27th January 2010 Lancaster Environment Centre and Royal Geographical Society Seminar University of Lancaster Why social inequality persists Danny Dorling University of Sheffield Based on the book: “Injustice: why social inequality persists”, to be published by Policy Press in April 2010. www.shef.ac.uk/sasi Of all the 25 richest countries in the world, the US and UK rank as 2nd and 4th most unequal respectively when the annual income of the best-off tenth of their population is compared that of the poorest tenth. In descending order of inequality the 10%:10% income ratios are: 17.7 Singapore, 15.9 United States, 15.0 Portugal, 13.8 United Kingdom, 13.4 Israel, 12.5 Australia, 12.5 New Zealand, 11.6 Italy, 10.3 Spain, 10.2 Greece, 9.4 Canada, 9.4 Ireland, 9.2 Netherlands, 9.1 France, 9.0 Switzerland, 8.2 Belgium, 8.1 Denmark, 7.8 Korea (Republic of), 7.3 Slovenia, 6.9 Austria, 6.9 Germany, 6.2 Sweden, 6.1 Norway, 5.6 Finland, and 4.5 Japan. The five new tenets of injustice 1.Elitism is efficient; 2. Exclusion is necessary; 3. Prejudice is natural; In what are now the most unequal of the world’s twenty five richest countries people have come slowly to accept different 4. ways of thinking. Different presumptions about others. Greed is good; Different to those held in the more equitable and average countries. New beliefs have local flavour and antecedents. Britain, as the five social evils identified by Beveridge at 5. InDespair is inevitable. the dawn of the British welfare state are gradually being eradicated (ignorance, want, idleness, squalor and disease), they are being replaced by five new tenets of injustice. Extent of education in Britain 1880-2013 Who we think it is fitting to educate changes over time. When Nelson Mandela was put on trial in 1963 he faced a possible death sentence. In his concluding court statement he defined, as an equality worth fighting for, the right of children to be treated equally in education and for them to be taught that Africans and Europeans were equal and merited equal attention. At that time the South African government spent twelve times as much on educating each European child as on each African child. Lifetime ratios between the extremes in Britain are not dissimilar. Children by ‘ability’, the Netherlands 2006 International tests are used today to label children by supposed ‘ability’. The above graph is derived from the OECD (2007). ‘None’ implies possessing no knowledge as far as can be measured. ‘Limited’ implies possessing very limited knowledge. ‘Barely’ stands for barely possessing adequate knowledge in the minds of the assessors. ‘Simple’ means understanding only simple concepts. ‘Effective’ is a little less damning. ‘Developed’ is better again; but only ‘Advanced’ pupils are found to be capable, it is said, of the kind of thinking that might include ‘critical insight’. Children by ‘ability’, the elitist model Almost no matter how the students had ‘performed’ in the OECD tests, the curves drawn above from the results of those tests would have been bell shaped. When calibrating the results (adjusting the scores before release), it was “…assumed that students have been sampled from a multivariate normal distribution”. OECD (2009, page 145). These educational economists decided upon the ability distribution of children before they began testing them. If you do that, then, even in the Netherlands, every seventh child is, at best, “limited”. Nobel Prizes illustrate bias (1901-2008) Until 2009 only around one in twenty top prices were awarded to women. Testing humans is almost always to an extent disingenuous. To win a Nobel Prize the key requirements were first to be alive in the right century and then to be of the right sex. Even male mainstream economists know that Albert Einstein, Alan Turing and James Watson were just the inventors of “…discoveries about to happen. If these particular individuals had not found them, others would have made these discoveries instead.”. : Kay, J. (2004, page 258). Nobel Prizes to women 1901-2008, & 2009 In 2009 one glass ceiling was shattered. Over a third of Nobel prizes were awarded to women when usually a twentieth had been. On Monday October the 5th 2009 Elizabeth Blackburn, Carol Greider and Jack Szostak jointly shared the award in medicine. On Tuesday October the 6th the Physics prize when to Charles Kao, Willard Boyle and George Smith. And on Wednesday October the 7th the Chemistry prize went to Venkatraman Ramakrishnan, Thomas Steitz and Ada Yonath. A third of the prize winners by the third day were women. Herta Müller was awarded the prize in literature on October 8th, yet another, Elinor Ostrom, shared the Sveriges Riksbank Prize in Economics that was awarded on October 12th and was a huge surprise. No woman had been awarded that prize before. The unsurprising and predicable award was to President Obama, in hope of peace. History provides the measure of what there is to be overcome. Elitism being efficient is suggested by Economic models designed to find that: “…the costs of trying to increase educational attainment by a general rise in school expenditure far exceed the economic benefits.” This is ‘found’ in Denmark because In full this elitist (but sadly economically conventional claim reads): “This simple calculation shows that the estimated effect school