The files contain the data from the experiments reported in Chapter 2. The data were
originally presented in “An Experimental Study of Storable Votes” by Casella, Gelman,
and Palfrey, 2006, Games and Economic Behavior, 57:123-154.
Each row contains the observation of one subject in one round of voting. The columns are
described as follows:
matchId: The first paid match is coded either 1 or 2. In all cases, the paid matches were
preceded by two practice matches not used in the data analysis.
roundId: Each match has either two or three rounds, corresponding to the two or three
consecutive proposals that a committee votes on. The rounds (proposals) are coded with
progressing numbers, starting with either 0 or 1.
groupId: In each match, the subjects were randomly shuffled into several committees.
The committees are labeled by numbers, 0,1,2, etc.
clientId: Specifies a particular subject in the session. ClientId assignments remained
unchanged throughout a session, so client 1 in match 1 is the same person as client 1 in
match 2 of that session, etc.
payoff: Specifies the payoff to a subject for that match and round. It is either 0 or the
absolute value of the subject’s proposal value, depending on whether his side won or lost.
In some sessions, the computer program did not compute the payoff and it is not included
in the output file. It can be computed by checking whether the subject’s side won or lost
the vote (in case of tie, attribute to each subject half of his absolute value).
votes: Indicates how many votes were cast by this subject for or against the proposal in
the current match and round. Negative votes are votes against the proposal, positive votes
are votes for the proposal. In some sessions, the votes are recorded as “votes for/votes
against”.
value: Indicates the difference in payoff between the proposal passing and failing. A
negative value indicates that the subject is opposed to the proposal; a positive value
indicates that the subject is in favor. If the value is negative, then the votes are always
negative; if it is positive, then the votes are always positive.