Positive psychology is "the scientific study of what makes life most worth living", or "the scientific study of positive human functioning and flourishing on multiple levels that include the biological, personal, relational, institutional, cultural, and global dimensions of life". Positive psychology is concerned with eudaimonia, "the good life", reflection about what holds the greatest value in life – the factors that contribute the most to a well-lived and fulfilling life.
Positive psychology began as a new domain of psychology in 1998 when Martin Seligman chose it as the theme for his term as president of the American Psychological Association. Mihaly Csikszentmihalyi, Christopher Peterson and Barbara Fredrickson are regarded as co-initiators of this development. It is a reaction against psycho-analysis and behaviorism, which have focused on "mental illness", meanwhile emphasising maladaptive behavior and negative thinking. It builds further on the humanistic movement, which encouraged an emphasis on happiness, well-being, and positivity, thus creating the foundation for what is now known as positive psychology.
Positive psychologists have suggested a number of ways in which individual happiness may be fostered. Social ties with a spouse, family, friends and wider networks through work, clubs or social organisations are of particular importance, while physical exercise and the practice of meditation may also contribute to happiness. Happiness may rise with increasing financial income, though it may plateau or even fall when no further gains are made.
Definition and basic assumptionsEdit
Seligman and Csikszentmihalyi define positive psychology as "... the scientific study of positive human functioning and flourishing on multiple levels that include the biological, personal, relational, institutional, cultural, and global dimensions of life." Christopher Peterson defines positive psychology as "... the scientific study of what makes life most worth living".
Positive psychology is concerned with eudaimonia, "the good life" or flourishing, living according to what holds the greatest value in life – the factors that contribute the most to a well-lived and fulfilling life. While not attempting a strict definition of the good life, positive psychologists agree that one must live a happy, engaged, and meaningful life in order to experience "the good life". Martin Seligman referred to "the good life" as "using your signature strengths every day to produce authentic happiness and abundant gratification". According to Christopher Peterson, "eudaimonia trumps hedonism".
Positive psychology complements, without intending to replace or ignore, the traditional areas of psychology. By emphasizing the study of positive human development this field helps to balance other approaches that focus on disorder, and which may produce only limited understanding. Positive psychology has also placed a significant emphasis on fostering positive self-esteem and self-image, though positive psychologists with a less humanist bent are less likely to focus as intently on the matter. 
The basic premise of positive psychology is that human beings are often drawn by the future more than they are driven by the past. A change in our orientation to time can dramatically affect how we think about the nature of happiness. Seligman identified other possible goals: families and schools that allow children to grow, workplaces that aim for satisfaction and high productivity, and teaching others about positive psychology.
Those who practice positive psychology attempt psychological interventions that foster positive attitudes toward one's subjective experiences, individual traits, and life events. The goal is to minimize pathological thoughts that may arise in a hopeless mindset, and to, instead, develop a sense of optimism toward life. Positive psychologists seek to encourage acceptance of one's past, excitement and optimism about one's future experiences, and a sense of contentment and well-being in the present.
According to Seligman and Peterson, positive psychology is concerned with three issues: positive emotions, positive individual traits, and positive institutions. Positive emotions are concerned with being content with one's past, being happy in the present and having hope for the future. Positive individual traits focus on one's strengths and virtues. Finally, positive institutions are based on strengths to better a community of people.
According to Peterson, positive psychologists are concerned with four topics: (1) positive experiences, (2) enduring psychological traits, (3) positive relationships, and (4) positive institutions. According to Peterson, topics of interest to researchers in the field are: states of pleasure or flow, values, strengths, virtues, talents, as well as the ways that these can be promoted by social systems and institutions.
The term positive psychology dates back at least to 1954, when Maslow's first edition of Motivation and personality was published with a final chapter titled "Toward a Positive Psychology." In the second edition (1970), he removed that chapter, saying in the preface that "a positive psychology is at least available today though not very widely." There have been indications that psychologists since the 1950s have been increasingly focused on the promotion of mental health rather than merely treating mental illness.
Positive psychology began as a new area of psychology in 1998 when Martin Seligman chose it as the theme for his term as president of the American Psychological Association. In the first sentence of his book Authentic Happiness, Seligman claimed: "for the last half century psychology has been consumed with a single topic only – mental illness", expanding on Maslow's comments.[a] He urged psychologists to continue the earlier missions of psychology of nurturing talent and improving normal life.
