Rats’ midsession reversal performance: the nature of the response

The midsession reversal task involves a simple simultaneous discrimination that predictably reverses midway through a session. Under various conditions, pigeons generally both anticipate the reversal and perseverate once it has occurred, whereas rats tend to make very few of either kind of error. In the present research, we investigated the hypothesis that the difference in performance between rats and pigeons is related to the nature of the responses made. We hypothesized that rats could have been better at bridging the intertrial interval by keeping the relevant paw close to the lever while eating, whereas the pigeons had to remove their beak from the response key and insert it into the feeder, thus making it difficult to mediate the response last made. In the present experiment, in successive phases, rats were trained to leverpress or nose-poke on a 40-trial midsession reversal, an 80-trial midsession reversal, and a variable-location reversal. The results showed that the leverpress group acquired the task faster than the nose-poke group, but that both groups reached comparable levels of performance. Thus, the difference in the natures of the responses cannot fully account for the differences in accuracy between rats and pigeons. Additionally, differences in the types of errors made by the two groups suggest that the nature of the response plays different roles in the performance of this task.     

Inferential statistics and the use of administrative data in US educational research

While the use of inferential statistics is a nearly universal practice in the social sciences, there are instances where its application is unnecessary and potentially misleading. This is true for a portion of research using administrative data in educational research in the United States. Surveying all research articles using administrative data published in Educational Researcher and American Educational Research Journal between 2011 and 2013, we find that over half use inferential techniques to help interpret results despite the use of population data. To the extent that these practices and findings are replicated and interpreted in the United States and elsewhere, this can lead to the undervaluing of potentially meaningful patterns and trends.     

Integration of Stochastic Differential Equations Using Structural Equation Modeling: A Method to Facilitate Model Fitting and Pedagogy

Stochastic differential equation (SDE) models are a promising method for modeling intraindividual change and variability. Applications of SDEs in the social sciences are relatively limited, as these models present conceptual and programming challenges. This article presents a novel method for conceptualizing SDEs. This method uses structural equation modeling (SEM) conventions to simplify SDE specification, the flexibility of SEM to expand the range of SDEs that can be fit, and SEM diagram conventions to facilitate the teaching of SDE concepts. This method is a variation of latent difference scores (McArdle, 2009; McArdle & Hamagami, 2001) and the oversampling approach (Singer, 2012), and approximates the advantages of analytic methods such as the exact discrete model (Oud & Jansen, 2000) while retaining the modeling fiexibility of methods such as latent differential equation modeling (Boker, Neale, & Rausch, 2004). A simulation and empirical example are presented to illustrate that this method can be implemented on current computing hardware, produces good approximations of analytic solutions, and can flexibly accommodate novel models.     

Qualitative and quantitative differences among dyslexic,normal, and nondyslexic poor readers

This study tested the hypothesis that when a stringent criterion of normal IQ is applied in the selection of dyslexic readers, and when dyslexics, nondyslexic poor readers, and normal readers are matched on reading comprehension — rather than word reading — significant differences among these groups can be demonstrated. Two groups of poor readers from primary grades, one with normal IQ (dyslexics) and the other with below-average IQ (nonspecific reading disabled, NSRD) were matched for reading comprehension with a group of younger normal readers. The dyslexic group was found to be inferior to the other two groups in tests of decoding and spelling. The dyslexic readers were more context-dependent for word recognition than the other two groups. The NSRD group did not differ from the normal readers in these aspects but had the worst performance on a test of inferential comprehension. It was concluded that dyslexics differ from normal readers and low-IQ poor readers in word and nonword reading skills and context-dependency for reading. A group of six adult dyslexics were also found to be deficient in decoding skills. A lack of unanimity in the use of certain terminology, a substantial age difference between low-IQ poor readers and normals, and the difference in the criteria used for matching the different groups could be factors that can explain the disagreements seen between the findings of the present study and those reported by some other studies. Potential problems associated with reading-age matched experimental design are discussed.     

