This manuscript introduces BITTSy, the Behavioral Infant & Toddler Testing System. This software system is capable of running the headturn preference procedure, preferential looking, conditioned headturn, and visual fixation/habituation procedures. It uses only commercial-off-theshelf (COTS) hardware to implement the procedures in an affordable and space-efficient setup. The software package, example protocols and data sets, and manual are freely available and downloadable from go.umd.edu/BITTSy, making this entire set of procedures available to resource-limited labs. Researchers can easily use BITTSy at multiple sites in a uniform manner, resulting in a standardized, powerful research tool that can enhance cross-site research collaborations.

此手稿介绍BITTSy，所述乙ehavioral我nfant＆Ť oddler Ť esting SY干。该软件系统能够运行转向偏好程序、优先寻找、条件转向和视觉固定/习惯程序。它仅使用商用现货 (COTS) 硬件以经济实惠且节省空间的设置来实施这些程序。软件包、示例协议和数据集以及手册可从 go.umd.edu/BITTSy 免费获取和下载，使这整套程序可供资源有限的实验室使用。研究人员可以在多个站点以统一的方式轻松使用 BITTSy，从而形成一个标准化、强大的研究工具，可以加强跨站点研究合作。