The first positive psychology summit took place in 1999. The First International Conference on Positive Psychology took place in 2002. More attention was given by the general public in 2006 when, using the same framework, a course at Harvard University became particularly popular. In June 2009, the First World Congress on Positive Psychology took place at the University of Pennsylvania.
The International Positive Psychology Association (IPPA) is a recently established association that has expanded to thousands of members from 80 different countries. The IPPA's missions include: (1) "further the science of positive psychology across the globe and to ensure that the field continues to rest on this science" (2) "work for the effective and responsible application of positive psychology in diverse areas such as organizational psychology, counselling and clinical psychology, business, health, education, and coaching", (3) "foster education and training in the field".
The field of positive psychology today is most advanced in the United States and Western Europe. Even though positive psychology offers a new approach to the study of positive emotions and behavior, the ideas, theories, research, and motivation to study the positive side of human behavior is as old as humanity.
Several humanistic psychologists, most notably Abraham Maslow, Carl Rogers, and Erich Fromm, developed theories and practices pertaining to human happiness and flourishing. More recently, positive psychologists have found empirical support for the humanistic theories of flourishing. In addition, positive psychology has moved ahead in a variety of new directions.
In 1984, Diener published his tripartite model of subjective well-being, positing "three distinct but often related components of wellbeing: frequent positive affect, infrequent negative affect, and cognitive evaluations such as life satisfaction". In this model, cognitive, affective and contextual factors contribute to subjective well-being. According to Diener and Suh, subjective well-being is "...based on the idea that how each person thinks and feels about his or her life is important".
Carol Ryff's Six-factor Model of Psychological Well-being was initially published in 1989, and additional testing of its factors was published in 1995. It postulates six factors which are key for well-being, namely self-acceptance, personal growth, purpose in life, environmental mastery, autonomy, and positive relations with others.
According to Corey Keyes, who collaborated with Carol Ryff and uses the term flourishing as a central concept, mental well-being has three components, namely hedonic (c.q. subjective or emotional), psychological, and social well-being. Hedonic well-being concerns emotional aspects of well-being, whereas psychological and social well-being, c.q eudaimonic well-being, concerns skills, abilities, and optimal functioning. This tripartite model of mental well-being has received extensive empirical support across cultures.
Theory and methodsEdit
There is no accepted "gold standard" theory in positive psychology, however the work of Seligman is regularly quoted. So too the work of Csikszentmihalyi and older models of well-being, such as Carol Ryff's Six-factor Model of Psychological Well-being and Diener's tripartite model of subjective well-being.
Initial theory: three paths to happinessEdit
- Pleasant life: research into the Pleasant Life, or the "life of enjoyment", examines how people optimally experience, forecast, and savor the positive feelings and emotions that are part of normal and healthy living (e.g., relationships, hobbies, interests, entertainment, etc.). Despite the attention given, Martin Seligman says this most transient element of happiness may be the least important.
- Good Life: investigation of the beneficial effects of immersion, absorption, and flow, felt by individuals when optimally engaged with their primary activities, is the study of the Good Life, or the "life of engagement". Flow is experienced when there is a positive match between a person's strength and their current task, i.e., when one feels confident of accomplishing a chosen or assigned task.[b]
- Meaningful Life: inquiry into the Meaningful Life, or "life of affiliation", questions how individuals derive a positive sense of well-being, belonging, meaning, and purpose from being part of and contributing back to something larger and more permanent than themselves (e.g., nature, social groups, organizations, movements, traditions, belief systems).
In Flourish (2011) Seligman argued that the last category of his proposed three kinds of a happy life, "meaningful life", can be considered as 3 different categories. The resulting acronym is PERMA: Positive Emotions, Engagement, Relationships, Meaning and purpose, and Accomplishments. It is a mnemonic for the five elements of Martin Seligman's well-being theory:
- Positive emotions include a wide range of feelings, not just happiness and joy. Included are emotions like excitement, satisfaction, pride and awe, amongst others. These emotions are frequently seen as connected to positive outcomes, such as longer life and healthier social relationships.
