خوشحالی، خرسندی یا شادی (به انگلیسی: Happiness) یک حالت روانی است که در آن فرد احساس عشق، لذت، خوشبختی یا شاد بودن میکند. مسائل مختلفی همچون مسائل زیستی، روانشناختی یا دینی برای تعریف و دلیل خرسندی آورده شدهاست.
تحقیقات نشان دادهاست که شادی رابطه ی مستقیمی با مسائلی همچون روابط و تعاملات اجتماعی، وضعیت فرد از نظر داشتن شریک زندگی، کار، درآمد و حتی نزدیکی به انسانهای شاد دارد. افرادی که در جشن ها، میتینگ و پارتی شرکت می کنند از میزان شادی بیشتری برخوردار هستند. افراد زیادی شادی و خوشحالی را برابر با احساس خوشبختی و سر بلندی می دانند.
فیلسوفان و متفکرانِ مذهبی شادی را واژهای برای یک زندگی خوب یا موفق و نه صرفاً یک احساس، تعریف میکنند.
بنابر برخی اطلاعات موجود که بر اساس دیدگاه مردم گردآوری شدهاند، ایرانیان با جشن، بودن در کنار خانواده، مسافرت، پارک (امکانات اجتماعی)، پیروزی بر دیگران، پولدار بودن و سلامتی احساس شادی میکنند. تحقیقات نشان میدهند مدیتیشن یا مراقبه در کنار تأثیرات مثبت روانشناختی، موجب احساس عمیق شادی در انسان میشود.
یک نظرسنجی که توسط مؤسسه گالوپ در سال ۲۰۱۳ انجام شده حاکی از آن است که ایرانیان دومین مردم ناشاد در دنیا هستند. بنابر گزارش منتشر شده از این نظرسنجی، عراق نخستین کشور جهان در این فهرست است. بعد از عراق و ایران، کشورهای مصر، یونان و سوریه قرار دارند.
در ایران همه ساله در ایام و مناسبتهای مختلف مراسم عزاداری و روضهخوانی برپا میشود و نیز تعزیه بهعنوان جزئی از فرهنگ ایرانیان محسوب میشود، درحالیکه این رسوم و فرهنگها با خوشحالی یا شادی در تعارضاند.
شادی، فرح و سرور در آیات قرآن کتاب مقدس مسلمانان و روایاتشیعه در هر دو مورد مثبت و منفی آمدهاست. گاهی خوشحالان و شادی کنندگان ظالم را از محبت خدا خارج میداند، و گاهی بر خلاف آن، مردم را به سرور و شادی امر میکند. گاهی شادی صفتی برای قارون و جهنمیان، و گاهی صفتی برای شهدا و بهشتیان به حساب آمدهاست. بنابراین، شادی و خوشحالی به تنهایی بد نیست بلکه به آن سفارش شده و سبب و علت شادی باعث خوب بودن یا بد بودن آن میشود.
برای مثال، شادی که باعث تمسخر شود، شادیِ بد محسوب میشود و حرام است. برخی روایتها نیز به نتیجه شادی اشاره میکند و میآورد: «شخصی که باعث سرور مؤمن شود، دین و قرض او را ادا کند، طعامی به او دهد، ناراحتی اش را بزداید، و … در واقع خدا و رسول او را شاد کردهاست.»
البته اگر احساس شادی و شاد بودن، غیرارادی باشد، که هرچند دلیلِ آن ارادی است، اما به این خاطر که خودِ این احساس، بدون قصد برای انسان به وجود میآید، جزء اصل «مالایطیقون شده»، و زیرمجموعه حدیث رفع قرار میگیرد.
 و از جمله: «به وسوسه در آفرینش اندیشیدن»، و «رشک ورزیدن تا زمانی که بر زبان یا دست جاری نشود»، میشود که غیرارادی هستند؛ و در فقه اسلامی حرام و ممنوع نمیباشند. پس شادی میتواند احکام مختلفی داشته باشد.
