Porac Test of Eye Dominance Test

Technical Manual

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com), Millisecond

Created: January 29, 2020

Last Modified: January 29, 2023 by K. Borchert (katjab@millisecond.com), Millisecond

Background

This script implements an adaption of the Porac Test of Ocular Dominance as used by the Behavioural Laterality Battery (Parker et al, 2020)

References

Behavioural Laterality Battery:

Adam J. Parker , Zoe V. J. Woodhead , Paul A. Thompson & Dorothy V. M. Bishop (2020): Assessing the reliability of an online behavioural laterality battery: A pre-registered study, Laterality, DOI: 10.1080/1357650X.2020.1859526 To link to this article: https://doi.org/10.1080/1357650X.2020.1859526

https://gorilla.sc/openmaterials/104636

Porac Test:

Porac, C., & Coren, S. (1976). Psychological bulletin, 83, 880. https://doi.org/10.1037/0033-2909.83.5.880

Duration

1 minutes

Description

Participants are asked to determine their ocular dominance by using their thumb or index finger and centering them on a far away object. Then they are asked to close their left eye and then the right eye to observe the location of the object: the eye that keeps the object stationary is defined as the 'dominant' eye

Instructions

provided by Parker et al (2020)
https://gorilla.sc/openmaterials/104636

Summary Data

File Name: eyedominancetest_poractest_summary.iqdat' (Inquisit Lab: one data file per participant)

Data Fields

Name	Description
inquisit.version	Inquisit version number
computer.platform	Device platform: win \| mac \|ios \| android
startDate	Date the session was run
startTime	Time the session was run
subjectId	Participant ID
groupId	Group number
sessionId	Session number
elapsedTime	Session duration in ms
completed	0 = Test was not completed 1 = Test was completed

Raw Data

File Name: eyedominancetest_poractest.iqdat

Data Fields

Name	Description
date	Date the session was run
time	Time the session was run
subject, group, session	With the current subject/groupnumber/session id
build	Inquisit version number
q*_response	Response given (in assigned values) Scale: RIGHT, LEFT, DON'T KNOW
q*_latency	How much time (in ms) the participant spent on the surveyPage with this particular question (the last time this particular surveyPage was visited)