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Schema of a Typical AC Protocol

A single trial typically requires at least four people:

1. Receiver A person who will register their impressions of the target.
2. Monitor An individual who, while blind to the target, will assist the Receiver to respond.
3. Assistant The person who will randomly select a target.
4. Analyst A person who will conduct the assessment of the trial data while remaining unaware of the experimental details.

Suppose a trial begins at 10:00 hours.

10:00 — A monitor and a receiver are sequestered in the laboratory.
10:05 — An assistant randomly selects one target from a set of pre-defined targets.
10:10 — Session begins.

At this point,both the monitor and receiver are completely "blind" to the target choice; thus the monitor is free to encourage the receiver to draw and write his/hers impressions of the selected target.

10:25 — Data collection ends.

The data are secured, and the assistant is asked to provide the target as feedback.

10:30 — The session ends after a complete de-brief of the experience and a comparison of the data with the selected target.

Subsequently the data are assessed by an analyst who is blind to all experimental details.

We emphasize that this in not a complete description of a protocol but merely an outline of the way in which data are collected and analyzed.

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