Final answer:
The first psychological laboratory was developed by Wilhelm Wundt in 1879 in Leipzig, Germany, marking a pivotal moment in the emergence of psychology as a scientific discipline.
Step-by-step explanation:
In 1879, the first psychological laboratory was developed by Wilhelm Wundt in Leipzig, Germany. Wilhelm Wundt is often credited as one of the founders of psychology, marking the separation of psychology from philosophy. His laboratory at the University of Leipzig was where he and his students used scientific methods to study reaction times and other mental processes, laying the groundwork for psychology as an empirical science.