- Engagement refers to involvement in activities that draws and builds upon one's interests. Mihaly Csikszentmihalyi explains true engagement as flow, a state of deep effortless involvement, feeling of intensity that leads to a sense of ecstasy and clarity. The task being done needs to call upon higher skill and be a bit difficult and challenging yet still possible. Engagement involves passion for and concentration on the task at hand and is assessed subjectively as to whether the person engaged was completely absorbed, losing self-consciousness.
- Relationships are essential in fueling positive emotions, whether they are work-related, familial, romantic, or platonic. As Christopher Peterson puts it simply, "Other people matter." Humans receive, share, and spread positivity to others through relationships. They are important not only in bad times, but good times as well. In fact, relationships can be strengthened by reacting to one another positively. It is typical that most positive things take place in the presence of other people.
- Meaning is also known as purpose, and prompts the question of "why". Discovering and figuring out a clear "why" puts everything into context from work to relationships to other parts of life. Finding meaning is learning that there is something greater than one's self. Despite potential challenges, working with meaning drives people to continue striving for a desirable goal.
- Accomplishments are the pursuit of success and mastery. Unlike the other parts of PERMA, they are sometimes pursued even when accomplishments do not result in positive emotions, meaning, or relationships. That being noted, accomplishments can activate the other elements of PERMA, such as pride, under positive emotion. Accomplishments can be individual or community-based, fun- or work-based.
Each of the five PERMA elements was selected according to three criteria:
- It contributes to well-being.
- It is pursued for its own sake.
- It is defined and measured independently of the other elements.
Character Strengths and VirtuesEdit
The development of the Character Strengths and Virtues (CSV) handbook (2004) represented the first attempt by Seligman and Peterson to identify and classify positive psychological traits of human beings. Much like the Diagnostic and Statistical Manual of Mental Disorders (DSM) of general psychology, the CSV provided a theoretical framework to assist in understanding strengths and virtues and for developing practical applications for positive psychology. This manual identified 6 classes of virtues (i.e., "core virtues"), underlying 24 measurable character strengths.
The CSV suggested these 6 virtues have a historical basis in the vast majority of cultures; in addition, these virtues and strengths can lead to increased happiness when built upon. Notwithstanding numerous cautions and caveats, this suggestion of universality hints threefold: 1. The study of positive human qualities broadens the scope of psychological research to include mental wellness, 2. the leaders of the positive psychology movement are challenging moral relativism, suggesting people are "evolutionarily predisposed" toward certain virtues, and 3. virtue has a biological basis.
The organization of the 6 virtues and 24 strengths is as follows:
- Wisdom and knowledge: creativity, curiosity, open-mindedness, love of learning, perspective, innovation
- Courage: bravery, persistence, integrity, vitality, zest
- Humanity: love, kindness, social intelligence
- Justice: citizenship, fairness, leadership
- Temperance: forgiveness and mercy, humility, prudence, self control
- Transcendence: appreciation of beauty and excellence, gratitude, hope, humor, spirituality
Recent research challenged the need for 6 virtues. Instead, researchers suggested the 24 strengths are more accurately grouped into just 3 or 4 categories: Intellectual Strengths, Interpersonal Strengths, and Temperance Strengths or alternatively, Interpersonal Strengths, Fortitude, Vitality, and Cautiousness These strengths, and their classifications, have emerged independently elsewhere in literature on values. Paul Thagard described examples; these included Jeff Shrager's workshops to discover the habits of highly creative people. Some research indicates that well-being effects that appear to be due to spirituality are actually better described as due to virtue.
In the 1970s Csikszentmihalyi's began studying flow, a state of absorption where one's abilities are well-matched to the demands at-hand. Flow is characterized by intense concentration, loss of self-awareness, a feeling of being perfectly challenged (neither bored nor overwhelmed), and a sense that "time is flying". Flow is intrinsically rewarding; it can also assist in the achievement of goals (e.g., winning a game) or improving skills (e.g., becoming a better chess player). Anyone can experience flow, in different domains, such as play, creativity, and work. Flow is achieved when the challenge of the situation meets one's personal abilities. A mismatch of challenge for someone of low skills results in a state of anxiety; insufficient challenge for someone highly skilled results in boredom.
