Lashley was also a pioneer in challenging the way we think about human and animal behavior in terms of our biology. Lashley found with further experimentation that behavior is not just a reaction to a stimulus but a large and complicated series of connections made in the brain. An input of information or stimuli occurs and connections occur in the brain which leads to the output or behavior. Researchers also expanded the study of working memory, central executive, and further research on memory deficits and learning.