Some usages can include both of these factors. Subjective well-being includes measures of current experience (emotions, moods, and feelings) and of life satisfaction. For instance Sonja Lyubomirsky has described happiness as “the experience of joy, contentment, or positive well-being, combined with a sense that one's life is good, meaningful, and worthwhile.”Eudaimonia, is a Greek term variously translated as happiness, welfare, flourishing, and blessedness. Xavier Landes has proposed that happiness include measures of subjective wellbeing, mood and eudaimonia.
These differing uses can give different results. For instance the correlation of income levels has been shown to be substantial with life satisfaction measures, but to be far weaker, at least above a certain threshold, with current experience measures.
Philosophy of happiness is often discussed in conjunction with ethics. Traditional European societies, inherited from the Greeks and from Christianity, often linked happiness with morality, which was concerned with the performance in a certain kind of role in a certain kind of social life. However, with the rise of individualism, begotten partly by Protestantism and capitalism, the links between duty in a society and happiness were gradually broken. The consequence was a redefinition of the moral terms. Happiness is no longer defined in relation to social life, but in terms of individual psychology. Happiness, however, remains a difficult term for moral philosophy. Throughout the history of moral philosophy, there has been an oscillation between attempts to define morality in terms of consequences leading to happiness and attempts to define morality in terms that have nothing to do with happiness at all.
In the Nicomachean Ethics, written in 350 BCE, Aristotle stated that happiness (also being well and doing well) is the only thing that humans desire for their own sake, unlike riches, honour, health or friendship. He observed that men sought riches, or honour, or health not only for their own sake but also in order to be happy. For Aristotle the term eudaimonia, which is translated as 'happiness' or 'flourishing' is an activity rather than an emotion or a state. Eudaimonia (Greek: εὐδαιμονία) is a classical Greek word consists of the word "eu" ("good" or "well being") and "daimōn" ("spirit" or "minor deity", used by extension to mean one's lot or fortune). Thus understood, the happy life is the good life, that is, a life in which a person fulfills human nature in an excellent way. Specifically, Aristotle argued that the good life is the life of excellent rational activity. He arrived at this claim with the "Function Argument". Basically, if it is right, every living thing has a function, that which it uniquely does. For Aristotle human function is to reason, since it is that alone which humans uniquely do. And performing one's function well, or excellently, is good. According to Aristotle, the life of excellent rational activity is the happy life. Aristotle argued a second best life for those incapable of excellent rational activity was the life of moral virtue.
Friedrich Nietzsche critiqued the English Utilitarians' focus on attaining the greatest happiness, stating that "Man does not strive for happiness, only the Englishman does." Nietzsche meant that making happiness one's ultimate goal and the aim of one's existence, in his words "makes one contemptible." Nietzsche instead yearned for a culture that would set higher, more difficult goals than "mere happiness." He introduced the quasi-dystopic figure of the "last man" as a kind of thought experiment against the utilitarians and happiness-seekers. these small, "last men" who seek after only their own pleasure and health, avoiding all danger, exertion, difficulty, challenge, struggle are meant to seem contemptible to Nietzsche's reader. Nietzsche instead wants us to consider the value of what is difficult, what can only be earned through struggle, difficulty, pain and thus to come to see the affirmative value suffering and unhappiness truly play in creating everything of great worth in life, including all the highest achievements of human culture, not least of all philosophy.
In 2004 Darrin McMahon claimed, that over time the emphasis shifted from the happiness of virtue to the virtue of happiness.
Not all cultures seek to maximise happiness, and some cultures are averse to happiness.
The Chinese Confucian thinker Mencius, who had sought to give advice to ruthless political leaders during China's Warring States period, was convinced that the mind played a mediating role between the "lesser self" (the physiological self) and the "greater self" (the moral self), and that getting the priorities right between these two would lead to sage-hood. He argued that if one did not feel satisfaction or pleasure in nourishing one's "vital force" with "righteous deeds", then that force would shrivel up (Mencius, 6A:15 2A:2). More specifically, he mentions the experience of intoxicating joy if one celebrates the practice of the great virtues, especially through music.