expenditure on educational attainment “…the returns toofeducation in Denmark are low is very small, and it indicates that the costs of trying to increase educational attainment by a compared to, forfarexample, the US benefits. or theThis UK, general rise in school expenditure exceed the economic is especially so since thebecause returns to education in Denmark are low compared to, for example, the US or the of a very compressed wage structure.” UK, because of a very compressed wage structure.” Heinesen, E. and B. K. Graverseny (2005, page 126). ! Elitism is efficient if you believe in a deity who discriminates at birth: “…with ‘the young’ we should ... push them … until the young children … get the chance to make the most of their God given potential.” (Tony Blair, 2005). The same is true if your personal religion is the kind of science that invokes the fictional If you believe that GodA or more Genes gives differing children differing positions at the that starting “IQ gene”. convincing science finds posts of education; then education, education, education is not about equality, opportunity or outcome. It is about realising that which is largely pre-ordained ‘the we are born “plastic”. We inherit the ability by not Lord’. See Ball, S. J. (2008, page 12 for Tony Blair’s words in full). Our genes (or the gods if to you like)inherit endow us ability. with what is called ‘plasticity’ at birth. We inherit the ability not to inherit ability. The Brown eyed / Blue eyed test is key: Treat children differently in class by the colour of their eyes and watch: There is striking evidence that performance and behaviour in an educational task can be profoundly affected by the way we feel we are seen and judged by others. When “… we expect to be viewed as inferior, our abilities seem to be reduced.” That is See Wilkinson, R. and K. Pickett (2009, chapter 8), the work of James Flynn, and the studies enough toboys explain away the results theCombined, studiesthese of of how Afro-Caribbean were treated in schools in 1968 inof Britain. explain later measured differences in test twins. ‘performance’. They do so far better than the separated ‘identical’ ‘general factor’ determining your so called intelligence what eugenists called inherited intelligence or “..the non-committal symbol of ‘g.’” Wells, H. G., J. Huxley and G. P. Wells (1931, page 822, quoting Prof. Charles Spearman). Inequality clouds judgement Elitist thinking not only determines children’s life chances but also has an effect on everything that is seen as decent or acceptable in a society. Where elitist thinking was allowed to grow most strongly, social exclusion became more widespread again. In the UK we tolerate older adult benefits of only £9 a day to live on: exclusion from society. Social exclusion is the new image of injusticePauperization. that grew out of the old face, out of general eradication of the bulk of an old social evil, ‘want’; going hungry, wanting for clothes and other basic possessions, warmth and other essentials. But to go back to see the origins of the idea that the poor will always be with us unless ‘we’ control ‘their’ behaviour, look back to the world’s first ever geographical example of a graph used to suggest in-breeding of “the unfit”. Geographical distribution of paupers, England and Wales, 1891, by Karl Pearson There is a long history to suggesting that geographical concentrations of paupers imply exclusion is ‘naturally’ distributed. The figure above is redrawn from the original (Pearson 1895, Figure 17, plate 13). On the X axis: paupers per ten thousand people; Y axis: frequency of unions reporting each rate. Given what we now know – the graph suggests that despite the structures of the poor laws paupers did move out of poorer areas, but new paupers were constantly being created. Migration, not “in-breeding” segregated rich and poor over time. What it means to be poor changes: Households - poor by different measures If a family is poor by two out of three ways of measuring poverty you can be sure they are badly off. One sixth of households in Britain are this poor. Those who are subjectively poor describe themselves as poor. Those who are necessities poor do not have access to the goods or services deemed necessary to be included in the normal life of society. Low income is the way poverty remains officially measured in the UK (source Bradshaw and Finch, 2003). Households cycle into and above poverty: People get into debt to avoid their standard of living falling immediately when their incomes fall. Above, the X axis measures income poverty. The Y axis measures adequacy of material goods (necessities). Households tend to circulate anti-clockwise. Source: David Gordon, Townsend Centre for International Poverty Research, University of Bristol (http://www.bris.ac.uk/poverty/). Social mobility is lowest where the lengths of these axes are longest. Sustaining postwar growth in rich nations after the 70s would have required another planet growth Poverty as measuredDecadal through low income or by otherwise being excluded from the spending norms of society rose(in in Britain and America in the 1970s as the rich sought to rates GDP) maintain high growth in their wealth despite the worldwide slump. The poorest continent and poorer people in richer continents suffered most