Applications and research findingsEdit
Research in positive psychology, well-being, eudaimonia and happiness, and the theories of Diener, Ryff, Keyes and Seligman cover a broad range of topics including "the biological, personal, relational, institutional, cultural, and global dimensions of life". A meta-analysis on 49 studies in 2009 showed that Positive Psychology Interventions (PPI) produced improvements in well-being and lower depression levels, the PPIs studied included writing gratitude letters, learning optimistic thinking, replaying positive life experiences and socializing with others. In a later meta-analysis of 39 studies with 6,139 participants in 2012, the outcomes were positive. Three to six months after a PPI the effects for subjective well-being and psychological well-being were still significant. However the positive effect was weaker than in the 2009 meta analysis, the authors concluded that this was because they only used higher quality studies. The PPIs they considered included counting blessings, kindness practices, making personal goals, showing gratitude and focusing on personal strengths.
Ilona Boniwell, in her book Positive Psychology in a Nutshell, provided the following summary of the current research. Wellbeing is related to optimism, extraversion, social connections (i.e. close friendships), being married, having engaging work, religion or spirituality, leisure, good sleep and exercise, social class (through lifestyle differences and better coping methods) and subjective health (what you think about your health). Wellbeing is not related to age, physical attractiveness, money (once basic needs are met), gender (women are more often depressed but also more often joyful), educational level, having children (although they add meaning to life), moving to a sunnier climate, crime prevention, housing and objective health (what doctors say).
Sonja Lyubomirsky, in her book The How Of Happiness, says that to improve happiness individuals should create new habits; they can seek out new emotions, use variety and timing to prevent hedonic adaptation and enlist others to motivate and support during the creation of those new habits. Lyubomirsky gives 12 happiness activities such as savouring life, learning to forgive and living in the present, each of which could become the basis for a new habit.
In Positive Psychology: The Science of Happiness, the authors Compton and Hoffman give the "Top Down Predictors" of wellbeing as high self esteem, optimism, self efficacy, a sense of meaning in life and positive relationships with others. The personality traits most associated with well being are extraversion, agreeability and low levels of neuroticism.
In the Journal of Occupational Rehabilitation, Kreutzer and Mills argue for the principles of positive psychology to be implemented to assist those recovering from traumatic brain injury (TBR). They make the case that TBI rehabilitation practices rely on the betterment of the individual through engaging in everyday practices, a practice significantly related to tenets of positive psychology. Their proposal to connect positive psychology with TBI vocational rehabilitation (VR) also looks at happiness and its correlation with improvements in mental health, including increased confidence and productivity, as well as others. While the authors point out that empirical evidence for positive psychology is limited, they clarify that positive psychology's focus on small successes, optimism and prosocial behaviour is promising for improvements in the social and emotional well-being of TBI patients.
According to Kirk Schneider, positive psychology fails to explain past heinous behaviors such as those perpetrated by the Nazi party, Stalinist marches and Klan gatherings, to identify but a few. Furthermore, Schneider pointed to a body of research showing high positivity correlates with positive illusion, which effectively distorts reality. The extent of the downfall of high positivity (also known as flourishing) is one could become incapable of psychological growth, unable to self-reflect, and tend to hold racial biases. By contrast, negativity, sometimes evidenced in mild to moderate depression, is correlated with less distortion of reality. Therefore, negativity might play an important role within the dynamics of human flourishing. To illustrate, conflict engagement and acknowledgement of appropriate negativity, including certain negative emotions like guilt, might better promote flourishing. Overall, Schneider provided perspective: "perhaps genuine happiness is not something you aim at, but is a by-product of a life well lived – and a life well lived does not settle on the programmed or neatly calibrated." Seligman has acknowledged in his work the point about positive illusion, and is also a critic of merely feeling good about oneself apart from reality and recognises the importance of negativity / dysphoria.
Ian Sample, writing for The Guardian, noted that, "Positive psychologists also stand accused of burying their heads in the sand and ignoring that depressed, even merely unhappy people, have real problems that need dealing with." Sample also quoted Steven Wolin, a clinical psychiatrist at George Washington University, as saying that the study of positive psychology is just a reiteration of older ways of thinking, and that there is not much scientific research to support the efficacy of this method. Gable responds to criticism on their pollyanna view on the world by saying that they are just bringing a balance to a side of psychology that is glaringly understudied. To defend his point, Gable points to the imbalances favouring research into negative psychological wellbeing in cognitive psychology, health psychology, and social psychology.
