TABLE 3.

Checklist for reporting pupil studies

	YES	NO
Participants
Characteristics of participants, including age, gender, education, racial composition
Participants excluded from analyses
Screening for ophthalmological exclusions and pupillary motility
Screening for potential pharmacological interactions
Time of recording, season
Recording characteristics
Model of pupil or eye-tracking instrument and setup conditions Sampling rate (e.g., 50, 60, 120 Hz)
Resolution/precision of raw measurements (e.g., nearest 0.05 mm)
Initial output format—mm or arbitrary units
Calibration of pupil diameter in mm
Stimulus and timing parameters
Characteristics of auditory, tactile, or olfactory stimuli
Ambient light assessment: Luminance in cd/m2
Visual stimuli:
Luminance in cd/m2
Size of visual stimuli, distance from the eye, visual angle
Background or baseline stimulus field characteristics
Color, pixel intensity, and pixel contrast of baseline and experimental stimuli
Data reduction
Conversion of arbitrary units to mm
Detection of blinks and other artifacts
Type of interpolation
Filtering or smoothing methods
Mean number of trials per condition
Mean number or percent of trials included/excluded
Measurement procedures
Description of measures selected for analysis (e.g., peaks, averages, etc.), including rationale for time windows
Duration of prestimulus baseline
Results
Descriptive and inferential statistics
Rationale for analyses using %, ratios, or other transformations
Baseline values (in mm) for analyses using %, ratios, or other transformations
Statistical models and procedures described
Results reported with test statistics, in addition to p values
Appropriate adjustment for multiple comparisons
Figures
Waveform plots for important conditions (include tick marks for time, events; ordinate labeled in mm)