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Review by Walter Forrest
Damned
Lies and Statistics: Untangling Numbers from the Media, Politicians,
and Activists
By Joel Best
University of California Press, 2001, 190pp,
$US19.95, ISBN 0520219783
The main
contention of this book is that statistics Ôare products of
social activityÕ and as such are susceptible to errors. Instead
of assuming that statistics are facts that simply exist, readers
are cautioned to be vigilant in their acceptance of their
use. ÔTo sort out the good statistics from the badÕ, Best
counsels his readers to think about three things every time
they encounter a new statistic: who created it, why was it
created, and how was it created? The purpose of this book
is to help readers make sense of their answers to those questions
in order to develop a more critical approach to the interpretation
of statistics.
The book
begins with a brief introduction to the rise of social statistics
and their uses in the construction of social problems. The
book then turns to a discussion of Ôthe most common problemsÕ
concerning the creation and interpretation of statistical
data. These concern the creation of spurious numbers based
on poor definitions (for example, false negatives and false
positives), erroneous and sometimes fraudulent estimates,
the context and wording of questions in public opinion polls,
and sampling error.
Of course,
even accurate statistics can be made erroneous as people interpret
and relay information incorrectly, often unintentionally.
To that end, in one of the more interesting passages of the
book, Best deals with the topic of mutant statistics and describes
the ways in which these numbers are created. These occur by
drawing inappropriate generalisations from a statistic; Ôtaking
a number that means one thing and interpreting it to mean
something differentÕ, confusing the meanings of more complicated
statistics, and compounding errors in subsequent mutations.
The problem
of mutant statistics is neatly illustrated in the book by
the following example. An article published in a scholarly
journal claimed that Ôevery year since 1950, the number of
American children gunned down has doubledÕ. According to this
statistic, even if one child had been Ôgunned downÕ in 1950
the number killed in the year the article was published would
have been 35 trillion. The origin of this mutant statistics
was the much less spurious claim that Ôthe number of American
children killed each year by guns has doubled since 1950Õ.
Simply by trying to repeat the original figure, the anonymous
author had fundamentally transformed its meaning.
Chapter
five looks at some debates over statisticsÑincluding a timely
review of US debates on the collection of the Census. The
book closes by making a case for a more critical approach
to the review and interpretation of numbers based on an appreciation
of Ôthe inevitable limitations that affect all statisticsÕ.
For a
book that argues against the use of spurious evidence to advance
arguments, Damned Lies and Statistics seems to wage a few
arguments without evidence of any kind. From the outset, Joel
Best implies that the use of numbers as social tools encourages
their deliberate misuseÑespecially by ÔactivistsÕ who wish
to draw attention to social problems.
At one
point, the author argues that when forced to make estimates
concerning the numerical extent of social problems (for example,
the number of homeless people, the number of non-reported
crimes), activists will err on the side of exaggeration largely
because they have an incentive to do so. In another section,
it is claimed that in constructing statistical definitions,
those wishing to draw attention to social problems are also
more inclined to support broader definitions that exaggerate
a problem (and are therefore less concerned with false positives
than false negatives).
All of
these claims, including the overall argument regarding deliberate
falsehoods, are made without much supporting evidence. To
me, this detracts from the book, especially because the argument
is not at all necessary. It would have been sufficient for
the author to flag the potential sources of error, noting
some examples of those errors, rather than claim that there
is a systematic tendency by some people to generate certain
types of error. After all, in the interests of a critical
approach, readers should be somewhat sceptical of all statistics.
Those
criticisms aside, the book provides a good overview of the
principal flaws in the development of descriptive statistics
in a very readable and non-technical fashion. It is filled
with numerous examples of bad statisticsÑthough not many examples
of good statisticsÑmaking it a clear guide to what not to
do. For these reasons, it is probably most relevant to those
people who frequently encounter statistical evidence, but
who feel unable to evaluate its veracity.
By contrast,
this book is not likely to interest those readers who have
either studied statistics at some point in their careersÑas
distinct from attending a course on statisticsÑor for whom
statistical scepticism is commonsense, although many of the
examples are entertaining. The sources of errors reviewed
in the book are not new and are covered by most introductory
courses and textbooks on the subject.
Moreover,
the book deals only with Ôthe sorts of statistics typically
addressed in the first week or so of an introductory statistics
courseÕ. The book is also very repetitive and could easily
have made its case more succinctly. I would have preferred
it if, in the space saved by more rigorous editing, the author
had extended his gaze beyond descriptive statistics to look
at the errors involved in inferential statistics. After all,
it is usually with respect to inferential statistics, in which
claims are made about correlation and causal relationships,
that the lies are most damned.
Review
by Richard Grant
Social
Policy, Public Policy: From Problem to Practice
by Meredith Edwards with Cosmo Howard and Robin Miller
Allen & Unwin, 2001, 232 pp, $35, ISBN 1 86448948 0
Social
Policy, Public Policy is a book written by a policymaker for
policymakers. Meredith Edwards, a distinguished public servant
in various social policy portfolios, has compiled four case
studies designed to show the policy process Ôfrom problem
to practiceÕ.
