Purposive environments: Engaging students in the values and practices of history

Recent research on student learning has given close attention to how students experiences and actions are mediated by the whole university learning–teaching environment in which they find themselves. The current article pursues this focus on learning–teaching environments in two stages. Guided by socio-cultural perspectives on learning, the first part:

Eye movements reveal readers’ lexical quality and reading experience

Two experiments demonstrate that individual differences among normal adult readers, including lexical quality, are expressed in silent reading at the word level. In the first of two studies we identified major dimensions of variability among college readers and among words using factor analysis. We then examined the effects of these dimensions of variability on eye movements during paragraph reading. More experienced readers (who also were higher in reading speed) read words more quickly, especially less frequent words, while readers with higher lexical knowledge showed shorter early fixations, especially for more frequent words. These results suggest that individual differences in reading may reflect differences in the quality of lexical representations and in reading experience, which is a source of lexical quality. In a second study, we controlled the lexical knowledge readers obtained from new words through a training paradigm that varied exposure to a word’s orthographic, phonological, and meaning constituents. Training exposure to orthographic and phonological constituents affected first pass reading measures, and phonological and meaning training affected second pass measures. Incomplete knowledge of word components slowed first pass reading times, compared to both more complete knowledge and no knowledge. Training effects were mediated by individual differences, pointing to lexical quality and reading experience—which, combined reflect reading expertise—as important in word reading as part of text reading.     

Child Development and Neuroscience

Although developmental psychology and developmental neuroscience share interests in common problems (e.g., the nature of thought, emotion, consciousness), there has been little cross-fertilization between these disciplines. To facilitate such communication, we discuss 2 major advances in the developmental brain sciences that have potentially profound implications for under standing behavioral development. The first concerns neuroimaging, and the second concerns the molecular and cellular events that give rise to the developing brain and the myriad ways in which the brain is modified by both positive and negative life experiences. Recurring themes are that (1) critical, new knowledge of behavioral development can be achieved by considering the neurobiological mechanisms that guide and influence child development, and (2) these neurobiological mechanisms are in turn influenced by behavior.     

Connectionism and learning to read: Steps towards a psychologically plausible model

We consider the prospects and need for a psychologically plausible connectionist model of the development of word recognition skills. We present an outline of the Seidenberg and McClelland (1989) distributed, developmental model of word recognition and naming. We emphasize certain incompatibilities between this model and the assumptions underlying it and psychological evidence from studies of children learning to read. In particular, we emphasize the importance of phonological skills as precursors and facilitators of learning to read. We argue that it may be possible to develop a connectionist model of the development of word recognition skills which, by having a built in knowledge of phonology, will be more consistent with evidence from studies of both normal and dyslexic children.     

An Empirical Investigation of Impact Moderation in Test Construction

This investigation constructed four different kinds of test sections using three methods of test assembly that incorporate the goals of simultaneous moderation of three kinds of impact-gender impact, African-American impact, and Hispanic- American impact. The test sections were administered undetectably to random samples from the appropriate population. The results were evaluated by comparison of the characteristics of moderated sections with those of parallel operational sections. Almost all methods of test assembly produced either moderation of impact in the appropriate direction or no change in impact. Taking impact into account in test assembly tended to lower reliability slightly, raise concurrent validity slightly, and maintain the construct measured by the parallel operational section. It also reduced the relative efficiency for test takers in the middle score range while increasing efficiency for those with more extreme scores.