The purpose of this article is to demonstrate how the method of meaning implication discourse analysis can be applied in the context of online collaborative refl ective practice of student teachers. The method was developed to identify knowledge building in networked contexts. It derives from the model of meaning implication developed by Piaget, and the model of “schematization” proposed by Gri...

The purpose of the paper is twofold. I first outline a philosophical theory of concepts based on conceptual role semantics. This approach is explicitly intended as a framework for the study and explanation of conceptual change in science. Then I point to the close similarities between this philosophical framework and the theory theory of concepts, suggesting that a convergence between psycholog...

Approaches to the teaching and learning of a chosen topic in geometry can be located somewhere between what are sometimes perceived as two extremes. One such extreme is characterised as “intuitive”; the other as “formal” or “axiomatic”. There seems to be a number of ways of looking at the relationship between these two positions. Piaget ([6] p 225), for instance, appears to suggest a hierarchy ...

BACKGROUND Objective and systematized analysis of cognitive and expressive language development. AIM To characterize expressive language and cognitive development considering the diversity and complexity of children's productions. METHOD This study involved 20 subjects (10 male and 10 female), who were adequate for gestational age and birth weight and had no pre, peri or post natal intercur...

A connectionist model of the balance scale task is presented which exhibits developmental transitions between 'Rule I' and 'Rule II' behavior [Siegler, R. S. (1976). Three aspects of cognitive development. Cognitive Psychology,8, 481-520.] as well as the 'catastrophe flags' seen in data from Jansen and van der Maas [Jansen, B. R. J., & van der Maas, H. L. J. (2001). Evidence for the phase trans...

The concept of a μ-algebra for an equational theory T = 〈Ω, E〉 was introduced in [10]. If the underlying set of a T-algebra is a complete lattice and if the operations from Ω preserve the partial order, the existence of least and greatest fix-points makes it possible to interpret μ-terms, which are derived from the primitive ones in Ω by substitution and by two formal operations of taking fixpo...

The consequences of prenatal maternal stress for development were examined in 125 full-term infants at 3, 6, and 12 months of age. Maternal cortisol and psychological state were evaluated 5 times during pregnancy. Exposure to elevated concentrations of cortisol early in gestation was associated with a slower rate of development over the 1st year and lower mental development scores at 12 months....