Science and Worldviews in the Classroom: Joseph Priestley and Photosynthesis

This paper elaborates on the life and publications of Joseph Priestley, the eighteenth-century polymath. The paper outlines his particular place in the European Enlightenment; it stresses the importance of philosophy and worldview in his scientific work on pneumatic chemistry, the composition of air, and his discovery of the process of photosynthesis (or the ‘restoration of air’ as it was called at the time); finally the paper indicates ways in which Priestley’s work on photosynthesis can be utilised in the school classroom to advance the understanding of scientific subject matter, to promote an understanding of the nature of scientific procedure and methodology, and finally to evaluate some basic tenets of the European Enlightenment that Priestley so passionately advocated.     

Parents’ and teachers’ beliefs about children’s school readiness in a high-need community

This study compared the beliefs of preschool teachers, kindergarten teachers, and parents in one mostly Hispanic and Black high-need urban school district to learn their views of what children should know and be able to do at kindergarten entry. Beliefs regarding the importance of 12 school readiness “resources” were assessed with the CARES survey designed for this study. Parents held remarkably similar beliefs, regardless of ethnicity or education. Parents and teachers also agreed that children must be healthy and socially competent, and be able to comply with teacher authority, although parents rated this latter resource higher. However, parents rated all classroom-related readiness resources as more important than teachers did. They believed it was necessary for a child to be able to communicate in English and to have basic knowledge and skills, which was more important than a child’s approach to learning. Preschool teachers also believed that knowledge was more important than kindergarten teachers did. Directions for further research and implications for policy and practice are discussed.     

An accurate VO2max nonexercise regression model for 18-65-year-old adults

The purpose of this study was to develop a regression equation to predict maximal oxygen uptake (VO2max) based on nonexercise (N-EX) data. All participants (N = 100), ages 18-65 years, successfully completed a maximal graded exercise test (GXT) to assess VO2max (M = 39.96 mL x kg(-1) x min(-1), SD = 9.54). The N-EX data collected just before the maximal GXT included the participant's age; gender; body mass index (BMI); perceived functional ability (PFA) to walk, jog, or run given distances; and current physical activity (PA-R) level. Multiple linear regression generated the following N-EX prediction equation (R = .93, SEE = 3.45 mL x kg(-1) x min(-1), % SEE = 8.62): VO2max (mL x kg(-1) x min(-1)) = 48.0730 + (6.1779 x gender; women = 0, men = 1) - (0. 2463 x age) - (0.6186 x BMI) + (0.7115 x PFA) + (0.6709 x PA-R). Cross validation using PRESS (predicted residual sum of squares) statistics revealed minimal shrinkage (R(p) = .91 and SEE(p) = 3.63 mL x kg(-1) x min(-1)); thus, this model should yield acceptable accuracy when applied to an independent sample of adults (ages 18-65 years) with a similar cardiorespiratory fitness level. Based on standardized beta-weights, the PFA variable (0.41) was the most effective at predicting VO2max followed by age (-0.34), gender (0.33), BMI (-0.27), and PA-R (0.16). This study provides a N-EX regression model that yields relatively accurate results and is a convenient way to predict VO2max in adult men and women.     

The 4 Dimensional Language of Infancy: The Interpersonal Basis of Art Practice

Using studies made in London, England, plus recent research conducted in Singapore, this paper investigates the roots of aesthetic and design sensibilities in the symbolic play and drawing of early infancy. This study supports Colwyn Trevarthen’s [1996] theory that in an interpersonal space formed between caregiver and infant, facial expression, gesture and vocalisations of each partner are orchestrated together and are given powerful expressive and representational values. Microanalysis of video recordings shows that exploratory actions impelled by the infant are organised by patterned bursts of emotions. The rhythmic periodicities of these actions form the structure of later art-making and design, including early drawing, painting and dance. There are important pedagogical implications concerning the optimal conditions required to promote art and design understandings in childhood. The Congress presentation of this paper was illustrated by video-recorded observations, made in London and Singapore, of the beginnings of expression, representation and design.     

A subtraction experiment with six and seven year old children

This paper gives an account of an experiment involving 176 children of 6 and 7 years and their difficulties with subtraction problems. By using two screening questions, four levels of attainment were established and two teaching programmes were then devised to help the children forward to their next level. The results show that it is possible to assess a level of understanding in subtraction quickly and accurately and that, through the teaching programmes, pre-requisite skills needed to establish a sound foundation for subtraction can be taught. The experiment indicates, however, that an attempt to symbolise too soon is a danger to be avoided.     

Efforts to control by children and adults with the type A coronary-prone behavior pattern.

Glass and his colleagues have suggested that the type A coronary-prone behavior pattern, which is characterized by competitiveness, aggressiveness, and impatience, is a response style aimed at maintaining and asserting control over poentially uncontrollable events. The present investigation examined the initial reactions of type A and type B boys and men to uncontrollable events. Children and adults pressed a button to earn nickels on one of the following schedules of reinforcement: a variable ratio of 7 or a fixed ratio of 7. The variable ratio schedule was assumed to appear less controllable than the fixed ratio schedule. The task was either of high or low salience (prominence). Results replicated previous research that type A's initially respond to highly salient uncontrollable events with more vigorous efforts to assert control than type B's. More importantly, the findings provided the first evidence that (1) the initial response to loss of control of type A and type B boys parallels that of their adult counterparts; and (2) the boys' response to the salience of the task is similar to that of their adult counterparts. Implications of the children's responses to uncontrollable events for the maintenance of type A behavior into adulthood and for the etiology of heart disease are discussed.