Barbara S. Held argued that while positive psychology makes contributions to the field of psychology, it has its faults. She offered insight into topics including the negative side effects of positive psychology, negativity within the positive psychology movement, and the current division in the field of psychology caused by differing opinions of psychologists on positive psychology. In addition, she noted the movement's lack of consistency regarding the role of negativity. She also raised issues with the simplistic approach taken by some psychologists in the application of positive psychology. A "one size fits all" approach is arguably not beneficial to the advancement of the field of positive psychology; she suggested a need for individual differences to be incorporated into its application.
Martin Jack has also maintained that positive psychology is not unique in its optimistic approach to looking at optimal emotional wellbeing, stating that other forms of psychology, such as counselling and educational psychology, are also interested in positive human fulfillment. He goes on to mention that, while positive psychology has pushed for schools to be more student-centred and able to foster positive self-images in children, he worries that a lack of focus on self-control may prevent children from making full contributions to society. 
- Anatomy of an Epidemic
- Aversion to happiness
- Louise Burfitt-Dons
- Culture and positive psychology
- Happiness economics
- Meaning of life
- Positive education
- Positive Neuroscience
- Positive youth development
- Psychological resilience
- Rational ignorance
- Second wave positive psychology
- Sex-positive movement
- Theory of humor
- Maslow wrote:
The science of psychology has been far more successful on the negative than on the positive side. It has revealed to us much about man’s shortcomings, his illness, his sins, but little about his potentialities, his virtues, his achievable aspirations, or his full psychological height. It is as if psychology has voluntarily restricted itself to only half its rightful jurisdiction, the darker, meaner half.
- See related concepts: Self-efficacy and play.
- Peterson, Christopher (16 May 2008). "What Is Positive Psychology, and What Is It Not?". Psychology Today. Retrieved 11 July 2018.
- Seligman & Csikszentmihalyi 2000.
- "Time Magazine's cover story in the special issue on "The Science of Happiness", 2005" (PDF). Archived from the original (PDF) on 2006-07-11. Retrieved 2011-02-07.
- Tal., Ben-Shahar, (2007). Happier : learn the secrets to daily joy and lasting fulfillment. New York: McGraw-Hill. ISBN 0071510966. OCLC 176182574.
- Srinivasan, T. S. (2015, February 12). The 5 Founding Fathers and A History of Positive Psychology. Retrieved February 4, 2017, from https://positivepsychologyprogram.com/founding-fathers/
- The 5 Founding Fathers and A History of Positive Psychology
- Positive Psychology Progress: Empirical Validation of Interventions. Seligman, Martin E. P.; Steen, Tracy A.; Park, Nansook; Peterson, Christopher American Psychologist, Vol 60(5), Jul-Aug 2005, 410-421. https://dx.doi.org/10.1037/0003-066X.60.5.410
- Seligman 2002, p. 13.
- Peterson 2009.
- Mruk, Christopher (April 2008). "The Psychology of Self-Esteem: A Potential Common Ground for Humanistic Positive Psychology and Positivistic Positive Psychology". The Humanistic Psychologist. 36 (2): 143. Retrieved March 16, 2018.
- Seligman, Martin E.P. "Positive Psychology Center." Positive Psychology Center. University of Pennsylvania, 2007. Web. 12 Mar. 2013.
- Seligman, M. E., & Csikszentmihalyi, M. (2014). Positive psychology: An introduction (pp. 279-298). Springer Netherlands.
- Shesthra, Arjun (December 2016). "Positive psychology: Evolution, philosophical foundations, and present growth". Indian Journal of Positive Psychology. 7 (4): 460–465.
- Graham, Michael C. (2014). Facts of Life: ten issues of contentment. Outskirts Press. pp. 6–10. ISBN 978-1-4787-2259-5.
- Peterson 2006.
- Maslow, Abraham H. (1970). Motivation and Personality (2nd ed.). New York: Harper & Row.
- Secker J (1998). "Current conceptualizations of mental health and mental health promotion" (PDF). 13 (1). Health Education Research. p. 58. Retrieved 2010-05-18.
