Happiness, in the context of mental or emotional states, is positive or pleasant emotions ranging from contentment to intense joy. Other forms include life satisfaction, well-being, subjective well-being, flourishing and eudaimonia. Since the 1960s, happiness research has been conducted in a wide variety of scientific disciplines, including gerontology, social psychology and positive psychology, clinical and medical research and happiness economics. Definitions "Happiness" is subject to debate on usage and meaning, and on possible differences in understanding by culture. The word is mostly used in relation to two factors: the current experience of the feeling of an emotion (affect) such as pleasure or joy, or of a more general sense of 'emotional condition as a whole'. For instance Daniel Kahneman has defined happiness as "what I experience here and now". This usage is prevalent in dictionary definitions of happiness. appraisal of life satisfaction, such as of quality of life. For instance Ruut Veenhoven has defined happiness as "overall appreciation of one's life as-a-whole.": 2 Kahneman has said that this is more important to people than current experience. Some usages can include both of these factors. Subjective well-being (swb) includes measures of current experience (emotions, moods, and feelings) and of life satisfaction.[nb 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. Whereas Nordic countries often score highest on swb surveys, South American countries score higher on affect-based surveys of current positive life experiencing. The implied meaning of the word may vary depending on context, qualifying happiness as a polyseme and a fuzzy concept. A further issue is when measurement is made; appraisal of a level of happiness at the time of the experience may be different from appraisal via memory at a later date. Some users accept these issues, but continue to use the word because of its convening power. Measurement 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. Today, happiness is typically measured using self-report surveys. Self-reporting is prone to cognitive biases and other sources of errors, such as peak–end rule. Studies show that memories of felt emotions can be inaccurate. Affective forecasting research shows that people are poor predictors of their future emotions, including how happy they will be. Happiness economists are not overly concerned with philosophical and methodological issues and continue to use questionaries to measure average happiness of populations. 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 Satisfaction with Life Scale (SWLS) is a global cognitive assessment of life satisfaction developed by Ed Diener. A seven-point Likert scale is used to agree or disagree with five statements about one's life. 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. Positive Experience; the survey by Gallup asks if, the day before, people experienced enjoyment, laughing or smiling a lot, feeling well-rested, being treated with respect, learning or doing something interesting. 9 of the top 10 countries in 2018 were South American, led by Paraguay and Panama. Country scores range from 85 to 43. The Ryff scale uses six dimensions to define well-being, they are autonomy, environmental mastery, personal growth, positive relations, purpose in life and self-acceptance. 20 questions are comprised for each aspect of well-being. 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. Academic economists and international economic organizations 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. There are many different contributors to adult wellbeing, that happiness judgements partly reflect the presence of salient constraints, and fairness, autonomy, community and engagement are key aspects of happiness and wellbeing throughout the life course. Although these factors play a role in happiness, they do not all need to improve simultaneously to help one achieve an increase in happiness. Happiness has been found to be quite stable over time. Philosophy Relation to morality 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. Happiness 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. Connections between happiness and morality have been studied in a variety of ways in psychology. Empirical research suggests that laypeople's judgments of a person's happiness in part depend on perceptions of that person's morality, suggesting that judgments of others' happiness involve moral evaluation. A large body of research also suggests that engaging in prosocial behavior can increase happiness. Ethics Ethicists have made arguments for how humans should behave, either individually or collectively, based on the resulting happiness of such behavior. Utilitarians, such as John Stuart Mill and Jeremy Bentham, advocated the greatest happiness principle as a guide for ethical behavior. Aristotle Aristotle described eudaimonia (Greek: εὐδαιμονία) as the goal of human thought and action. Eudaimonia is often translated to mean happiness, but some scholars contend that "human flourishing" may be a more accurate translation. Aristotle's use of the term in Nicomachiean Ethics extends beyond the general sense of happiness. 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. The key question Aristotle seeks to answer is "What is the ultimate purpose of human existence?" a lot of people are seeking pleasure, health, and a good reputation. It is true that those have a value, but none of them can occupy the place of the greatest good for which humanity aims. It may seem like all goods are a means to obtain happiness, but Aristotle said that happiness is always an end in itself. Nietzsche 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. Source: https://en.wikipedia.org/wiki/Happiness