Issues1980: 1980 Issues Scakes
In basicspace: Recovering a Basic Space from Issue Scales

Issues1980

R Documentation

1980 Issues Scakes

Description

Issue scales from the 1980 National Election Study. The numbers 0, 8, and 9 are considered to be missing values, except for the two abortion scales, where '7' is also a missing value. Hence, it must be recoded as in the example shown below before scaling. The data is used as an example for blackbox().

Usage

data(LC1980)

Value

The data is formatted as an numeric matrix with the following elements.

Issues

matrix, containing reported self-placements along various stimuli on a 7 point Liberal-Conservative scales (with the exception of abortion scales, which are 4 point):

libcon1: Liberal-conservative self-placement on 7 point scale.
defense: Defense spending self-placement on 7 point scale.
govserv: Government service on 7 point scale.
inflation: Importance of inflation self-placement on 7 point scale.
abortion1: Attitude on abortion 4 point scale.
taxcut: Support for tax cut on 7 point scale.
libcon2: Liberal-conservative self-placement on 7 point scale.
govhelpmin: Government aid on 7 point scale.
russia: Attitude towards Russia on 7 point scale.
womenrole: Role of women on 7 point scale.
govjobs: Placement of Democrats on 7 point scale.
equalrights: Support for equal rights on 7 point scale.
busing: Opinion on busing on 7 point scale.
abortion2: Another attitude on abortion on 4 point scale.

Author(s)

Keith Poole ktpoole@uga.edu

Howard Rosenthal hr31@nyu.edu

Jeffrey Lewis jblewis@ucla.edu

James Lo lojames@usc.edu

Royce Carroll rcarroll@rice.edu

Christopher Hare cdhare@ucdavis.edu

Source

American National Election Studies (https://electionstudies.org/)

References

David A. Armstrong II, Ryan Bakker, Royce Carroll, Christopher Hare, Keith T. Poole, and Howard Rosenthal. 2021. Analyzing Spatial Models of Choice and Judgment. 2nd ed. Statistics in the Social and Behavioral Sciences Series. Boca Raton, FL: Chapman & Hall/CRC. doi: 10.1201/9781315197609

Keith T. Poole, Jeffrey B. Lewis, Howard Rosenthal, James Lo, and Royce Carroll. 2016. “Recovering a Basic Space from Issue Scales in R.” Journal of Statistical Software 69(7): 1-21. doi:10.18637/jss.v069.i07

Keith T. Poole. 1998. “Recovering a Basic Space From a Set of Issue Scales.” American Journal of Political Science 42(3): 954-993. doi: 10.2307/2991737

Examples

  ### Loads issue scales from the 1980 ANES.
  data(Issues1980)
  Issues1980[Issues1980[,"abortion1"]==7,"abortion1"] <- 8	#missing recode
  Issues1980[Issues1980[,"abortion2"]==7,"abortion2"] <- 8	#missing recode

   
  Issues1980_bb <- blackbox(Issues1980, missing=c(0,8,9), verbose=FALSE, 
    dims=3, minscale=8)
  
  ### 'Issues1980_bb' can be retrieved quickly with: 
  data(Issues1980_bb)

  summary(Issues1980_bb)

basicspace documentation built on April 4, 2025, 1:26 a.m.