Happiness or simcha (Hebrew: שמחה) in Judaism is considered an important element in the service of God. The biblical verse "worship The Lord with gladness; come before him with joyful songs," (Psalm 100:2) stresses joy in the service of God. A popular teaching by Rabbi Nachman of Breslov, a 19th-century Chassidic Rabbi, is "Mitzvah Gedolah Le'hiyot Besimcha Tamid," it is a great mitzvah (commandment) to always be in a state of happiness. When a person is happy they are much more capable of serving God and going about their daily activities than when depressed or upset.
The primary meaning of "happiness" in various European languages involves good fortune, chance or happening. The meaning in Greek philosophy, however, refers primarily to ethics.
According to St. Augustine and Thomas Aquinas, man's last end is happiness: "all men agree in desiring the last end, which is happiness." However, where utilitarians focused on reasoning about consequences as the primary tool for reaching happiness, Aquinas agreed with Aristotle that happiness cannot be reached solely through reasoning about consequences of acts, but also requires a pursuit of good causes for acts, such as habits according to virtue. In turn, which habits and acts that normally lead to happiness is according to Aquinas caused by laws: natural law and divine law. These laws, in turn, were according to Aquinas caused by a first cause, or God.
According to Aquinas, happiness consists in an "operation of the speculative intellect": "Consequently happiness consists principally in such an operation, viz. in the contemplation of Divine things." And, "the last end cannot consist in the active life, which pertains to the practical intellect." So: "Therefore the last and perfect happiness, which we await in the life to come, consists entirely in contemplation. But imperfect happiness, such as can be had here, consists first and principally in contemplation, but secondarily, in an operation of the practical intellect directing human actions and passions."
Human complexities, like reason and cognition, can produce well-being or happiness, but such form is limited and transitory. In temporal life, the contemplation of God, the infinitely Beautiful, is the supreme delight of the will. Beatitudo, or perfect happiness, as complete well-being, is to be attained not in this life, but the next.
Happiness can be examined in experiential and evaluative contexts. Experiential well-being, or "objective happiness", is happiness measured in the moment via questions such as "How good or bad is your experience now?". In contrast, evaluative well-being asks questions such as "How good was your vacation?" and measures one's subjective thoughts and feelings about happiness in the past. Experiential well-being is less prone to errors in reconstructive memory, but the majority of literature on happiness refers to evaluative well-being. The two measures of happiness can be related by heuristics such as the peak-end rule.
Some commentators focus on the difference between the hedonistic tradition of seeking pleasant and avoiding unpleasant experiences, and the eudaimonic tradition of living life in a full and deeply satisfying way.
Theories on how to achieve happiness include "encountering unexpected positive events", "seeing a significant other", and "basking in the acceptance and praise of others".
However others believe that happiness is not solely derived from external, momentary pleasures.
Maslow's hierarchy of needs
Maslow's hierarchy of needs is a pyramid depicting the levels of human needs, psychological, and physical. When a human being ascends the steps of the pyramid, he reaches self-actualization. Beyond the routine of needs fulfillment, Maslow envisioned moments of extraordinary experience, known as peak experiences, profound moments of love, understanding, happiness, or rapture, during which a person feels more whole, alive, self-sufficient, and yet a part of the world. This is similar to the flow concept of Mihály Csíkszentmihályi. Amitai Etzioni points out that Maslow's definition of human needs, even on the highest level, that of self-actualization, is self-centered (i.e. his view of satisfaction or what makes a person happy, does not include service to others or the common good—unless it enriches the self). As implied by its name, self-actualization is highly individualistic and reflects Maslow's premise that the self is “sovereign and inviolable” and entitled to “his or her own tastes, opinions, values, etc.”
Ronald Inglehart has traced cross-national differences in the level of happiness based on data from the World Values Survey. He finds that the extent to which a society allows free choice has a major impact on happiness. When basic needs are satisfied, the degree of happiness depends on economic and cultural factors that enable free choice in how people live their lives. Happiness also depends on religion in countries where free choice is constrained.
Since 2000 the field of positive psychology has expanded drastically in terms of scientific publications, and has produced many different views on causes of happiness, and on factors that correlate with happiness. Numerous short-term self-help interventions have been developed and demonstrated to improve happiness.
People have been trying to measure happiness for centuries. In 1780, the English utilitarian philosopher Jeremy Bentham proposed that as happiness was the primary goal of humans it should be measured as a way of determining how well the government was performing.
