We contend that diagrams are tools not only for communication but also for supporting the reasoning of biologists. In the mechanistic research that is characteristic of biology, diagrams delineate the phenomenon to be explained, display explanatory relations, and show the organized parts and operations of the mechanism proposed as responsible for the phenomenon. Both phenomenon diagrams and explanatory relations diagrams, employing graphs or other formats, facilitate applying visual processing to the detection of relevant patterns. Mechanism diagrams guide reasoning about how (...) the parts and operations work together to produce the phenomenon and what experiments need to be done to improve on the existing account. We examine how these functions are served by diagrams in circadian rhythm research. (shrink)

Biological sciences have strived to adopt the conceptual framework of physics and have become increasingly quantitatively oriented, aiming to refute the assertion that biology appears unquantifiable, unpredictable, and messy. But despite all effort, biology is characterized by a paucity of quantitative statements with universal applications. Nonetheless, many biological disciplines—most notably molecular biology—have experienced an ascendancy over the last 50 years. The underlying core concepts and ideas permeate and inform many neighboring disciplines. This surprising success is probably not so much attributable (...) to mathematical and statistical approaches in molecular biology, but rather to the preponderance of qualitative approaches, especially visualization. Visualizations can be afforded by quantitative research, but usually they rely on both, quantitative and qualitative research. I claim the following three features to be responsible for the unceasing zeal for using visualizations: visual representations facilitate reasoning, images can be cognitively processed in a “fast” manner, and abstractions of visual representations prompt conceptual advances. In summary, visualizations have largely contributed to the success of molecular biology by conveying its concepts to other disciplines, and at the same time, eclipsing mere quantitative approaches. However, visualizations also bear the risk of misinterpretation when traversing neighboring disciplines and even more so when pervading nonscientific domains. (shrink)

Stem cell researchers labor in unpredictable circumstances, beset by uncertainties allied to the study of cellular signaling behaviors. STS research, based primarily on the work of Star, has demonstrated that medical scientists often approach these vicissitudes using a type of phronesis that aims to better qualify the causes of experimental ambiguities, while also identifying optimistic reference points to help guide future research. Knowledge of this type of phronesis is extended by this article, which examines the composition of the three most (...) popular citations allied to the regenerative cellular biology/human-induced pluripotent stem cells literature. When analyzed, these papers afford evidence that the adducement of positive signals begins with sorting and categorizing. This article finds that, when representing the outcomes of this cataloging for peer-review consumption, the authors concerned predicated their observations in a perspicacious rhetoric, which serves to reinforce positive-leaning ascriptions by couching them in images of virtue, fortitude, and due diligence. The research findings presented herewith suggest that adducements of this kind may be anchored in a representational practice that could be described as “modal splicing.” This article contributes to the STS literature by observing connections between modal splicing, perspicacious representation, and knowledge affirmations in hiPSC contexts. (shrink)

The use of motion pictures for research has a long history, of course, but beyond documenting a phenomenon and then projecting it for demonstration, scientists using this technology spent much energy figuring out how to extract information from a strip of film. Understanding film (or audiovisual) analysis is therefore necessary to grasping the relationship between an object of study, moving-image technology, and scientific evidence. This article explores one common technique within that history of film analysis: projecting a frame of the (...) motion picture and then tracing the object of study onto paper, which was especially important for behavioral sciences such as developmental psychology or ethology. Behavior became tangible through a variety of means, but for those who relied on film for their observations, such as developmental psychologist Arnold Gesell, behavior took form at least partly through the process of tracing. Gesell's use of this technique reveals the broader functions of tracing as well as the patterns that emerge from its interplay with other inscriptions in the creation of evidence. How does behavior take form? The practice of tracing provides one answer to this larger question. (shrink)

The use of physical models of molecular structures as research tools has been central to the development of biochemistry and molecular biology. Intriguingly, it has received little attention from scholars of science. In this paper, I argue that these physical models are not mere three-dimensional representations but that they are in fact very special research tools: they are cognitive augmentations. Despite the fact that they are external props, these models serve as cognitive tools that augment and extend the modeler’s cognitive (...) capacities and performance in molecular modeling tasks. This cognitive enhancement is obtained because of the way the modeler interacts with these models, the models’ materiality contributing to the solving of the molecule’s structure. Furthermore, I argue that these material models and their component parts were designed, built and used specifically to serve as cognitive facilitators and cognitive augmentations. (shrink)