The Census and Social Science
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House of Commons Science and Technology Committee The Census and social science Third Report of Session 2012–13 Report, together with formal minutes, oral and written evidence Additional written evidence is contained in Volume II, available on the Committee website at www.parliament.uk/science Ordered by the House of Commons to be printed 12 September 2012 HC 322 [Incorporating HC 1666–i to -iii, Session 2010–12] Published on 21 September 2012 by authority of the House of Commons London: The Stationery Office Limited £0.00 Science and Technology Committee The Science and Technology Committee is appointed by the House of Commons to examine the expenditure, administration and policy of the Government Office for Science and associated public bodies. Current membership Andrew Miller (Labour, Ellesmere Port and Neston) (Chair) Caroline Dinenage (Conservative, Gosport) Jim Dowd (Labour, Lewisham West and Pinge) Gareth Johnson (Conservative, Dartford) Stephen Metcalfe (Conservative, South Basildon and East Thurrock) Stephen Mosley (Conservative, City of Chester) Pamela Nash (Labour, Airdrie and Shotts) Sarah Newton (Conservative, Truro and Falmouth) Graham Stringer (Labour, Blackley and Broughton) Hywel Williams (Plaid Cymru, Arfon) Roger Williams (Liberal Democrat, Brecon and Radnorshire) The following members were also members of the committee during the parliament: Gavin Barwell (Conservative, Croydon Central) Gregg McClymont (Labour, Cumbernauld, Kilsyth and Kirkintilloch East) Stephen McPartland (Conservative, Stevenage) David Morris (Conservative, Morecambe and Lunesdale) Jonathan Reynolds (Labour/Co-operative, Stalybridge and Hyde) Powers The Committee is one of the departmental Select Committees, the powers of which are set out in House of Commons Standing Orders, principally in SO No.152. These are available on the Internet via www.parliament.uk Publications The Reports and evidence of the Committee are published by The Stationery Office by Order of the House. All publications of the Committee (including press notices) are on the Internet at http://www.parliament.uk/science. A list of reports from the Committee in this Parliament is included at the back of this volume. The Reports of the Committee, the formal minutes relating to that report, oral evidence taken and some or all written evidence are available in printed volume(s). Additional written evidence may be published on the internet only. Committee staff The current staff of the Committee are: Dr Stephen McGinness (Clerk); Jessica Montgomery (Second Clerk); Xameerah Malik (Senior Committee Specialist); Darren Hackett (Senior Committee Assistant); Julie Storey (Committee Assistant); Henry Ayi-Hyde (Committee Office Assistant); and Nick Davies (Media Officer). Contacts All correspondence should be addressed to the Clerk of the Science and Technology Committee, Committee Office, 7 Millbank, London SW1P 3JA. The telephone number for general inquiries is: 020 7219 2793; the Committee’s e- mail address is: [email protected]. The Census and social science 1 Contents Report Page Summary 3 1 Introduction 5 Early Census activity in England 5 Beyond 2011 5 Our inquiry 6 2 How the census is used currently 8 Social science in central government 8 Use of census by public bodies 9 Use of the census by industry 11 3 Value of the census 13 National coverage 13 Longitudinal studies/the advantage of comparisons over time 14 Detailed local information 15 Reliance on official information/difficulties of combining other sources 16 Census data as reference point 17 Disadvantages of reliance on census data 17 Timeliness 17 The impact of the census on the ONS 18 4 A future without a census? 20 Existing alternatives to the census 20 Concerns about the future availability and reliability of administrative sources 24 Future developments 27 Conclusions and recommendations 29 Formal Minutes 33 Witnesses 34 List of printed written evidence 34 List of additional written evidence 35 List of Reports from the Committee during the current Parliament 36 The Census and social science 3 Summary We undertook an inquiry into the proposed changes to the census not to consider whether there should or should not be another census but to consider the use of the data from the census by the Government, whether there were elements of the census that would be irreplaceable by other means and if the business of Government would be seriously impacted if census data was lost or changed. We are committed to the principle of the Government basing its policy on evidence and social science based evidence needs to be just as robust as that from any other science. Social science in Government is strategically coordinated by a heads of analysis group and social scientists in Government departments are supported by a cross departmental resource based in the Treasury. We were concerned however that there was no clear voice, like the Chief Scientific Advisor provides in other sciences, to influence at a Ministerial level. We are more concerned about the lack of a Minister who could answer for Government as a whole whether social science provision was adequate and whether the data from the census and other sources was fit for purpose. We found that there were many other social science surveys that would appear to overlap with the census. We were informed that these surveys could not replace the census and indeed depended on census data as a source of calibration. This dependence would appear to be due to the fact that there is no other survey that can approach the breadth of the census. We did hear of good use being made of non-census surveys to provide equivalent data in a number of areas in a much shorter timescale than can be achieved through the use of a decadal census. There are a number of other key qualities of the census could not be replaced by other means. Census data provides a snapshot of the whole country at a moment in time which is invaluable to historians and to detect trends in the recent past; it also allows comparisons to be made of different areas in the country more accurately. The census also provides a means to recruit to longitudinal studies which, we are convinced, are the envy of social scientists in other countries. A wide variety of organisations and local historians told us that they depend on the availability of census data as they could not afford to finance any equivalent studies. The key disadvantages of the census would seem to be the timeliness of the data. Census data is always at least two years out of date and up to twelve years just prior to a census day. In areas where the population changes rapidly census data would rapidly become non- representational. There is also a concern that the very presence of such an obvious dataset means that new and innovative solutions are not sought for social science as they can lean on census data whether or not it is the best solution. We have concerns that social science could suffer if the census was to be discontinued without serious consideration as to how this data would be replaced. We have been told that surveys and administrative data can be used effectively but we have concerns that this would not easily scale to a nationwide coverage. There would need to be a serious consideration of how administrative data could be brought to a national standard to allow 4 The Census and social science it to be more easily used as a replacement for census data. A particular concern would be recruitment to existing longitudinal studies. However, we anticipate that the absence of a census would also potentially stimulate a considerable amount of innovation in social science and examination of how to produce social data of an equivalent standard, but to much quicker timescales, than the current census data. The Census and social science 5 1 Introduction Early Census activity in England 1. The ominous title of the Domesday Book often seems to obscure the fact that it was a simple census activity. The website of the Office for National Statistics (ONS) describes the Domesday book of 1086 as the “first thorough survey of England”, adding: The Domesday Book paints a very detailed picture of life in Norman England. So in these terms it can be thought of as our first census. But unlike the modern census, it did not provide an accurate count of the people living in England then. Also unlike the modern census, Domesday’s purpose was to establish the ownership of assets, so that owners could be taxed on these possessions.1 Thus the first recognisable census in England provides some insight into what was important in that society: the King wished to know what tax revenues might be raised from the populace. Arguably, every subsequent census has revealed what the government of the day thought it important to know at that time. 2. The incentive for the modern census was not money but the fear of overpopulation. This fear was fuelled by the publication in 1798 of Thomas Malthus’s Essay on the principle of population, which suggested that population growth would soon outstrip supplies of food and other resources. Concerned at this alarmist view of the future, people began to see the need for a census.2 Parliament passed the Census Act in 1800 and the first official census of England and Wales was held on 10 March 1801. Since then there has been a census every ten years except for 1941, during the Second World War. 3. There have been constant changes to the questions asked in the census with more and more detail required to provide greater ‘granularity’3 for a population that is probably subject to greater and faster change than ever before. 4. There is also a hugely different social science context where academics, charities and commercial organisations are all collecting and using social data to better serve their communities and customers.