from the slump: ‘Real growth’ per decade in GDP (%) per person by continent 1955-2001 (drawn above) shows the widening gap. Source: Estimates by Angus Maddison, from versions provided in spreadsheets given in www.worldmapper.org. The global bell-curve is of income distribution: The curve only looks ‘normal’ when money is valued multiplicatively (hence the log X axis). The affluent in rich countries excluding themselves from social norms results in ever greater consumption by smaller groups in the rich world that, in turn, causes want to rise elsewhere. It regenerates the old evil of the most basic of wants rises as peasants are made into paupers in the poorest of countries. “Pauperization is now clearly seen by many to be the direct end result of massive economic polarization on a world scale” (Amin, S., 2004). If unchecked, unjust belief builds on unjust belief: 1. “elitism is efficient”… 2. “exclusion is necessary”… 3. “prejudice is natural” But remember: Unlike other species human infants have very few of Humans as they grow are able (and have) to adapt to the conditions they find themselves born into. Those human beings born with fixed inherent traits would have been less likely to their neural pathways already committed at birth. survive through the rapidly changing environments that they found themselves in over the arehistory. bornPrejudice helpless. course ofWe (human) is not ‘natural’. We evolved to become more flexible. That evolution means we now inherit the ability not to inherit particular abilities. But, simultaneously, none of us are that able. Almost all of us find memorizing 5 digit numbers difficult. Those who don’t usually find much else difficult. Idiosyncracies that others tend to be better at. It is only by working in concert that we do well. How are you finding ‘things’? How’s life in the UK? Households’ ability to get by on their income in Britain, 1984-2004. Source: Derived from (ONS, Social Trends, 2006, table 5.15, page 78, mean of 1984, 1994, and 2004 surveys). Finding ‘it difficult to manage’ is a very British euphemism for not managing. Among those Ask: doing better than this, almost half the population in Britain describe themselves ‘as only just coping’! So, how did we get to this situation? A lack of political ambition as compared to How what politicians have achieved in the majority of affluent countries can be blamed. In did we gettrust others more, are less scared of their neighbours, share most affluent countries people their resources out more equitably and are less prejudiced in their opinions of others in their to this? country (Wilkinson and Pickett 2009). Answer: Enough people voted for it – in the right places at the right times Conservative vote concentration 1918-2005 Concentration of Conservative votes, general elections 1918-2005. This graph shows the spatial segregation index for Britain. The index shows the minimum proportion of such voters who would have to be transferred between a fixed set of parliamentary constituencies if each constituency were to have the same national proportion of Conservative voters at each general election. The geographical concentration reflects how people come less to know, to share the views of, their neighbours in other areas. The ‘over-concentration’ of votes since 1997 and not just their low numbers lost the Conservatives power from then until at least 2005, but the influence of their concentrating ‘geographical block’ affected all politics. Left wing politicians feared the right-wing “middle-Britain”. Income inequality in Britain: the trend What the richest 1% get As a result of what first became politically possible and then, apparently, politically Share of all income received by the richest 1% in Britain 1918-2009. Lower line is post-tax impossible, inequality share. Source, Dorling 2010 updating and relying on Atkinson (2003) and Brewer, Sibieta et fell and then rose al. (2008). Recent bankers bonuses are not included above. If the full extent of the 2008 and 2009 bankers’ bonuses are added, inequality by 2010 would be seen to exceed the 1922 gilded-age maxima. Taxation of the bonuses in 2010 may, for the first time since the 1970s, see this rise in the exclusion of the very richest be curtailed. However, it is not just bankers that constitute the most affluent single percentile of the population. The most harmful cost of inequality: Inequality in health – premature mortality In more unequal times, and in the aftermath of the shock of mass unemployment, more people in poorer areas die young as compared to other times and places. The prospects of the wealthy also move away from those of the average. The line marked by white squares shows how much lower the age-sex standardized under age 65 mortality rate of and worse off average. area - The line marked by dark the best-off 10% by areaBest is as compared to the diamonds shows how much higher thatfrom of theaverage worst-off 30% is than the average. (Source differences Dorling and Thomas 2009, derived from Table 4.3 with interpolation between five year rates in some circumstances). If unchecked unjust belief builds on unjust belief, upon unjust belief: 1. “elitism is efficient”… 2. “exclusion is necessary”… 3. “prejudice is natural” 4. Greed is good! (still!!) It is still quietly being claimed that ultimately, “greed is good’” even by some of those who reported from outside of collapsing banks. As the BBC correspondent Robert Preston wrote, in 2008, in support still of the orthodox economic model, the mantra remains “greed is good”: Preston, R. (2008, page 336). We sustain injustice while we still think that we have to rely on the trickle-down attributed to the ‘wealth-generation’ that is assumed to be a byproduct of the greed of a few in the elite. This occurs while millions of others are excluded from social norms and presumed to be unable to generate wealth themselves. 