This paper presents a cognitive model for the routine evolution of skills in a photocopying task. In the classic study by Agre and Shrager (1990), it was found that although speedup in performance conformed to the power law of practice, microgenetic activities of the subject showed multiple stages of qualitative changes as the subject repeated the same task. The evolution of skills was shown to...

There are plausible academic as well as social indicators that qualitative research has become an indispensable part of the methodological repertoire of the social sciences. Relying upon the tenets of the qualitative approach which require a priority of subject matter over method and a necessary socio-historical contextualization, I reconstruct some aspects of a social history that have shaped ...

In the perceptual retouch theory, masking and related microgenetic phenomena were explained as a result of interaction between specific cortical representational systems and the non-specific sub-cortical modulation system. Masking appears as deprivation of sufficient modulation of the consciousness mechanism suffered by the target-specific signals because of the temporal delay of non-specific m...

Hydatid cyst caused by Echinococcus granulosus is one of the most important parasitic diseases around the world and many countries in Asia, including Iran, are involved with this infection. This disease can cause high mortality in humans as well as economic losses in livestock. To date, several molecular methods have been used to determine the genetic diversity of E. granulosus. So far, identif...

Studies of the perceptual performance of individuals with autism have focused, to a large extent, on two domains of visual behavior, one associated with face processing and the other associated with global or holistic processing. Whether autistic individuals differ from neurotypical individuals in these domains is debatable and, moreover, the relationship between the behaviors in these two doma...

Abstract This paper presents findings from a study that examined the strategies children, who had only been taught part-whole fraction sub-construct at school, used for finding associated with solving varied partitive quotient problems. A qualitative, microgenetic research design was involving nine year 5 (aged 9–10) children engaged in eight individual task-based interviews over 6-week period....