Several scales have been developed to measure happiness:
The Subjective Happiness Scale (SHS) is a four-item scale, measuring global subjective happiness from 1999. The scale requires participants to use absolute ratings to characterize themselves as happy or unhappy individuals, as well as it asks to what extent they identify themselves with descriptions of happy and unhappy individuals.
The Positive and Negative Affect Schedule (PANAS) from 1988 is a 20-item questionnaire, using a five-point Likert scale (1 = very slightly or not at all, 5 = extremely) to assess the relation between personality traits and positive or negative affects at "this moment, today, the past few days, the past week, the past few weeks, the past year, and in general".  A longer version with additional affect scales was published 1994.
The Cantril ladder method has been used in the World Happiness Report. Respondents are asked to think of a ladder, with the best possible life for them being a 10, and the worst possible life being a 0. They are then asked to rate their own current lives on that 0 to 10 scale.
Since 2012, a World Happiness Report has been published. Happiness is evaluated, as in “How happy are you with your life as a whole?”, and in emotional reports, as in “How happy are you now?,” and people seem able to use happiness as appropriate in these verbal contexts. Using these measures, the report identifies the countries with the highest levels of happiness. In subjective well-being measures, the primary distinction is between cognitive life evaluations and emotional reports.
The UK began to measure national well being in 2012, following Bhutan, which had already been measuring gross national happiness.Amitai Etzioni has argued that happiness is 'the wrong metric', because individuals also need to live up to their responsibilities to others and the common good, which may not produce happiness in the way this term is usually used.
Happiness has been found to be quite stable over time.
Relationship to physical characteristics
This section needs expansion. You can help by adding to it. (October 2017)
As of 2016, no evidence of happiness causing improved physical health has been found; the topic is being researched at the Lee Kum Sheung Center for Health and Happiness at the Harvard T.H. Chan School of Public Health.
A positive relationship has been suggested between the volume of the brain´s gray matter in the right precuneus area and one's subjective happiness score.
Possible limits on happiness seeking
As of 2018 June Gruber a psychologist at University of Colorado has suggested that seeking happiness can also have negative effects, such as failure to meet over-high expectations, and has advocated a more open stance to all emotions. A 2012 study found that wellbeing was higher for people who experienced both positive and negative emotions. Other research has analysed possible trade-offs between happiness and meaning in life.
Sigmund Freud said that all humans strive after happiness, but that the possibilities of achieving it are restricted because we "are so made that we can derive intense enjoyment only from a contrast and very little from the state of things."
Economic and political views
Newly commissioned officers celebrate their new positions by throwing their midshipmen covers into the air as part of the U.S. Naval Academy class of 2011 graduation and commissioning ceremony.
In politics, happiness as a guiding ideal is expressed in the United States Declaration of Independence of 1776, written by Thomas Jefferson, as the universal right to "the pursuit of happiness." This seems to suggest a subjective interpretation but one that goes beyond emotions alone. It has to be kept in mind that the word happiness meant "prosperity, thriving, wellbeing" in the 18th century and not the same thing as it does today. In fact, happiness .
Common market health measures such as GDP and GNP have been used as a measure of successful policy. On average richer nations tend to be happier than poorer nations, but this effect seems to diminish with wealth. This has been explained by the fact that the dependency is not linear but logarithmic, i.e., the same percentual increase in the GNP produces the same increase in happiness for wealthy countries as for poor countries. Increasingly, academic economists and international economic organisations are arguing for and developing multi-dimensional dashboards which combine subjective and objective indicators to provide a more direct and explicit assessment of human wellbeing. Work by Paul Anand and colleagues helps to highlight the fact that there many different contributors to adult wellbeing, that happiness judgement reflect, in part, the presence of salient constraints, and that fairness, autonomy, community and engagement are key aspects of happiness and wellbeing throughout the life course.
Libertarianthink tankCato Institute claims that economic freedom correlates strongly with happiness preferably within the context of a western mixed economy, with free press and a democracy. According to certain standards, East European countries when ruled by Communist parties were less happy than Western ones, even less happy than other equally poor countries.
