Assessing the psychosocial environment of science classes in Catholic secondary schools

Much Catholic school and church rhetoric suggests that Catholic schools possess distinctive learning environments. Research into this aspect of Catholic schooling has been hampered by the lack of an appropriate assessment instrument. By drawing on contemporary church literature, the perceptions of personnel involved in Catholic education and existing classroom environment questionnaires, a new instrument was developed to assess student perceptions of classroom psychosocial environment in Catholic schools. The use of this instrument in 64 classrooms in Catholic and Government schools indicated significant differences on some scales. The distinctive nature of Catholic schooling did not extend to all classroom environment dimensions deemed important to Catholic education. Specializations: Catholic education, learning environments. Specializations: conceptual change in students, science teacher professional development, scientific reasoning, learning environments. Specializations: learning environments, science education, educational evaluation, curriculum.     

Risk factors for infant maltreatment: a population-based study

CONTEXT: Of the approximately 900,000 children who were determined to be victims of abuse or neglect by US child protective services in 2002, the birth-to-3 age group had the highest rate of victimization (1.6%) and children younger than 1 accounted for the largest percentage of victims (9.6%). OBJECTIVE: To identify perinatal and sociodemographic risk factors associated with maltreatment of infants up to 1 year of age. DESIGN AND SETTING: Observational cohort study. PARTICIPANTS: 189,055 children born in 1996 in Florida. MAIN OUTCOME MEASURE: Infant maltreatment, defined as a verified report of abuse, neglect, or threatened harm that occurred between day 3 of life and 1 year. RESULTS: 1,602 children (.85%) of the 1996 birth cohort had verified instances of maltreatment by age 1. Of 15 perinatal and sociodemographic variables studied, 11 were found to be significantly related to infant maltreatment. Five factors had adjusted relative risks (RR) of two or greater: Mother smoked during pregnancy (RR 2.8); more than two siblings (RR 2.7); Medicaid beneficiary (RR 2.1); unmarried marital status (RR 2.0); low birth weight infant (RR 2.0). Infants who had four of these five risk factors had a maltreatment rate seven times higher than the population average. CONCLUSIONS: Data on nearly all risk factors found to be significantly associated with infant maltreatment are available on the birth certificate. Such information can be incorporated into a population-based risk-assessment tool that could identify subpopulations at highest risk for infant maltreatment. Because resources are limited, these groups should be given priority for enrollment in child abuse prevention programs.     

Instrumental escape learning in the rat at 24-hour intertriai interval: Effects of magnitude and schedule of reinforcement

Three experiments investigated the effects of magnitude and schedule of reinforcement and level of training in instrumental escape learning at a 24-h intertriai interval. In Experiment I, two magnitudes of reinforcement were factorially combined with two schedules of reinforcement (CRF and PRF). Under PRF, large reward produced greater resistance to extinction than did small reward, while the reverse was true under CRF. In Experiment II, two levels of acquisition training were factorially combined with three schedules of reinforcement (CRF, single-alternation, and nonalternated PRF). Patterned running was observed late in acquisition in the single-alternation extended-training condition. Resistance to extinction was greater for the nonalternated PRF condition than for the single-alternation condition following extended acquisition, and the reverse was true following limited acquisition. Experiment III confirmed the extinction findings of Experiment II. The results of all three experiments supported an analysis of escape learning at spaced trials in terms of Capaldi’s (1967) sequential theory.     

Personality as a Predictor of First‐Semester Adjustment to College: The Mediational Role of Perceived Social Support

Personality was hypothesized to predict college adjustment because of the role of perceived social support. A sample of 111 freshmen completed measures of personality, perceived social support, and college adjustment twice in their 1st semester. Perceived social support mediated the relationships between 3 personality factors (Emotional Stability, Social Boldness, and Abstractedness) and college adjustment, highlighting perceived social support as a point of intervention to improve 1st‐semester students' college adjustment.     

Dynamical Patterns in the Development of Clapping

The development of a complex rhythmical behavior—clapping—is modeled using a formal, explicit model of coupled oscillator dynamics. Even though this behavior manifests a good deal of nonstationarity and high variability within and across subjects, results indicate that these properties may be dynamically modeled quantitatively as well as qualitatively. Results suggest that clapping goes through a less stable period of relative coordination between 3 and 7 years before more stable absolute coordination is achieved. Nevertheless, in that the clapping behavior is affected in highly predictable ways by inertial loading of the limbs, the same underlying dynamic seems responsible for the coordination of both the younger and older children. Developmentally, the behavior of the coordination variable (relative phase) changes from a nonconstant magnitude in younger clappers to a constant magnitude in older clappers. These results suggest that development of proficiency in rhythmic motor skills displays developmental changes that can be understood well in dynamical terms.     

The Role of Reform Curricular Materials in an Internship: The Case of Alice and Gregory

This report describes a case study of asecondary school mathematics internship wheremost of the elements of the internship ecologywere aligned with calls by the National Councilof Teachers of Mathematics [NCTM] for reform.Much research has been done on the lack ofimpact of teacher education programs on teacherclassroom behavior. Often this results fromdissonance between the philosophy and goals ofuniversity teacher education programs and thoseof schools. The case documented here offers aninstance of alignment between the universityprogram and the school internship site. Thefindings showed that within this supportiveatmosphere the reform curricular materialsbeing used in the classroom had a strong andlargely positive influence on the character ofthe internship experience, and on the intern'slearning. The form and content of the materials– Core-Plus Mathematics Project'sContemporary Mathematics in Context –supported reform-oriented development for theintern by providing particular foci to theplanning discussions between the intern and thementor. These areas of focus were: (a) themathematics content itself, (b) conceptualunderstanding as a main goal for instruction,and (c) the use of questioning as the bestmeans of guiding students to thatunderstanding. The findings highlight theimportance of developing reform-supportiveenvironments for intern teaching placements.     

Equating Error and Statistical Bias in Small Sample Linear Equating

A resampling study was conducted to compare the statistical bias and standard errors of nonequivalent-groups linear test equating in small samples of examinees. Sample sizes of 15, 25, 50, and 100 were examined. One thousand samples of each size were drawn with replacement from each of 5 archival data files from teacher subject area tests. For each test, data files from 2 parallel forms were used. Results suggest trivial levels of equating bias even with small samples, but substantial increases in standard errors as sample size decreases. Results were interpreted in terms of applications to testing situations in which small numbers of examinees are available.     

The Right “Fit”: Exploring Science Teacher Candidates’ Approaches to Natural Selection Within a Clinical Simulation

Teachers and students struggle with the complexities surrounding the evolution of species and the process of natural selection. This article examines how science teacher candidates (STCs) engage in a clinical simulation that foregrounds two common challenges associated with natural selection—students’ understanding of “survival of the fittest” and the variation of species over time. We outline the medical education pedagogy of clinical simulations and its recent diffusion to teacher education. Then, we outline the study that situates each STC in a one-to-one interaction with a standardized student who is struggling to accurately interpret natural selection concepts. In simulation with the standardized student, each STC is challenged to recognize content misconceptions and respond with appropriate instructional strategies and accurate explanations. Findings and implications center on the STCs’ instructional practices in the simulation and the use of clinical learning environments to foster science teacher learning.     

Illustrating the Dangers of Hunting the Process Mean

This article describes two simple ways to illustrate the important concept in statistical process control known as “hunting”. The two simulations use dice and Minitab respectively.