... Amongst psychologists ... the importance of promoting health rather than simply preventing ill-health date back to the 1950s (Jahoda, 1958)
- Dianne Hales (2010). "An Invitation to Health, Brief: Psychological Well-Being" (2010–2011 ed.). Wadsworth Cengage Learning. p. 26. Retrieved 2010-05-18.
- "Positive Psychology: The Benefits of Living Positively". World of Psychology. 2013-03-11. Retrieved 2018-02-19.
- Seligman 2002, p. xi.
- Maslow, Motivation and Psychology, p. 354
- Compton 2005, pp. 1–22.
- Ben-Shahar, Ben (2007) "Happier -Learn the Secrets to Daily Joy and Lasting Fulfillment", First Edition, McGraw-Hill Co.
- Reuters, Jun 18, 2009: First World Congress on Positive Psychology Kicks Off Today With Talks by Two of the World's Most Renowned Psychologists[permanent dead link]
- International Positive Psychology Association (IPPA) (2011). international positive psychology association. Retrieved from "Archived copy". Archived from the original on 2013-03-24. Retrieved 2013-03-23.
- Compton, William C., and Edward Hoffman. Positive Psychology: The Science of Happiness and Flourishing. 2nd ed. Belmont, CA: Wadsworth Cengage Learning, 2013. Print.
- Tov & Diener (2013), Subjective Well-Being. Research Collection School of Social Sciences. Paper 1395. http://ink.library.smu.edu.sg/soss_research/1395
- Costa Galinha, Iolanda; Pais-Ribeiro, José Luís (2011). "Cognitive, affective and contextual predictors of subjective wellbeing". International Journal of Wellbeing. 2 (1): 34–53. doi:10.5502/ijw.v2i1.3.
- Diener, Suh, Ed, Eunkook (2000). Culture and Subjective Well-being. A Bradford Book. p. 4.
- Carol Ryff’s Model of Psychological Well-being. The Six Criteria of Well-Being
- Robitschek, Christine; Keyes, Corey L. M. "Keyes's model of mental health with personal growth initiative as a parsimonious predictor". Journal of Counseling Psychology. 56 (2): 321–329. doi:10.1037/a0013954.
- Keyes 2002.
- Joshanloo, Mohsen (2015-10-23). "Revisiting the Empirical Distinction Between Hedonic and Eudaimonic Aspects of Well-Being Using Exploratory Structural Equation Modeling". Journal of Happiness Studies: 1–14. doi:10.1007/s10902-015-9683-z. ISSN 1389-4978.
- Joshanloo, Mohsen; Lamers, Sanne M. A. (2016-07-01). "Reinvestigation of the factor structure of the MHC-SF in the Netherlands: Contributions of exploratory structural equation modeling". Personality and Individual Differences. 97: 8–12. doi:10.1016/j.paid.2016.02.089.
- Gallagher, Matthew W.; Lopez, Shane J.; Preacher, Kristopher J. (2009-08-01). "The Hierarchical Structure of Well-Being". Journal of Personality. 77 (4): 1025–1050. doi:10.1111/j.1467-6494.2009.00573.x. ISSN 1467-6494. PMC 3865980. PMID 19558444.
- David Sze (2015), The Father of Positive Psychology and His Two Theories of Happiness
- Seligman 2002, p. 275.
- Wallis, Claudia (2005-01-09). "Science of Happiness: New Research on Mood, Satisfaction". TIME. Archived from the original on 2010-11-15. Retrieved 2011-02-07.
- Sze, David (2015-06-17). "The Father of Positive Psychology and His Two Theories of Happiness". Huffington Post. Retrieved 2018-02-19.
- "The World Question Center 2011— Page 2". Edge.org. Retrieved 2011-02-07.
- Seligman 2011, ch. 1.
- "The Pursuit of Happiness".
- "Mihaly Csikszentmihalyi TED talk".
- "Healthy Lifestyle Tips".
- "Other People Matter".
- "Using Positive Psychology in Your Relationships".
- "Why do You do What You Do?".
- "The Science of a Happy Startup".
- Peterson & Seligman 2004.
- Peterson & Seligman 2004, p. 51.
- Shryack, J.; Steger, M. F.; Krueger, R. F.; Kallie, C. S. (2010). "The structure of virtue: An empirical investigation of the dimensionality of the virtues in action inventory of strengths". Personality and Individual Differences. 48 (6): 714–719. doi:10.1016/j.paid.2010.01.007.
