PyHab: Open-source real time infant gaze coding and stimulus presentation software.

Infant looking-time paradigms often use specialized software for real time manual coding of infant gaze. Here, I introduce PyHab, the first open-source looking-time coding and stimulus presentation solution designed specifically with open science in mind. PyHab is built on the libraries of PsychoPy (Peirce, 2007). PyHab has its own graphical interface for building studies and requires no programming experience to use. When creating a study, PyHab saves a folder that contains all of the code required to run the study and all of the stimuli, making each experiment a self-contained, easily shared package. This feature guarantees the ability to replicate a PyHab experiment exactly as it was run. PyHab also has several features designed to support rigorous methodology, such as experimenter blinding and automatic stimulus control. In addition, because it is open-source, PyHab can be modified and improved not only by its developer but by anyone who knows Python.