The case
studies are the Youth Allowance (AUSTUDY), the Child Support
Scheme, the Higher Education Contribution Scheme and the Working
Nation programmes. Edwards chooses examples that led to long-term
policy breakthroughs. Not surprisingly, she emphasises the
merit in pursuing the problems that underlay these schemes
and the actual success of bureaucracy in delivering them.
Her intent is clearly to affirm the good that government can
do and more particularly, the pioneering efforts of Australian
administrators in social policy. There are strong grounds
for these claims. A HECS style system, for instance, is unique
in the higher education sector.
The reader
will note more than a tinge of partisanship in the book. All
four case studies are chosen from LaborÕs time in office with
contrasts drawn to the approach of a Liberal administration.
The chapter on higher education is titled HECS and not Fees.
The chapter on the Working Nation programmes employs an analystÕs
quote as Ôa very valuable social experiment which was aborted
for political reasonsÕ (174). In the chapter on the Child
Support Scheme, Edwards underlines the governmentÕs eagerness
to Ômake its mark in moulding public attitudes towards quality
family lifeÕ (58). There is undoubtedly a strong theme throughout
the book that the reforms were pursued, and were successful,
in part because of their ideological character.
EdwardsÕs
main focus, though, is on the mindset and method of policymakers.
Each of the four reforms are presented under the various headings
of Ôhistory and contextÕ, Ôputting the problem on the agendaÕ,
Ôdata and researchÕ, Ôdeveloping optionsÕ, ÔconsultationÕ,
ÔpublicityÕ and ÔevaluationÕ. The nexus of policy and politics
is captured well through this structure. The ability to clearly
identify both the conflict and progression of elite thought
on all four of these complex policy areas is a credit to both
this method and the level of detail.
Unfortunately,
the book lacks the theoretical observations that would attract
a wider audience and give the case studies greater depth.
Edwards does not attempt to weave the first chapterÕs rather
thin consideration of normative policymaking issues into the
case studies. While the accent on the players and the process
is quite appealing, it is at the expense of the policymaking
literature. The work of notable writersÑLindblom, Wildavsky,
North, March and OlsenÑis not considered in light of the case
study findings. On the evidence Edwards presents, there is
cause to question LindblomÕs famous characterisation of Ôthe
science of muddling throughÕ. The impression given from the
four case studies is of a high level of bureaucratic structure
and coordination.
One of
the main conclusions of the book is how policymakers have
successfully balanced equity and efficiency concerns. There
are numerous references to the need for savings. The higher
education tax is pitched in terms of redressing Ômiddle class
welfareÕ given that: ÔNot only had they not benefited personally,
but the majority of Australian taxpayers were, on average,
less well off than those they were supporting through the
provision of ÔfreeÕ tertiary educationÕ (111). The impetus
for the child maintenance payment was the need to reduce sole
parent pension outlays.
Edwards
recognises that the HECS and child support initiatives were
easily saleable to the taxpayer. The funding of labour market
programmes in Working Nation was both more expensive and more
contentious in terms of its effectiveness. Edwards describes
these programs in terms of helping the long-term unemployed
back into work Ôwithin the framework of fiscal responsibilityÕ
(181). Perhaps because of the difficulty in ascertaining their
effectiveness, this spending on labour market programmes has
been a point of major political contention. In terms of the
inputs into the policy process, Edwards makes much of the
contribution of academics. While this is well placed, it is
at the expense of the important contribution of the economic
portfolios in impressing the need for savings. Given EdwardsÕ
characterisation of these social policies as enduring and
innovative achievements, the role of Treasury and Finance
in creating the competitive framework for this innovation
should have received more attention. Such arguments are important
as a rejoinder to Michael PuseyÕs Economic Rationalism in
Canberra. Undoubtedly, the economic portfolios assumed great
power and influence during the Hawke/Keating years, but as
Edwards shows, this was largely to the improvement, not the
detriment of equity.
Overall,
Edwards and her co-editors are to be commended for an original
text. Books on bureaucratic process are not known for their
appeal, but this work should prove useful for those interested
in some of the major public policy reforms of the past 20
years. A rewrite might consider more attention to either the
public policymaking literature or the actual conceptualisation
of the policy reforms. Of course, this depends on the intended
audience.
Review
by Michael Warby
Anti-Liberalism
2000: The Rise of New Millennium Collectivism
by David Henderson
Institute of Economic Affairs, London, 56pp, £7.50, ISBN 0
255 36497 0
I have
always enjoyed David HendersonÕs company, both in person and
in his writing, and the recent publication by the Institute
for Economic Affairs of his 2000 Wincott Lecture, Anti-Liberalism
2000, provides an opportunity for us all to enjoy his company
all over again.
