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\section{Consent Form}
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\label{app:consent}

\hrule
\vspace{2em}

\begin{center}
\LARGE\bf
CONSENT FORM \vspace{-.1cm}\\
\Large\bf
Data Collection and Analysis \\
\large\bf
Principle Investigator: James Allen
\end{center}\vspace{-.2cm}

We are interested in building a computer system that can help people
in simple problem solving tasks using language.  We are collecting some
conversations, using a person to simulate the system, in order to
better understand the task.

If you agree to participate in this study, you will be given problems
to solve with the help of the ``system''.  The ``system'' will have
reasonably up-to-date information about the state of the world and you
can ask it questions at any time.  You, however, have the final say in
what actions are to be included in your plan.  The system will keep
you informed of the situation when asked, provide you with information
about the time required for manufacturing, loading, or shipping goods,
and it will also try to help you, whenever possible, by anticipating
problems that arise in your plan.

During the experiment, you will wear headphones and be speaking into a
high quality microphone.  The dialogs will be audio-recorded onto
digital tapes.  A picture of you will be taken to verify the
microphone placement.  During the experiment, you will not have visual
contact with the system, nor will the experiment be video-taped.

The experiment carries no risk to you.  The ``system''
role will not be competing against you, but is there to help in the
problem solving endeavor.  Also, the only benifits that you
will receive is the satisfaction of solving the tasks.  There is
no monetary payment for participating.

By participating in this experiment, you agree to allow us to analyze
and distribute the recorded conversations, but you will not be
identified as the speaker in any way.  Your participation is
voluntary.  At any time, you can withdraw with no change in
circumstance.
\vspace{.3cm}

\noindent
\underline{\makebox[3in]{}} \vspace{-.2em} \\
Print Name \vspace{.2cm}

\noindent
\underline{\makebox[3in]{}} \ \ \ \underline{\makebox[1in]{}} \vspace*{-.2em} \\\makebox[3in][l]{Signature} \ \ \ \makebox[1in][l]{Date} \vspace{.2cm}

\noindent
\underline{\makebox[3in]{}} \ \ \ \underline{\makebox[1in]{}}
\vspace*{-.2em} \\
\makebox[3in][l]{Principal Investigator} \ \ \ \makebox[1in][l]{Date}

