At the start of the twentieth century, early experimental psychologists relied heavily on introspection to investigate conscious mental states. However, in the 1910s, a new movement rejected this subjective focus, arguing that a true science of psychology must limit itself to the study of observable and measurable behavior. This behavioral focus remained dominant for decades until the 1950s, when the development of digital computers prompted a massive transition toward studying internal mental processes using information-processing models.
Using the text above, explain what is meant by a paradigm shift.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.