Experimenters should arrive at the lab at least 30-minutes prior to the experiment,
and earlier if set-up circumstances warrant it.
Experimenters must block off enough time to allow for preparation,
plus the actual conduct of the experiment, subject payments, and cleanup time.
Before an experimental session, experimenters must check each participant’s
Princeton University student ID card and match it with the information in the signup
sheet. All PExL participants must be registered Princeton University students.
Login procedures at the start of the experiment must be done so that identifying
information is not recorded by the computer. To facilitate this, we ask that participants use
their recruiting platform ID to log in to any experimental software. This will also allow
experimenters to match experimental data with pre-screening information available
through recruiting platform. Experiments run by pencil and paper should not have
identifying information on any subject’s recording forms.
Subjects may not use the computers for general use such as browsing, email, or
searching directories. It is the responsibility of the experimenter to monitor this.
Subjects must be paid in private and must leave the lab immediately after being paid.
All recruited participants who show up in time for the posted experiment are entitled to
receive a show-up fee of $7.00. For any subject who participates in the experiment,
their earnings during the experiment are added to their show-up fee. Negative earnings
during an experiment may not be subtracted from the show-up fee. The standard lab
payment for on-time extras is $7.00. Experimenters are not obliged to pay show-up fees
to late-arriving extras. Show-up fees in excess of $15.00 require prior approval from
Subjects, extras, no-shows, and payment information must be recorded in PExL's record book.
information about every session conducted at PExL (including failed sessions) must be
filled out in PExL’s record book, located in the lab’s experimenter space, after the
session is completed.
Any unusual or inappropriate circumstances must be reported to PExL’s director.
Files should be moved off of local machines and off PExL’s main computer as soon
as possible. Any files an experimenter leaves on a local machine or on PExL’s main
computer may be deleted without notice. PExL is not responsible for lost files.
PExL makes no guarantees regarding equipment, programs, documents, or other
materials in the computer lab. The lab is not responsible for loss of data due
to faulty programs or equipment.
Report any PC or printer problems, such as paper jams, toner replacement,
backed-up print jobs, etc. to the PExL Administrator. Please do not attempt to fix
any lab equipment on your own.
No food, drink, or tobacco is allowed in the lab at any time. Experimenters are
responsible for enforcing these rules. Mobile phone usage in the laboratory is
discouraged and may also be banned by experimenters.
Exceptions to any of these policies for a particular experiment require the advance
permission of the director.
Please consider updating your browser.
This site relies on standards from 2017 and later.
Your browser may exhibit rendering and formatting issues and
you may encounter reduced functionality.