- Brdr, I.; Kashdan, T.B. (2010). "Character strengths and well-being in Croatia: An empirical investigation of structure and correlates". Journal of Research in Personality. 44: 151–154. doi:10.1016/j.jrp.2009.12.001.
- Thagard, P. (2005). How to be a successful scientist. In M. E. Gorman, R. D. Tweney, D. C. Gooding & A. P. Kincannon (Eds.), Scientific and technological thinking (pp. 159- 171). Mawah, NJ: Lawrence Erlbaum Associates.
- Schuurmans-Stekhoven, James (2011). "Is it God or just the data that moves in mysterious ways? How wellbeing researchers may be mistaking faith for virtue". Social Indicators Research. 100 (2): 313–330. doi:10.1007/s11205-010-9630-7.
- Csikszentmihalyi, Mihaly (1990). Flow: The Psychology of Optimal Experience. New York: Harper & Row. ISBN 0-06-016253-8.
- Nancy L. Sin; Sonja Lyubomirsky (May 2009). "Enhancing Well-Being and Alleviating Depressive Symptoms With Positive Psychology Interventions:A Practice-Friendly Meta-Analysis". Journal of Clinical Psychology. 65 (5): 467–487, particularly 468, 471, 474, 483. doi:10.1002/jclp.
- Linda Bolier; et al. (2013). "Positive psychology interventions: a meta-analysis of randomized controlled studies". BMC Public Health. 13 (119). doi:10.1186/1471-2458-13-119.
- Positive Psychology in a Nutshell, Ilona Boniwell, Open University Press, 2012, p.44
- The How of Happiness, Sonja Lyubomirsky, 2007, Piatkus, p.270-p.294
- Positive Psychology The Science of Happiness, William C. Compton and Edward Hoffman, Wadsworth, 2005, p.55-p.62
- Mills & Kreutzer 2016.
- Schneider, K. (2011). "Toward a Humanistic Positive Psychology". Existential Analysis: Journal of the Society for Existential Analysis. 22 (1): 32–38.
- Fredrickson, B. L.; Losada, M. F. (2005). "Positive Affect and the Complex Dynamics of Human Flourishing". American Psychologist. 60 (7): 678–686. doi:10.1037/0003-066X.60.7.678. PMC 3126111. PMID 16221001.
- Schneider, Kirk J. (29 November 2010). "Toward a Humanistic Positive Psychology: Why Can't We Just Get Along?". Psychology Today. Retrieved 11 July 2018.
- Seligman 1995, pp. 295–299.
- Seligman 1995, pp. 41–42.
- Sample, I. (19 November 2003). "How to be happy". The Guardian.
- Gable, S. L., & Haidt, J. (2005). What (and why) is positive psychology?. Review of general psychology, 9(2), 103.
- Shesthra, Arjun (December 2016). "Positive psychology: Evolution, Philosophical Foundations, and Present Growth". Indian Journal of Positive Psychology. 7 (4): 460-465.
- Held 2004.
- Martin, Jack (2006). "Self Research in Educational Psychology: A Cautionary Tale of Positive Psychology in Action". The Journal of Psychology. 140 (4): 307-316. Retrieved 13 March 2018.
- Compton, William C. (2005). An Introduction to Positive Psychology. Belmont, California: Wadsworth Publishing. ISBN 978-0-534-64453-6.
- Held, Barbara S. (2004). "The Negative Side of Positive Psychology". Journal of Humanistic Psychology. 44 (1): 9–41. doi:10.1177/0022167803259645.
- Keyes, Corey L. M. (2002). "The Mental Health Continuum: From Languishing to Flourishing in Life". Journal of Health and Social Behavior. 43 (2): 207–222. doi:10.2307/3090197. ISSN 0022-1465.
- Mills, Ana; Kreutzer, Jeffrey (2016). "Theoretical Applications of Positive Psychology to Vocational Rehabilitation after Traumatic Brain Injury". Journal of Occupational Rehabilitation. 26 (1): 20–31. doi:10.1007/s10926-015-9608-z. ISSN 1573-3688.
- Peterson, Christopher (2006). A Primer in Positive Psychology. New York: Oxford University Press. ISBN 978-0-19-518833-2.
