• Lewis, M.D., Lamm, C., Segalowitz, S.J., Stieben, S., & Zelazo, P.D., "Neurophysiological correlates of emotion regulation in children and adolescents", Journal of Cognitive Neuroscience, 2006

2007

• Granic, I., O’Hara, A., Pepler, D., & Lewis, M.D., "A dynamic systems analysis of parent-child changes associated with successful “real-world” interventions for aggressive children", Journal of Abnormal Child Psychology, 2007

• Lewis, M.D., & Todd, R.M., "The self-regulating brain: Cortical-subcortical feedback and the development of intelligent action", Cognitive Development, 2007

• Lewis, M.D., & Cook, M.L., "Changing habits of emotion regulation at transition points in infancy: A dynamic systems analysis", Journal of Developmental Processes, 2007

• Stieben, J., Lewis, M.D., Granic, I., Zelazo, P.D., & Pepler, D., "Neurophysiological correlates of emotion regulation for subtypes of antisocial children", Development and Psychopathology, 2007

• Lewis, M.D., Todd, R.M., & Honsberger, M., "Event-related potential measures of emotion regulation in early childhood", NeuroReport, 2007

• Lewis, M.D., "Emotional Habits in Brain and Behavior: A Window on Personality Development", in Human Development in the Twenty-first Century: Visionary Policy Ideas From Systems Scientists (Cambridge University Press, 2007)

2008

• Thompson, R.A., Lewis, M.D., & Calkins, S.D., "Reassessing emotion regulation", Child Development Perspectives, 2008

• Lewis, M.D., Granic, I., Lamm, C., Zelazo, P.D., Stieben, J., Todd, R.M., Moadab, I., & Pepler, D., "Changes in the neural bases of emotion regulation associated with clinical improvement in children with behavior problems", Development and Psychopathology, 2008

• Todd, R.M., Lewis, M.D., Meusel, L.A., & Zelazo, P.D., "The time course of social-emotional processing in early childhood: ERP responses to facial affect and personal familiarity in a Go-Nogo task", Neuropsychologia, 2008

• Todd, R.M., & Lewis, M.D., "Self-regulation in the Developing Brain", in Child Neuropsychology: Concepts, Theory and Practice (Wiley-Blackwell, 2008)

2009

• Woltering, S., & Lewis, M.D., "Developmental pathways of emotion regulation in childhood: A neuropsychological perspective", Mind, Brain, and Education, 2009

• Kesek, A., Zelazo, P.D., & Lewis M.D., "The Development of Executive Cognitive Function and Emotion Regulation in Adolescence", in Adolescent Emotional Development and the Emergence of Depressive Disorders (Cambridge University Press, 2009)

2010

In 2010, he and his wife Isabela Granic, who is also a research scientist in developmental psychopathology, moved to the Netherlands to teach at Radboud University Nijmegen.

With his wife Isabela Granic, he co-wrote the 2010 book Bedtiming: The Parent's Guide to Getting Your Child to Sleep at Just the Right Age, a guide for parents in training their young children in going to sleep at ages that work well, or not well, according to developmental stage theory.

The book draws on both the couple's academic research and their experience as parents of twin boys.

Kingston Whig-Standard reviewer Marilyn Linton noted that it is one of the few books on the topic to consider the importance of cognitive brain development.

• Chapman, H., Woltering, S., Lamm, C.& Lewis, M.D., "Hearts and minds: Coordination of neurocognitive and cardiovascular regulation in children and adolescents", Biological Psychology, 2010

• Lamm, C., & Lewis, M.D., "Developmental change in the neurophysiological correlates of self-regulation in high- and low-emotion conditions", Developmental Neuropsychology, 2010

• Lewis, M.D., Todd, R.M., & Xu, X., "The Development of Emotion Regulation: A Neuropsychological Perspective", in Handbook of Life-Span Development (Wiley, 2010)

• Lewis, M.D., & Granic, I., "Phases of Social-emotional Development From Birth to School Age", in The Developmental Relations Between Mind, Brain, and Education (Springer, 2010)

• Lewis, M.D., "Desire, Dopamine, and Conceptual Development", in Child Development at the Intersection of Emotion and Cognition (American Psychological Association, 2010)

2011

Lewis' 2011 book Memoirs of an Addicted Brain: A Neuroscientist Examines his Former Life on Drugs is a combination of traditional memoir and treatise on the neuroscience of drug addiction.