7% of single adults own 2 or more cars We tolerate this: It is unjust that in a country full of cars so many parents of the poorest young children have to walk. There are clearly enough cars for every household that needs a car to have a car. Around 7% of ‘spare’ cars are owned by single adults who cannot physically drive more than one at a time. Children living with only one adult in their household are double in absolute number, and many more time as likely to be living without a car than are children living with two parents. It is much harder to live without a car if you have children and no other adults to rely on. If you are able bodied and not caring for young children or others who cannot walk far and you live in a city then in an equitable country public transport works better than driving. …because of greed We racked up our debt because of greed Debt in the USA Outstanding consumer debt as a proportion of disposable income, USA 1975-2005. The debt was needed to “keep up with the Joneses” and to keep living away from those you increasingly fear if you live in a more unequal affluent country. The bars show the ratio of debt to annual disposable income with axis to the right. The line shows the percentage change in that ratio over the coming five years (with axis to the left). Disposable income is the income after paying taxes. Derived from: Board of Governors of the Federal Reserve System, Flows of Funds, Accounts of the United States, Historical Series and Annual Flows and Outstandings, Fourth Quarter 2005 (Foster 2006). We pollute the poor because of greed Poverty rate by NOx emission and ambient air quality for 10,444 British wards in 1999. When you drive a car (to let you live further from the poor but still get to work) it is not just you who suffers inconvenience. It is people living in those parts of inner cities which are poorest, where they are least likely to own cars, who breathe in the most air pollution from the exhausts of the cars of those who drive past their homes (graph from Mitchell and Dorling 2003). Note: low emitting and polluting quintiles are labelled 1, the highest are labelled 5. The proportion living in poverty is derived from breadline surveys. We avoid/evade tax because of greed Social security and taxation prosecutions, Australia, counts, 1989-2003 Source: Redrawn from figures originally appearing as a graph in the Journal of Social Policy, and in a presentation by Greg Marston (2007). Much the same could be drawn for Britain except that social security fraud has been falling in recent years while tax avoidance/evasion has been rising greatly (Horton and Gregory, 2009, page 211). Widespread greed makes us progressively care more for ourselves and our immediate gratification and more suspicious of others and other types of planning. We pay more in ‘interest’ because of greed Debt payments as % of disposable income, United States, 1980-2008 One persons’ greed pollutes all others’ lives, raises house prices for them and sees less spent on social housing, further congests their roads, reduces educational spending for the many in favour of a few, personal income inaccording the USA sees health care being sold on a private market rather than allocated to need, and even pollutes the thinking of society as aspent whole. The above and is drawn from data ongraph interest rent provided by the Federal Reserve Board on required debt payments on mortgage and consumer debt, automobile lease payments, rental payments, insurance, and property tax payments (Foster 2006 gives data source). The five tenets end in rising despair 1. “elitism is efficient”… 2. “exclusion is necessary”… 3. “prejudice is natural” 4. Greed is good! Despair is the final injustice of the five new faces of inequality, mutating from the old social evil of widespread physical disease. Health services now exist that effectively treat and contain most physical disease in affluent countries. However, while most physical maladies are now well treated with high-quality care in all but the most unequal of rich countries, mental illness has been measured and found to rising across the rich world. Almost all of that rise is due to the fastest increases in measured rates of depression and anxiety rising found to be within the most economically unequal of affluent nations. 