- ——— (2009). "Positive Psychology". Reclaiming Children and Youth. 18 (2): 3–7. ISSN 1089-5701.
- Peterson, Christopher; Seligman, Martin E. P. (2004). Character Strengths and Virtues: A Handbook and Classification. Oxford: Oxford University Press. ISBN 978-0-19-516701-6.
- Seligman, Martin E. P. (1995). The Optimistic Child. Boston, Massachusetts: Houghton Mifflin Company.
- ——— (2002). Authentic Happiness: Using the New Positive Psychology to Realize Your Potential for Lasting Fulfillment. New York: Free Press. ISBN 978-0-7432-2297-6.
- ——— (2004). "Can Happiness Be Taught?". Daedalus. 133 (2): 80–87. doi:10.1162/001152604323049424. ISSN 1548-6192.
- ——— (2011). Flourish: A Visionary New Understanding of Happiness and Well-Being. New York: Free Press. ISBN 978-1-4391-9076-0.
- Seligman, Martin E. P.; Csikszentmihalyi, Mihaly (2000). "Positive Psychology: An Introduction". American Psychologist. 55 (1): 5–14. doi:10.1037/0003-066x.55.1.5. PMID 11392865.
- Argyle, Michael (2001). The Psychology of Happiness. London: Routledge.
- Benard, Bonnie (2004). Resiliency: What We Have Learned. San Francisco: WestEd.
- Biswas-Diener, Robert; Diener, Ed; Tamir, Maya (2004). "The Psychology of Subjective Well-Being". Daedalus. 133 (2): 18–25. doi:10.1162/001152604323049352. ISSN 1548-6192.
- Dalai Lama; Cutler, Howard C. (1998). The Art of Happiness. New York: Riverhead Books. ISBN 978-1-57322-111-5.
- Fromm, Eric (1973). The Anatomy of Human Destructiveness. New York: New York, Holt, Rinehart and Winston. ISBN 0-03-007596-3.
- Kahneman, Daniel; Diener, Ed; Schwarz, Norbert, eds. (2003). Well-Being: The Foundations of Hedonic Psychology. New York: Russell Sage Foundation Publications. ISBN 978-0-87154-424-7.
- Keyes, Corey L. M.; Haidt, Jonathan, eds. (2003). Flourishing: Positive Psychology and the Life Well-lived. Washington: American Psychological Association. pp. 275–289. ISBN 978-1-55798-930-7.
- Kashdan, Todd (2009). Curious? Discover the Missing Ingredient to a Fulfilling Life. New York: HarperCollins. ISBN 978-0-06-166118-1.
- McMahon, Darrin M. (2006). Happiness: A History. New York: Atlantic Monthly Press. ISBN 978-0-87113-886-6.
- Robbins, Brent Dean (2008). "What Is the Good life? Positive Psychology and the Renaissance of Humanistic Psychology" (PDF). The Humanistic Psychologist. 36 (2): 96–112. doi:10.1080/08873260802110988. ISSN 1547-3333.
- Seligman, Martin (1990). Learned Optimism: How to Change Your Mind and Your Life. Free Press.
- Snyder, C. R.; Lopez, Shane J. (2001). Handbook of Positive Psychology. Oxford University Press.
- Stebbins, R. A. (2015). Leisure and Positive Psychology: Linking Activities with Positiveness. Houndmills, England: Palgrave Macmillan.
- Zagano, Phyllis; Gillespie, C. Kevin (2006). "Ignatian Spirituality and Positive Psychology" (PDF). The Way. 45 (4): 41–58. Retrieved 11 July 2018.
|Wikiversity has learning resources about Positive psychology|
- Christopher Peterson, What Is Positive Psychology, and What Is It Not?
- The 5 Founding Fathers and A History of Positive Psychology
- The Father of Positive Psychology and His Two Theories of Happiness
- University of Pennsylvania, Authentic Happiness, website of Martin Seligman
- Martin Seligman presentation on positive psychology (Video) at TED conference
- The Karma of Happiness: A Buddhist Monk Looks at Positive Psychology by Thanissaro Bhikkhu
- The positive words dictionary: An online resource of positive words for use in Positive Psychology https://positivewordsdictionary.com