Since 2003, empirical research in the field of happiness economics, such as that by Benjamin Radcliff, professor of Political Science at the University of Notre Dame, supported the contention that in democratic countries life satisfaction is strongly and positively related to the social democratic model of a generous social safety net, pro-worker labor market regulations, and strong labor unions. Similarly, there is evidence that public policies which reduce poverty and support a strong middle class, such as a higher minimum wage, strongly affect average levels of well-being.
It has been argued that happiness measures could be used not as a replacement for more traditional measures, but as a supplement. According to the Cato institute, people constantly make choices that decrease their happiness, because they have also more important aims. Therefore, government should not decrease the alternatives available for the citizen by patronizing them but let the citizen keep a maximal freedom of choice.
Good mental health and good relationships contribute more than income to happiness and governments should take these into account.
Research on positive psychology, well-being, eudaimonia and happiness, and the theories of Diener, Ryff, Keyes, and Seligmann covers a broad range of levels and topics, including "the biological, personal, relational, institutional, cultural, and global dimensions of life."
^"How Universal is Happiness?" Ruut Veenhoven, Chapter 11 in Ed Diener, John F. Helliwell & Daniel Kahneman (Eds.) International Differences in Well-Being, 2010, Oxford University Press, New York, ISBN978-0-19-973273-9
^https://plato.stanford.edu/entries/happiness/ 2011, "‘Happiness’ is often used, in ordinary life, to refer to a short-lived state of a person, frequently a feeling of contentment: ‘You look happy today’; ‘I’m very happy for you’. Philosophically, its scope is more often wider, encompassing a whole life. And in philosophy it is possible to speak of the happiness of a person’s life, or of their happy life, even if that person was in fact usually pretty miserable. The point is that some good things in their life made it a happy one, even though they lacked contentment. But this usage is uncommon, and may cause confusion.' https://plato.stanford.edu/entries/well-being/ 2017
^Kashdan, Todd B.; Biswas-Diener, Robert; King, Laura A. (2008). "Reconsidering happiness: The costs of distinguishing between hedonics and eudaimonia". The Journal of Positive Psychology. 3 (4): 219–233. doi:10.1080/17439760802303044.
^"Surveying large numbers of Americans in one case, and what is claimed to be the first globally representative sample of humanity in the other, these studies found that income does indeed correlate substantially (.44 in the global sample), at all levels, with life satisfaction—strictly speaking, a “life evaluation” measure that asks respondents to rate their lives without saying whether they are satisfied. Yet the correlation of household income with the affect measures is far weaker: globally, .17 for positive affect, –.09 for negative affect; and in the United States, essentially zero above $75,000 (though quite strong at low income levels). If the results hold up, the upshot appears to be that income is pretty strongly related to life satisfaction, but weakly related to emotional well-being, at least above a certain threshold." Section 3.3, Happiness, Stanford Encyclopedia of Philosophy, https://plato.stanford.edu/entries/happiness/#HedVerEmoSta
^"High income improves evaluation of life but not emotional well-being", Daniel Kahneman and Angus Deaton, Proceedings of the National Academy of Sciences, 21/9/10
^"How does happiness come into this classification? For better or worse, it enters in three ways. It is sometimes used as a current emotional report – “How happy are you now?,” sometimes as a remembered emotion, as in “How happy were you yesterday?,” and very often as a form of life evaluation, as in “How happy are you with your life as a whole these days?” People answer these three types of happiness question differently, so it is important to keep track of what is being asked. The good news is that the answers differ in ways that suggest that people understand what they are being asked, and answer appropriately." John Helliwell and Shun Yang, p11, World Happiness Report 2012 http://worldhappiness.report/ed/2012/
^"Some have argued that it is misleading to use ‘happiness’ as a generic term to cover subjective well-being more generally. While ‘subjective well-being’ is more precise, it simply does not have the convening power of ‘happiness’. The main linguistic argument for using happiness in a broader generic role is that happiness plays two important roles within the science of well-being, appearing once as a prototypical positive emotion and again as part of a cognitive life evaluation question. This double use has sometimes been used to argue that there is no coherent structure to happiness responses. The converse argument made in the World Happiness Reports is that this double usage helps to justify using happiness in a generic role, as long as the alternative meanings are clearly understood and credibly related. Evidence from a growing number of large scale surveys shows that the answers to questions asking about the emotion of happiness differ from answers to judgmental questions asking about a person’s happiness with life as a whole in exactly the ways that theory would suggest. Answers to questions about the emotion of happiness relate well to what is happening at the moment. Evaluative answers, in response to questions about life as a whole, are supported by positive emotions, as noted above, but also driven much more, than are answers to questions about emotions, by a variety of life circumstances, including income, health and social trust." John F. Helliwell and others, World Happiness Report, 2015, quoted in What’s Special About Happiness as a Social Indicator? John F. Helliwell, Published online: 25 February 2017, Springer Science+Business Media Dordrecht 2017.
