Predicting reading success in a multilevel schoolwide reading model: a retrospective analysis

Despite recent research findings that implicate a long list of student variables that predict reading success or failure, these predictor variables have not been considered in the context of contemporary models of multitiered schoolwide reading intervention. This longitudinal, retrospective study follows 668 kindergarten and first-grade students identified as at risk for later reading difficulties through third grade. Key predictor variables were examined to determine their validity for predicting initial status and growth on oral reading fluency, third-grade oral reading fluency, and third-grade performance on a standardized test of reading. Results are provided in light of the instructional model provided. Implications for instruction and assessment are discussed.     

Components of Understanding in Proportional Reasoning: A Fuzzy Set Representation of Developmental Progressions

The development of proportional reasoning was examined using a temperature mixture task. Each individual's task understanding was assessed by components measuring understanding of various principles of the task. Age differences were found in the mean component scores. More important, different patterns of components were found depending on whether the task was presented numerically or nonumerically. Component patterns also depended on whether the task was presented such that subjects predicted the outcome of combining 2 containers of water at different temperatures (prediction task) or such that subjects inferred 1 of the 2 initial temperatures given the final temperature (reverse task). The results show the importance of distinguishing between intuitive knowledge and formal computational knowledge of proportional concepts and provide a new perspective on how intuitive and computational knowledge are related during development. Finally, the results also led to a new conceptualization of developmental levels as categories with fuzzy boundaries. Under this conceptualization, individuals can have different degrees of membership in "fuzzy developmental levels." This new concept preserves individual differences but also describes the sequence of development.     

Educational Research in an Introductory Astronomy Course

The lecture is a common method used in college instruction, but many teachers are questioning its effectiveness. For this study, two successive spring semester sections of introductory astronomy for non-science majors were studied. The spring 1999 semester was the instructor's first attempt to incorporate innovative instructional techniques to include hands-on, minds-on instruction within the lecture setting. The educational research involved classroom observations, personal interviews, and pre-instruction/post-instruction administration of the Texas Attitude Survey and the Astronomy Diagnostic Test. During the spring 2000 semester, the instructor modified instruction to respond to student concerns from the previous semester. Student scores for the second course showed significant improvement in astronomy content and the institutional course survey, but not in student self-efficacy.     

Transfer of visual and haptic maze learning in rats

Cross-modal transfer of learning between black/white and rough/smooth discrimination tasks was studied in a two-choice maze procedure in which the stimuli for both discriminations were located on the floor of the maze. Rats were trained initially with cues of one modality and then given transfer training with cues of the second modality. The amount of transfer produced by two criteria of learning, 9 correct responses in 10 trials and 18 correct responses in 20 trials, was also studied. Bidirectional cross-modal transfer of learning was demonstrated more clearly with the more stringent learning criteria. These positive transfer effects appeared primarily to be the result of general transfer processes.     

Emergence of choice strategies in the rat: Shift-stay differentiation precedes win-lose differentiation

The choice strategies of rat pups between 12 and 21 days of age were studied in a two-choice discrimination procedure that used access to a nonlactating anesthetized dam as a reward. After receiving a reward (win) or not receiving a reward (lose), a pup repeated a previous choice (stay) or made an alternative response (shift). At 12 and 15 days of age, pups demonstrated neither a stay nor a shift response strategy; at 18 and 21 days of age, pups had a robust tendency to shift. Winning or losing did not alter behavior until 21 days of age, at which point winning produced a greater tendency to return to the initially visited location for rats in the stay condition.     

The effect of print size on reading speed in dyslexia

This article details a study which predicted that across a wide range of print sizes dyslexic reading would follow the same curve shape as skilled reading, with constant reading rates across large print sizes and a sharp decline in reading rates below a critical print size. It also predicted that dyslexic readers would require larger critical print sizes to attain their maximum reading speeds, following the letter position coding deficit hypothesis. Reading speed was measured across twelve print sizes ranging from Snellen equivalents of 20/12 to 20/200 letter sizes for a group of dyslexic readers in Grades 2 to 4 (aged 7 to 10 years), and for non-dyslexic readers in Grades 1 to 3 (aged 6 to 8 years). The groups were equated for word reading ability. Results confirmed that reading rate-by-print size curves followed the same two-limbed shape for dyslexic and non-dyslexic readers. Dyslexic reading curves showed higher critical print sizes and shallower reading rate-by-print size slopes below the critical print size, consistent with the hypothesis of a letter-position coding deficit. Non-dyslexic reading curves also showed a decrease of critical print size with age. A developmental lag model of dyslexic reading does not account for the results, since the regression of critical print size on maximum reading rate differed between groups.     

Many Languages,Many Workflows: Mapping and Analyzing Technical Services Processes for East Asian and International Studies Materials

This case study addresses a workflow analysis project undertaken in the International Studies and Asia Library technical services areas of the University of Michigan Library. The analysis was an opportunity to document existing technical services practices in three primary workflow areas: acquisitions/receiving, cataloging, and cataloging maintenance. International Studies began the project independently, and subsequently consultants were hired to work with both International Studies and Asia Library to find efficiencies and barriers, identify solutions, and propose future changes in non-Roman-language cataloging workflows. This article provides an account outlining the project background, implementation, outcomes, challenges, and lessons learned.     

Science discovery: Inside story

Human Anatomy in preschool? The answer is a resounding, “Yes!” The decision to study the “inside parts” of our bodies was based on solid ground. Young children ask questions about their bodies and we looked for activities which could help answer some of those questions.