**
POLS 6386 MEASUREMENT THEORY
Sixth Assignment
Due 21 March 2001**

- The aim of this problem is to study the effect that being chosen as a
Vice Presidential running mate has on a Senator's roll call voting record. We are
going to start with Senator Richard Schweiker of Pennsylvania who was selected by
Ronald Reagan to be his running mate in 1976 just prior to the Republican convention.
Download the following roll call data sets:

94^{th}Senate Roll Call Matrix

95^{th}Senate Roll Call Matrix

Combined 94^{th}and 95^{th}Senate Roll Call Matrix

The combined data matrix has one record for eachSenator who served in either or both the 94*unique*^{th}and 95^{th}Senates. In effect, we are treating the two Senates as if they were one Congress. If a member served in both Senates then his record contains both the 1311 roll calls for the 94^{th}plus the 1156 roll calls for the 95^{th}for a total of 2467 roll calls. If a member served in the 94^{th}but not the 95^{th}, then his record has the 1311 votes for the 94^{th}followed by 1156 zeroes (in other words, it is as if he did not vote in the 2^{nd}half of the "Congress"). If a member served in the 95^{th}but not the 94^{th}, then his record has 1311 zeroes for the 94^{th}followed by the 1156 votes in the 95^{th}(in other words, it is as if he did not vote in the 1^{st}half of the "Congress").

*When we use the combined matrix we are assuming that Senators do not change their ideal points between Senates*!

We are going to start by running these three roll call matrices through a large-matrix version of my optimal classification program --**PERFL_2006**. This version has been dimensioned large enough so that we can analyze roll call matrices with up to 21000 roll call votes. Download the program and its "control card" file and place them in the same directory as the roll call votes.

Large Version Maximum Classification Program -- Can be compiled with**gfortran**. (The R Package can be accessed from this page.)

Control Card File for Classification Program

The control card file for a one dimensional scaling looks like this:**SEN9495.ORD NON-PARAMETRIC MULTIDIMENSIONAL UNFOLDING 1 2467 10 19 2 4 20 0.025 3 (3X,9A1,7X,4A1,2X,6A1,5X,3600I1) (I5,1X,19A1,2I5,50F8.3)**- Run
**PERFL_2006**in one, two, and three dimensions on all three roll call matrices. Report the one, two, and three dimensional correct classification percentages and use**Excel**to make a graph of the eigenvalues of the double-centered squared distance matrix computed from the agreement scores from the combined matrix.

- Use
**SPSS**to make a graph of the two dimensional results of all three scalings. In the combined scaling, note that Schweiker is represented as-- one constraining him to be at the same point for both Congresses, one for his voting in the 94*three points*!^{th}only, and one for the 95^{th}only. Highlight Schweiker's ideal points on all of your plots.

- Put the coordinate output files into
**Excel**and compute the correlations between the corresponding two and three dimensional solutions for all three matrices. Note that this will require some ingenuity on your part because not all the Senators served in both Senates and note that the rows in the combined file are slightly different from the rows in the 94^{th}and 95^{th}files. Report the correlations*one dimension at a time for each dimensionality using the format below*:**One Dimension Scalings PERF 1d KYST 1d WNOM 1d ------------------------------------------------ PERF 1d 1 KYST 1d -0.92682 1 WNOM 1d -0.95408 0.990908 1 Two Dimensional Scalings 1 PERF 2d 1 KYST 2d 1 WNOM 2d ------------------------------------------------- 1 PERF 2d 1 1 KYST 2d 0.99034 1 1 WNOM 2d 1 0.99034 1 2 PERF 2d 2 KYST 2d 2 WNOM 2d ------------------------------------------------- 2 PERF 2d 1 2 KYST 2d 0.592688 1 2 WNOM 2d 1 0.592688 1**

- Run
- Download
**HOUSYM3.FOR**and its control card file below. It is a large version of the**HOUSYM3**program we used in previous homeworks to compute an agreement score matrix.

HOUSYM3.F95 -- FORTRAN 95 Agreement Score Program. Can easily be compiled with**gfortran**.

symstrt3.dat -- Control Card File for HOUSYM3 Program

Use**HOUSYM3**to get an agreement score matrix for the 94^{th}, 95^{th}, and combined 94^{th}and 95^{th}Senates. Run the three agreement score matrices through**KYST**. Report the one, two, and three dimensional**STRESS**values for each matrix and use**Excel**to compute the correlations between the two and three dimensional coordinates from**KYST**with those from**PERFL_2006**.

- In prepartion for our project to study whether or not Senator Lieberman of
Connecticut changed his voting behavior because of his selection as former Vice President
Gore's running mate in 2000, you need to download all the Senate roll call votes taken to date
from:

U.S. Congress Web Site (Thomas)

Using your browser, save the roll call vote web pages as**text**files! Using**Epsilon**inset the following text at the very top of each web page:

******ROLL CALL NUMBER******

followed by the vote number*twice*so it looks like this:

This is the 12******ROLL CALL NUMBER**** 12 12 Vote Number 12 U.S. Senate Roll Call Votes 107th Congress - 1st Session (2001) as compiled through Senate LIS by the Senate Bill Clerk under the direction of the Secretary of the Senate**^{th}roll call vote. Note that the blank lines will be present when you save the web page as a text file (don't worry about the blank lines).

Download the 105^{th}Senate roll call votes

105^{th}Senate Roll Call Data

and run**PERFL_2006**in one dimension (there are 612 roll call votes). Take the rank ordering (remember that in**PERF25.DAT**the Senators are shown first sorted in rank order) and find the cutpoint that best classifies the Ashcroft confirmation vote (number 8, 1 February 2001). Note that you are using the 105^{th}Senate to classify a vote in the 107^{th}so that there will be a number of missing Senators. Compare your results to those I have posted on my website under "analyses of recent politics." Based upon his rank position in the 105^{th}, should Senator Lieberman have voted for Ashcroft? Turn in all of your calculations.