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Predicting Party Sizes: The Logic of Simple Electoral Systems

Rein Taagepera

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.001.0001
Subject:
Political Science, Democratization

For a given electoral system, what average number and size distribution of parties can we expect? This book makes specific predictions that agree with world averages. The basic factors are assembly ... More


The Mean Duration of Cabinets

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0010
Subject:
Political Science, Democratization

Again the quantity to watch is the ‘seat product’. The inverse square law of cabinet durations says that the mean cabinet duration in a country is approximately forty-two years divided by the square ... More


How to Simplify Complex Electoral Systems

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0011
Subject:
Political Science, Democratization

Resistance to simplifying a complex electoral system is at its least when the existing number and size of parties are not altered. The existing effective number of parties is most likely to be ... More


The Institutional Impact on Votes and Deviation from PR

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0014
Subject:
Political Science, Democratization

Using nothing but the product of assembly size and district magnitude, a quantitatively predictive logical model allows us to estimate the average effective number of parties based on votes. Average ... More


Thresholds of Representation and the Number of Pertinent Electoral Parties

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0015
Subject:
Political Science, Democratization

The nationwide threshold of minimal representation is the average vote share needed to win one seat in the assembly. It is close to 38% divided by the square root of the seat product (assembly size ... More


Electoral Systems—Simple and Complex

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0003
Subject:
Political Science, Democratization

To allocate seats to candidates or parties, even a simple electoral system must specify at least the following: the total number of seats in the assembly (assembly size); the number of seats ... More


Openness to Small Parties: The Micro‐Mega Rule and the Seat Product

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0006
Subject:
Political Science, Democratization

The micro-mega rule says that for representation of small parties, it helps to have large assembly sizes, large district magnitudes, and large quotas or large gaps between divisors in seat allocation ... More


The Duvergerian Agenda

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0007
Subject:
Political Science, Democratization

Starting with the characteristics of the electoral systems, the ‘Duvergerian agenda’ aims at predicting the average seat and vote share distributions of parties, the effective number of parties, and ... More


The Number of Seat‐Winning Parties and the Largest Seat Share

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0008
Subject:
Political Science, Democratization

The quantity to watch is the ‘seat product’ — the product of the assembly size and district magnitude. The number of parties represented in the assembly is approximately the fourth root of the seat ... More


Seat Shares of All Parties and the Effective Number of Parties

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0009
Subject:
Political Science, Democratization

As with Chapter 8, the ‘seat product’ is the important quantity to watch. The effective number of parties represented in the assembly is approximately the sixth root of the seat product. The average ... More


Introduction to Part I

Michael J. White

in The Continuous and the Discrete: Ancient Physical Theories from a Contemporary Perspective

Published in print:
1992
Published Online:
October 2011
ISBN:
9780198239529
eISBN:
9780191679940
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198239529.003.0010
Subject:
Philosophy, Ancient Philosophy, Philosophy of Science

Part I of this study closely examines both Aristotle's analysis of the physical properties of spatial magnitude, time, and locomotion, and the metaphysical view underlying this analysis. At the heart ... More


Introduction to Electoral Systems

Michael Gallagher and Paul Mitchell

in The Politics of Electoral Systems

Published in print:
2005
Published Online:
February 2006
ISBN:
9780199257560
eISBN:
9780191603280
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/0199257566.003.0001
Subject:
Political Science, Comparative Politics

This chapter establishes the importance of the electoral system as the central political institution in representative democracy. It discusses the dimensions of electoral systems, such as district ... More


Chile: The Unexpected (and Expected) Consequences of Electoral Engineering

Peter M. Siavelis

in The Politics of Electoral Systems

Published in print:
2005
Published Online:
February 2006
ISBN:
9780199257560
eISBN:
9780191603280
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/0199257566.003.0021
Subject:
Political Science, Comparative Politics

Chile’s binomial open-list PR system was selected by the Pinochet regime as the most likely to optimise the parliamentary strength of the authoritarian right given its level of electoral support. The ... More


Stevens' Power Law

Donald Laming

in The Measurement of Sensation

Published in print:
1997
Published Online:
January 2008
ISBN:
9780198523420
eISBN:
9780191712425
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198523420.003.0005
Subject:
Psychology, Cognitive Neuroscience

This chapter introduces Stevens' direct methods of magnitude estimation, magnitude production, and cross-modality matching. It summarizes Stevens' estimates of exponent values for twenty-four ... More


Why Stevens' Law is a power law

Donald Laming

in The Measurement of Sensation

Published in print:
1997
Published Online:
January 2008
ISBN:
9780198523420
eISBN:
9780191712425
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198523420.003.0011
Subject:
Psychology, Cognitive Neuroscience

This chapter explains why Stevens' Power Law is a power law, rather than some other kind of relation. If the stimulus values are chosen in a geometric series and participants are induced to judge ... More


Descriptive Representation: Electing Women in Latin America

Leslie A. Schwindt-Bayer

in Political Power and Women’s Representation in Latin America

Published in print:
2010
Published Online:
September 2010
ISBN:
9780199731954
eISBN:
9780199866571
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199731954.003.0002
Subject:
Political Science, Comparative Politics

Why do more women get elected to Latin American legislatures today than 30 years ago and why are more women elected in some countries than others? This chapter examines how formal representation ... More


The Measurement of Sensation

Donald Laming

Published in print:
1997
Published Online:
January 2008
ISBN:
9780198523420
eISBN:
9780191712425
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198523420.001.0001
Subject:
Psychology, Cognitive Neuroscience

‘Sensation’ is the subjective experience of a physical stimulus. This book traces the sources of two ideas how to measure sensation — Fechner's Law and Stevens' Power Law — and examines the evidence ... More


Judging relations between sensations

Donald Laming

in The Measurement of Sensation

Published in print:
1997
Published Online:
January 2008
ISBN:
9780198523420
eISBN:
9780191712425
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198523420.003.0009
Subject:
Psychology, Cognitive Neuroscience

Magnitude estimation experiments show only that equal ratios of physical magnitudes are subjectively equivalent — so it may be that participants are actually judging the ratio between pairs of ... More


The Cerebral Cortex and Memory

Howard Eichenbaum and Neal J. Cohen

in From Conditioning to Conscious Recollection: Memory systems of the brain

Published in print:
2004
Published Online:
January 2008
ISBN:
9780195178043
eISBN:
9780199871223
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195178043.003.0004
Subject:
Psychology, Cognitive Psychology

This chapter begins by summarizing the evidence regarding functional specialization of areas of the cerebral cortex for specific perceptual, motor, and cognitive functions. It reviews evidence that ... More


Core Cognition: Number

Susan Carey

in The Origin of Concepts

Published in print:
2009
Published Online:
September 2009
ISBN:
9780195367638
eISBN:
9780199867349
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195367638.003.0004
Subject:
Psychology, Cognitive Psychology, Developmental Psychology

This chapter lays out the evidence for two distinct systems of core cognition with numerical content—analog magnitude representations of number and parallel individuation of small sets— contrasting ... More


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