Lewis alternates between stories from his own life and explanations of how drugs affect the neurochemistry of the brain, using his own experience with addiction to illuminate and humanize the science.

The book was based on journals Lewis kept from age 17.

Kirkus Reviews called it "a smoothly entertaining interplay between lived experience and the particulars of brain activity."

Writing for recovery-focused website The Fix, reviewer Walter Armstrong said that the book "may be the most original and illuminating addiction memoir since Thomas De Quincey's seminal Confessions of an English Opium-Eater," saying that Lewis approached the topic of addiction with "supple intelligence and subtle style" and that Lewis' "unique perspective" as both an addict and a scientist made the book a standout in its genre "as over-the-top suspenseful as David Carr’s classic The Night of the Gun."

• Woltering, S., Granic, I., Lamm, C., & Lewis, M.D., "Neural changes associated with treatment outcome in children with externalizing problems", Biological Psychiatry, 2011

• Lamm, C., Granic, I., Zelazo, P.D., & Lewis, M.D., "Magnitude and chronometry of neural mechanisms of emotion regulation in subtypes of aggressive children", Brain & Cognition, 2011

• Prencipe, A., Kesek, A., Cohen, J., Lamm, C., Lewis, M.D., & Zelazo, P.D., "Development of hot and cool executive function during the transition to adolescence", Journal of Experimental Child Psychology, 2011

• Nenadovic, V., Garcia Dominguez, L., Lewis, M.D., Snead, O.C, Gorin, A., Perez Velazquez, J.L.,, "Transient coordinated activity within the developing brain's default network", Cognitive Neurodynamics, 2011

• Lewis, M.D., "Dynamic systems approaches: Cool enough? Hot enough?", Child Development Perspectives, 2011

• Lewis, M.D., & Liu, Z., "Three time scales of neural self-organization underlying basic and nonbasic emotions", Emotion Review, 2011

• Lewis, M.D., "Dopamine and the neural now: Essay and review of Addiction, a disorder of choice", Perspectives on Psychological Science, 2011

• Todd, R.M., Evans, J.W., Morris, D., Lewis, M.D., & Taylor, M.J., "The changing face of emotion: Age related patterns of amygdala activation to salient faces", Social Cognitive and Affective Neuroscience, 2011

• Lewis, M.D. "The slippery slope of downward causation", Human Development, 2011

• Woltering, S., & Lewis, M.D., "Conceptual Development and Emotion: A Neuropsychological Perspective", in The Wiley-Blackwell Handbook of Childhood Social Development (Wiley-Blackwell, 2011)

2012

He wrote the column "Addicted Brains" for the magazine Psychology Today from 2012 to 2018.

He has also written for The New England Journal of Medicine, The New York Times, Newsweek, Literary Review of Canada, Aeon, Scientific American, University of Toronto Magazine, The Scientist, The Guardian, Huffington Post, and Salon.

Lewis has been married three times.

He and his current wife, Isabela Granic, have twin sons.

He also has a daughter from his second marriage.

• "Dopamine: Duality of Desire", The Scientist, 1 May 2012

2013

and a conversation with the Dalai Lama at the Mind & Life Institute's 2013 conference on addiction in Dharamshala, India.