AN INVESTIGATION OF THE ACCEPTABILITY OF VIDEOCONFERENCING WITHIN A SCHOOL‐BASED BEHAVIORAL CONSULTATION FRAMEWORK

School‐based behavioral consultation with classroom teachers is one of the primary ways school psychologists deliver intervention services to students. The present study aimed to evaluate the acceptability of videoconferencing (VC) with teachers as an alternative medium of consultative communication. Specifically, problem identification interviews (PIIs) were conducted with 60 classroom teachers to simulate a typical consultation interaction. Each teacher completed two PIIs with the researcher consultants, one in a traditional face‐to‐face (FtF) format and one in a videoconference (VC) format Teachers completed two brief pre‐post measures, the Fast Form of the Technology Acceptability Model (FF‐TAM) and the Distance Communication Comfort Scale (DCCS) to evaluate the acceptability of VC. Demographic moderators of the acceptability of VC were evaluated using a multiple regression analysis. The results suggest that although teachers rated VC as an acceptable communication medium prior to participating in the VC interview, teacher acceptability ratings increased to “highly acceptable” after participating in the study. Finally, no variables were identified that significantly moderated the relationship between teachers' acceptability rating of VC and their demographic variables. Implications for practice and future research are discussed.     

Singapore Education in “New Times”: Global/local imperatives

This paper critically examines recent education reform in Singapore launched under the rhetoric of “Thinking Schools, Learning Nation” (TSLN). I will make explicit the context and the premises underlying the new state‐initiated TSLN education reform. I argue that the re‐alignment of education change is a response to the trajectories of (global) economic conditions, concomitantly framed by (local) sociopolitical and cultural–ideological needs. Next, I tease out and critique the pedagogical problems and contradictions embedded in the TSLN education reform. The paper concludes by asking what critical perspectives can be drawn from the Singapore case vis‐a`‐vis globalisation and education reform.     

Not all reading disabilities are alike

In this article, reading disability is defined broadly to refer to below-average achievement in reading comprehension as assessed by a standardized test. With our research we tried to answer the question of whether all children with reading disability share a common etiology of deficient phonology, or constitute heterogeneous groups. The answer to this question was sought in four studies that examined reading disabilities from the perspective of componential skills of reading. In Part 1, the results of the first study are reported. A principal-components analysis of the performance of 139 children from Grades 3, 4, and 6 on reading-related tasks yielded two factors: decoding and comprehension. However, factor analyses conducted for each grade separately indicated that orthographic skill and processing speed could possibly constitute a third component. The orthography-speed factor emerged as a factor only in the 6th grade. Part 2 of this article reports the findings of three studies that analyzed the componential skills profiles of poor readers. It was found that the poor readers constituted heterogeneous groups and that four different types of poor readers could be identified with deficiency in any one of the following skills: (a) decoding only, (b) comprehension only, (c) a combination of decoding and comprehension, and (d) a combination of orthographic processing and reading speed. It was also found that the criteria used in selecting poor readers influenced the distribution of the ratio of the four types of poor readers within any given group.     

The impact of science content and professional learning communities on science teaching efficacy and standards‐based instruction

This study examines the impact of standards‐based professional development on teacher efficacy and instructional practice of elementary and middle school science teachers. Professional development activities were conducted over a period of 3 years and included content courses as well as teacher involvement in professional learning communities. Teacher efficacy was assessed at five time points using the Science Teacher Efficacy Beliefs Instrument (STEBI), and instructional practice was evaluated at four time points with classroom observations using the Reformed Teaching Observation Protocol (RTOP). Results indicate that there was significant growth in teacher self‐efficacy but not in outcome expectancy. There was also significant growth in the extent to which teachers implemented inquiry‐based instruction in the classroom. Additionally, a positive correlation was observed between changes in self‐efficacy and changes in the use of inquiry‐based instructional practice. These results are discussed in terms of a model of teacher learning wherein changes in teacher beliefs and changes in classroom practice mutually influence each other, and also in terms of the impact of collaboration on teacher efficacy and practice. © 2010 Wiley Periodicals, Inc., Inc. J Res Sci Teach 48: 534–551, 2011