Final answer:
Wilhelm Wundt is credited with creating the first psychology laboratory in Leipzig, Germany, in 1879, marking a significant transition of the study of the mind into a scientific field.
Step-by-step explanation:
The researcher credited with establishing the first psychology laboratory in Leipzig, Germany, is Wilhelm Wundt. Wundt, often recognized as one of the founders of psychology, conducted groundbreaking experimental research into consciousness and mental processes. In 1879, he set up his laboratory at the University at Leipzig where methods such as measuring reaction times in response to various stimuli were employed. This marked the transition of the study of the mind from a philosophical to a scientific endeavor.
Wilhelm Wundt's work laid the foundation for the field of psychology, and his approach to the scientific study of conscious experience, utilizing tools and techniques such as introspection, were innovative for that time. Wundt's psychological research also delved into cultural aspects with his work on Volkerpsychologie. His influence extended not only through Europe but also globally, as demonstrated by other researchers establishing labs in different parts of the world.