In the
lecture, Henderson once more revisits ideas familiar to us
from his other writings: that claims about the dominance of
economically liberal opinion are greatly overdone, that the
influence of economists is easily exaggerated, that the course
of events cannot be explained by a narrow interest-group view
of public debate, that the persistence of what he calls Ôpre-economicÕ
ideas (or Ôdo-it-yourself economicsÕ) is very important in
explaining the pattern of opinion, that economically liberal
reforms have often come from governments of the centre-left,
that the scope of such reforms is easily exaggerated, that
the tide of opinion moves back and forth. He also sets out
various propositions which he believes are typical of anti-liberal
economic opinion.
Henderson
points out that while there was a deterioration in general
economic performance (particularly unemployment) from the
early 1970s, this cannot be blamed on economic liberalisation
since that did not really get underway until the early 1980s.
He also absolves liberalisation from (amongst other things)
leading to greater volatility, noting that economic growth
performance across the OECD as a whole is more stable after
liberalisation gets underway than in the two decades beforehand.
What
Henderson seeks to delineate is the coming together of interests
and perceptions. In particular, the propagation of two propositions
he judges to be characteristic of what he calls new millennium
collectivism. The propositions are (i) Ôa market economy,
even a well-performing one, is heavily populated with non-beneficiaries
and victimsÕ and (ii) Ôtheir well-being depends on deliverance
from aboveÕ.
While
he notes that the vision is not new, he identifies some new
aspectsÑthe rise of NGOs (non-government organisations), the
widening circle of victims, the rise of new interventions
in the labour market (regulation for equal opportunity, anti-discrimination,
human rights and affirmative action in the workplace), the
scare over globalisation.
He further
identifies a common presumption in all thisÑthe presumption
of injusticeÑand the scale of the aspirations new millennium
collectivism brings forthÑnothing less than a desire to regulate
the globe. Though his main concern is to delineate these ideas
and associated interests, Henderson does provide some critique
of these ideas and considers the state of opinion within the
economics profession itself.
Geoff
HarcourtÕs comments on HendersonÕs lecture, which are included
in the IEA publication, would have undoubtedly been much more
interesting if they concentrated on being comments on what
Henderson said. Unfortunately, much of HarcourtÕs comments
are taken up by clarifying his own position (by my count,
in the space of 2,100 words he uses the world ÔIÕ 60 times,
ÔmeÕ 7 times and ÔmyÕ 5 timesÑthat is, there is some reference
to himself about once every 30 words or so).
Alas,
much of what passes for public debate in the various Anglomorph
countries (as the late Frank Knofelmacher called them) is
precisely aimed at showing that the writer/speaker is a virtuous
sort of person. It is perhaps the most characteristic achievement
of the baby-boomer generation that so many have turned public
debate and much of what passes for scholarship from a public
good (an attempt to find out the truth and to worry at what
makes for a good society and a good life) into a private good
(use of writing and speaking as moral display).
This
may be the most powerful single impetus in generating the
opinion conformity which is particularly stultifying in Australia
but which has baneful effects right around the Anglomorph
world (The Shadow University: The Betrayal of Liberty on AmericaÕs
Campuses by Alan Kors and Harvey Silvergate documents just
how virulent and pernicious the attempt to restrict legitimacy
in debate to being a prerogative of the members of the club
of the virtuous can be).
The ÔClub
VirtueÕ approach to debate is particularly useful for anti-liberalism,
because so much of that is concerned with good intentionsÑperfect
for moral display. Much of anti-liberalism holds that the
effect of policy (or, at least, the policy they agree with)
can be inferred from its intentions. Economic liberals, on
the other hand, tend to be concerned about consequences, a
far more grubby businessÑand one more complex to talk about
than simple intentions, a significant PR disadvantage in the
age of the 20 second grab.
Another
aspect of the culture of virtue is that status is a positional
good, which creates a constant demand to have the status of
being in the moral vanguard. An ever-widening circle of victims
for people to be seen to be concerned about is a natural response
to this ever-present demand.
The word
Ôneo-liberalÕ is a classic in the virtue genre, being a term
of insult rather than analysis. The term has the great advantage
of allowing the writer or speaker to signal that they, of
course, do not share the Ôneo-liberalsÕ (sic) pernicious ideas.
David Henderson is a world away from such intellectual perversions.
He concludes his comments on Geoff HarcourtÕs comments on
a note that any genuinely inquiring intelligence can surely
agree with, at least regarding what philosophers would call
contingent propositions: Ôall our doctrines and ways of thinking
are in a sense provisional: they have to meet the test of
experience in a world that is both highly complex and subject
to unceasing and often unforeseen changesÕ.
As long
as the classical liberal cause can bring forth such ornaments
as the clear-thinking and writing, yet subtle and sophisticated,
mind of David Henderson, it will have intellectual riches
indeed to draw upon. Anti-Liberalism 2000 is another fine
product of that mind for us to enjoy.
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