5.Despaircomestobeseenas .........Inevitable Children in unequal rich countries are suffering rising anxiety Reports from trials Girls assessed in Adolescent girls assessed as depressed, %, North America, 1984-2001. as In this graph circle North America size is drawn proportionate to clinical trail size. Source: Reanalysis of (Costello, Erkanli et al. depressed by 2006) The data shown above are for those studies where the children lived in the United age 15found in more States, the U. S. territory of Puerto Rico, or Canada. The around same trend is not equitable affluent nations, but is found in data drawn from Britain and among adults as well as children. One in three families in Britain now live with a family member suffering from poor mental health. This is most often depression or anxiety. More and more pills are prescribed The rate of prescribing antidepressants by the NHS in Scotland Prescriptions per day per 1000 people, mainly of SSRIs (such as Prozac), 1992-2006. Across the whole of Scotland prescription of antidepressants rose over the course of the 1997 to 2005 period to include almost a tenth of the population regularly being dosed up (far more in parts of Glasgow). All this before the summer of 2007, the crash of 2008, and the gloom of 2009. Source: NHS (2007, Table 1.1, page 12). Measuring: Defined Daily Doses per 1,000 people aged 15+. Note: The National Health Service uses financial years when reporting on prescribing rates. Possibly because costs are still mainly counted in terms of money rather than human misery? Young men are also particularly vulnerable Men dying per woman by age and birth cohort Male/female mortality ratio by age in the rich world (1850–1999). Although higher rates of anxiety and depression are recorded for women than men, it is men who suffer the bulk of the excess premature mortality that now accompanies perceived economic failure and particularly age cohorts entering the labour market at the wrong time. Source: original Failure Cigarettes figure given in Rigby and Dorling (2007), sample size 1 billion people. Note: Each line refers to the cohort born in the decade it is labelled by. The X axis gives ages. The Y axis gives how many more times a man of that age born in that decade is likely to die in a year as compared to a women living in the same set of countries born at the same time and of the same age. In 2009/2010 many trends went “off-scale” Home Loans USA 1977-2009 Annual change United States mortgage debt (% change and $bn) 1977-2008. All was very far from And $ good at the height of the boom, but there is now much more to be fearful of. Right hand axis, net $billion additional borrowed in year shown by the bars in the graph. Leftbillions hand axis: % change in that amount. Final percentage change unknown but to be based on a denominator of ‘just’ -$46bn (the only negative bar). It is show plummeting down off the scale. Bar and line for 2009 figures are included above2009… as known by Q1 2010. Source: United States Federal Reserve (Debt growth, borrowing and debt ! outstanding tables). Old divides are being widened again In 1934 as a result of the 1929 crash, special areas were created in an Act of parliament. Money was moved north. In 2010 money is being moved from regeneration There is asouth North-South / West-East Divide in who is carrying most of the cost. The Audit Commission published figures during 2009 showing how budgets in the North were being schemes and area cut to fund the housing market bail-out in the South in a report aptly titled “when it comes initiative to help fund is the social, economic and political divide in to the crunch”. The divide shown above England. Below the line people live about a year more on average; identical houses cost various bail-outs. much more, people in similar situations are more likely to vote Conservative than above the line, and much more besides. For a more detailed description of the line and exactly where it is estimated to run see: www.sasi.group.shef.ac.uk/maps/nsdivide www.sasi.group.shef.ac.uk/maps/nsdivide Clear thinking is harder in more unequal countries Before you ask what is to be done, you have to decide what is wrong that you currently may condone. In becoming a grossly unequal society it is “Perhaps the most serious problem created by growing inequality that it facilitates the usually isclear thinking reproduction of the politics and ideology of inequality.” (Irvin, 2008) Such politics sees among the and first inequality rise as in recession it is the low skilled who arethat laid offisfirst and in growth those with what are seen as high skills who benefit most from ‘competition’ (Kelsey, 1997). casualties of new levels The mantra that “greed is still good” is played to the rhythm of “there is no alternative” of ‘normal’ inequality sung to the tune that “massive cuts demonstrate economic responsibility”. Quick gains are possible You can only do that which you come to believe is possible, acceptable and desirable. First you need to know. For instance: More people aged 5 to 25 are killed by cars than in any other way in the UK. So 20mph speed limit in residential areas should be a key public health policy. Thoughts and memories can be made foggy by living for too long under too much inequality. What was seen clearly as injustice began to be excused as inevitable. Unless you look around at most of the rest of the rich world for alternatives, and at all of the rest of the world for what happens when you are so mistaken. Can we aim to only be as unequal as the average OECD country. Is that too much of an aspiration? Other changes take longer In affluent countries with elitist education all children do worse at school. Solutions: Ensure the nearest school to every child is