^MacIntyre, Alasdair (1998). A Short History of Ethics (Second ed.). London: Routledge & Kegan Paul Ltd. p. 167.
^ abJoshanloo, Mohsen; Weijers, Dan (2014). "Aversion to Happiness Across Cultures: A Review of Where and Why People are Averse to Happiness". Journal of Happiness Studies. 15 (3): 717–735. doi:10.1007/s10902-013-9489-9.
^Adrianne Aron, “Maslow’s Other Child,” Journal of Humanistic Psychology 17(2), 1977, 13; Amitai Etzioni, Happiness is the Wrong Metric: A Liberal Communitarian Response to Populism, Springer, January 2018.
^Lyubomirsky, Sonja; Lepper, Heidi S. (February 1999). "A Measure of Subjective Happiness: Preliminary Reliability and Construct Validation". Social Indicators Research. 46 (2): 137–55. doi:10.1023/A:1006824100041. JSTOR27522363.
^Watson, David; Clark, Lee A.; Tellegen, Auke (1988). "Development and validation of brief measures of positive and negative affect: The PANAS scales". Journal of Personality and Social Psychology. 54 (6): 1063–70. doi:10.1037/0022-3522.214.171.1243. PMID3397865.
^ abLevin, K. A.; Currie, C. (2014). "Reliability and Validity of an Adapted Version of the Cantril Ladder for Use with Adolescent Samples". Social Indicators Research. 119 (2): 1047–1063. doi:10.1007/s11205-013-0507-4.
^Baumeister, Roy F.; Vohs, Kathleen D.; Aaker, Jennifer L.; Garbinsky, Emily N. (November 2013). "Some key differences between a happy life and a meaningful life". The Journal of Positive Psychology. 8 (6): 505–516. doi:10.1080/17439760.2013.830764.
^Costa, Paul T.; McCrae, Robert R.; Zonderman, Alan B. (August 1987). "Environmental and dispositional influences on well-being: Longitudinal follow-up of an American national sample". British Journal of Psychology. 78 (3): 299–306. doi:10.1111/j.2044-8295.1987.tb02248.x.
^Baumeister, Roy F.; Vohs, Kathleen D.; Aaker, Jennifer L.; Garbinsky, Emily N. (2013). "Some key differences between a happy life and a meaningful life". The Journal of Positive Psychology. 8 (6): 505–516. doi:10.1080/17439760.2013.830764.
^Abe, Jo Ann A. (2016). "A longitudinal follow-up study of happiness and meaning-making". The Journal of Positive Psychology. 11 (5): 489–498. doi:10.1080/17439760.2015.1117129.
^Radcliff, Benjamin (2013) The Political Economy of Human Happiness (New York: Cambridge University Press).[page needed] See also this collection of full-text peer reviewed scholarly articles on this subject by Radcliff and colleagues (from "Social Forces," "The Journal of Politics," and "Perspectives on Politics," among others) Archived 2015-07-12 at the Wayback Machine[improper synthesis?]
Joop Hartog & Hessel Oosterbeek "Health, wealth and happiness", 1997
Hills P., Argyle M. (2002). "The Oxford Happiness Questionnaire: a compact scale for the measurement of psychological well-being. Personality and Individual Differences". Psychological Wellbeing. 33 (7): 1073–82. doi:10.1016/s0191-8869(01)00213-6.