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

Description Usage Value Author(s) Source See Also Examples

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().

1	data(LC1980)

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.

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

American national Election Study. http://www.electionstudies.org/

Also availble from Keith Poole. http://voteview.com/

' 'blackbox', 'summary.blackbox'.

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

### This command conducts estimates, which we instead load using data()
# Issues1980_bb <- blackbox(Issues1980,missing=c(0,8,9),verbose=FALSE,dims=3,minscale=8)
data(Issues1980_bb)

summary(Issues1980_bb)