In this chapter, we report five beginning undergraduate students' understanding of the 3-D structure of DNA, and the use of gesture and analogy to enhance their 3-D visualization of DNA structure. Through clinical interview-cum-teaching sessions we first recapitulated their background knowledge of basic biology and chemistry prerequisites. We then proceeded to a microgenetic study of the studen...

Two successive, spatially overlapping human faces were exposed for recognition with SOAs ranging from 20 to 160 msec. The subjects effectively perceived one face, which at short SOAs mostly resembled the first stimulus and with increasing SOAs gradually shifted towards the appearance of the second, dimmer stimulus. These results replicated those from the study by Calis, et al, and extended them...

This article discusses the potential impact of microgenetic theory, as elaborated by Jason W. Brown, on the neurosciences. Since it is based on and incorporates methods and premises from such disparate areas as evolutionary biology, neuropsychology, neurology, the philosophy of mind, and even Whiteheadian process metaphysics, microgenetic theory is not easy to grasp, but it proves to be a theor...

This case study explores how 12-13-year-old students encounter proportional reasoning while working with geometric patterning tasks using concrete materials. The focus is on the students’ use of spontaneous concepts when first dealing such patterns in context collaborative work. Based video recordings a single lesson, microgenetic analysis was performed to identify learning trajectories, starti...

This study aimed to investigate the application of Group Dynamic Assessment (GDA) to writing accuracy of EFL learners and explore whether secondary interactants could benefit from interactions between mediator and primary interactants. The idea of implementing DA (Dynamic Assessment) in dyads seems unworkable since teachers are required to teach the whole class (Guk & Kellog, 2007). Moreover, L...

This study deals with a method to identify displacements on structures using a Microgenetic algorithm (M-GA). We developed the inverse technique using a Micro-genetic algorithm which can make global solution searches possible as opposed to classical gradientbased optimization techniques such as the Least-square method. The technique described in this paper may allow us not only to detect the ba...