Core Concepts
The organization of scientific concepts, characterized by their core/periphery structure, is associated with the growth of scientific knowledge through innovation and consensus.
Abstract
This study examines the conceptual structure and dynamics of scientific knowledge in the physical and social sciences over several decades. Using semantic network analysis, the authors map the core/periphery organization of scientific concepts and analyze how these structures change over time.
Key findings:
The conceptual cores become more rigid over time, with decreasing churn of core concepts and a declining relative size of the cores. This suggests that as scientific fields develop, the core set of concepts becomes more established and resistant to change.
The number of conceptual cores shows different trends across the physical and social sciences, with a slight decrease in the social sciences and an overall increase in the physical sciences. However, both fields exhibit an increasing concentration of concepts around a smaller number of dominant core/periphery structures.
Innovation, measured by the disruptiveness of scientific works, is associated with conceptual structures that have higher churn of core concepts, relatively larger cores, and fewer cores. This suggests that prominent but less rigid conceptual structures may provide an environment more conducive to innovative ideas.
Scientific consensus, measured by the use of consensus-related words, is associated with a decrease in the churn of core concepts and the number of cores. This indicates that as consensus builds within a field, the core concepts become more stable and the number of distinct conceptual frameworks decreases.
Overall, the findings suggest that the organization of scientific concepts is an important factor in the growth of scientific knowledge, with the specific mechanisms varying across time and disciplines.
Stats
"We find the number of fingers observed in our simulations to be in excellent agreement with experimental observations and a linear stability analysis reported recently by Smolka and SeGall (2011)"
The number of fingers observed in simulations is in agreement with experimental observations.
Quotes
"As early as the 1960s, pioneering sociologist of science de Solla Price observed a doubling in the growth of journals every 13 years and abstracts every 15."
"Classical perspectives, for instance, tend to suggest that scientific knowledge grows through the expansion and refinement of a conceptual core; other views see science as more pluralistic, suggesting that the growth of knowledge comes through the proliferation of competing alternatives, manifesting in the form of multiple cores or research programs."
"Churn may stimulate creative thinking, and allow researchers to develop ideas that disrupt a scientific domain."