funded by need, not just numbers. Introduce free higher education for those who attend their nearest university. education from a redistribution If all this isFund obviously just, sensible and fair then why is it not done?of It ismonies not done because of what people in the most unequal ofamong affluent nations have come to believe and have been from the wealthy the old, not by putting taught. Far too many believe that they themselves are amongst the most able tiny fraction, the young into debt.At the extremes over half belief they are in the top or that their children are the brightest. tenth by favours measures. In beliefs such as this we have become more stupid than we once were. Slow down, stop it, what is in your interest is what is also in others’ interest. Circumstances of our making In an affluent country we choose the rate of poverty we are prepared to live with. We do this by deciding that a few people can be paid very highly and tax them very low. We do this by deciding that many others should receive minimal benefits. We could collectively decide that there are limits to what the highest paid can be paid. Most people in Itmost countries ofthem theto keep the Those who run large institutions. would affluent then be easier to encourage pay of others below their pay. What it would be socially acceptable to receive in income world made better choices. would change. This is no utopia. It is normality where most people live in most affluent nations. But getting back to normality is difficult when you have become addicted to models of competition. Do all this and it is possible to imagine having safety nets, benefit levels, that most people would be prepared to rely on. Money is not the best metric Mass idleness cannot be reduced without a reduction in prejudice. The ideal of more than 80% of working age adults being paid for their labour is an ideal that puts markets above all else and sees caring for others only of value when done in the market. Why are we trying to get richer? We can now produce far more than we need to consume and enough to selloptions overseas tomost fund more than it iswould safe for usrarely to consume. We are living in Given people be idle the first generation where there are enough material goods for everyone's needs in the UK. choice. They are by just badly shared out. What we also lack is freedom to choose what we do with our time. Most people in work worked far fewer hours one, two or three decades ago. Far fewer were unemployed, sick, or otherwise not economically active of working age then also. Paid work can be better shared out. Unpaid work can be better valued. Again this is not utopia. It is just normality in most other places as nominally rich as we are. Another world already exists Almost everyone could be made better-off if they were not sold (and did not buy) the story that to do well you must have more than others. Running more than one car is an expense worth avoiding. Owning more than one home is not necessary. Private swimming pools are not the luxury they tell the you. If the very rich really did have broadest smile on their faces every minute of every waking hour then perhaps it would be worth trying so hard to join them and do others down on the way. Celebrity magazines and carefully edited television presents an image of people smiling far more often than is humanly positive given cramp and the limits of our facial muscles. Wealth brings fear as well as security. It breeds mistrust within affluent families and a distain for others. How else do you excuse your wealth if you are not someone special? The new squalor of our times is greed. It is not an easy habit to kick. University of Queensland: http://www.bsl.org.au/pdfs/Greg_Marston_Welfare_fraud&fiction_29Nov07_.pdf Mitchell, G. and Dorling, D. (2003). ‘An environmental justice analysis of British air quality’, Environment and Planning A, vol. 35, no 5, pp 909-29. NHS (2007). NHS quality improvement Scotland: Clinical indicators 2007, Glasgow: NHS Scotland. OECD (Organisation for Economic Co-operation and Development) (2007). The Programme for International Student OECD’s latest PISA study of learning Can we aimAssessment to only (PISA), be as unequal skills among 15-year-olds, Paris: OECD OECD (2009). PISA 2006 Report. Paris, Organisation for Economic Co-Operation asTechnical the average OECD country? and Development's technical report on the latest PISA study of learning skills among 15year-olds. (page 145). Is that too much of an aspiration? Rigby, J.E. and Dorling, D. (2007). ‘Mortality in relation to sex in the affluent world’, Journal of Epidemiology and Community Health, vol.61, no 2, pp 159-64. Pearson, K. (1895). ‘Contributions to the mathematical theory of evolution – II. Skew variation in homogeneous material’, Philosophical Transactions of the Royal Society of London, Series A, Mathematical, vol. 186, pp 343-414. Preston, R. (2008). Who runs Britain? How the super-rich are changing our lives. London, Hodder & Stoughton. (page 336). Wells, H. G., J. Huxley and G. P. Wells (1931). The Science of Life. London, Cassell and Company Limited. (page 822). CreditsThe – Slides Benjamin Hennig Wilkinson, R. and K. Pickett (2009). Spirit by Level: Why More Equal Societies Almost Always Do Better. London, Allen Lane. (chapter 8). References