• Lewis, M., "Choice in Addiction: A Neural Tug of War Between Impulse and Insight", in Addiction and Choice: Rethinking the Relationship (Oxford University Press, 2013)

• Woltering, S., & Lewis, M.D., "Changing the Neural Mechanism of Emotion Regulation in Children With Behavior Problems", in Changing Emotions (Psychology Press, 2013)

2014

• "Addiction Is a Bad Habit That Can Be Learned and Unlearned", New York Times, 10 February 2014

• Liu, X., Woltering, S., & Lewis, M.D., "Developmental change in EEG theta activity in the medial prefrontal cortex during response control", NeuroImage, 2014

2015

Lewis has been a frequent speaker on topics of addiction and neuroscience, including Gustavus Adolphus College's 2015 Nobel Conference, "Addiction: Exploring the Science and Experience of an Equal Opportunity Condition", the TEDxRadboudU 2013 conference.

Lewis' 2015 book The Biology of Desire: Why Addiction is Not a Disease examines the neuroscience of addiction through in-depth case studies of five people living through addiction and recovery.

The book is critical of the standard model of treating addiction as a disease.

Instead, Lewis encourages the control or elimination of substance use and binge-eating disorders through self-sustaining personal empowerment and an understanding of the psychology and neurobiology of addiction.

2016

He retired from academia in 2016.

As a scientist, Lewis has specialized in researching the emotional development of children and adolescents and the questions of how and why the brain changes during addiction.

His academic research, as well as The Biology of Desire and other writing for the non-academic press, has also challenged the "disease model" of addiction, which Lewis says can be counterproductive toward recovery, though he acknowledges it has been helpful for many people.

Instead, Lewis suggests that it is better described as a process of deep learning and habit formation that is destructive and difficult to break, but can be overcome through insight and self-empowerment.

His views have sometimes been controversial.

He has been critical of 12-step programs, saying that although the programs are effective for some people, they tend not to teach the psychological skills, including emotion regulation, needed to reduce or eliminate addictive substance use after leaving.

He argues that the disease model is often used to justify expensive but ineffective treatment by rehabilitation clinics, and encourages passivity, fatalism, and pessimism in those seeking treatment.

Nevertheless, he has said that he thinks the causes of addiction are best seen as somewhere between a compulsion and a choice, calling the two views a "false dichotomy".

The Biology of Desire received the PROSE award for Psychology from the Association of American Publishers in 2016.

Reviews of The Biology of Desire were largely positive.

Kirkus Reviews called it a "intellectually authoritative yet controversial declaration that substance and behavioral dependencies are swiftly and deeply learned via the 'neural circuitry of desire.'" Richard Ferguson of The Sydney Morning Herald praised the book's "very readable" writing style, saying that its "success lies in its ability to communicate complex ideas in a way that will engage you and move you and sometimes make you laugh."

Publishers Weekly agreed, saying "Even when presenting more technical information, Lewis shows a keen ability to put a human face on the most groundbreaking research into addiction."

• "Why we’re hardwired to hate uncertainty", The Guardian, 4 April 2016

• "What LSD tells us about human nature", The Guardian, 15 April 2016

• "Why it’s wrong to call addiction a disease", The Guardian, 7 June 2016

• "Here’s why there are no good or bad drugs–not even heroin", The Guardian, 14 July 2016

• "Is addiction really a disease?", The Observer/The Guardian, 24 July 2016

• "Why is the US banning kratom, the virtually harmless herb?", The Guardian, 9 September 2016

• "The addiction habit", Aeon, 14 December 2016

2017

• "We need ecstasy and opioids in place of Prozac and Xanax", Aeon, 15 May 2017

• "Why are so many people dying from opiate overdoses? It’s our broken society", The Guardian, 10 July 2017

• "The truth about the US ‘opioid crisis’ — prescriptions aren’t the problem", The Guardian, 7 November 2017

• Lewis, M., "Addiction and the brain: Development, not disease", Neuroethics, 2017

2018

• "Why the disease model of addiction does far more harm than good", Scientific American, 9 February 2018

• Lewis, M., "Brain change in addiction as learning, not disease", New England Journal of Medicine, 2018