Spatial localization of a goal: Beacon homing and landmark piloting by rats on a radial maze

We performed six experiments in order to examine the ability of rats to use moving beacons and landmarks as cues to the location of reward on an eight-arm radial maze. In Experiments 1–4, the cues and goals were moved before each trial, and groups in which a single beacon was placed on the rewarded arm, a single landmark indicated that reward was on the arm immediately to the left of a landmark, or two landmarks were placed on each side of the reward arm were compared. The rats rapidly learned to track the reward in the beacon condition, failed to find the reward sooner than chance expectation with a single landmark, and did only slightly better than chance with two landmarks. In Experiments 5 and 6, the rats were trained in five trials per day, with the landmark and goal locations constant over daily rewarded trials, and in two extinction trials that were inserted among the rewarded trials. The rats found the goal arm at substantially better than chance expectancy with both one and two landmarks. Our results, in agreement with data from recent swimming pool experiments (A. D. L. Roberts & Pearce, 1998), show that rats will use the relationship between moving landmarks and a goal in order to find reward.     

Evaluation of Students’ Understanding of Thermal Concepts in Everyday Contexts

The aims of this study were to determine the underlying conceptual structure of the thermal concept evaluation (TCE) questionnaire, a pencil-and-paper instrument about everyday contexts of heat, temperature, and heat transfer, to investigate students’ conceptual understanding of thermal concepts in everyday contexts across several school years and to analyse the variables—school year, science subjects currently being studied, and science subjects previously studied in thermal energy—that influence students’ thermal conceptual understanding. The TCE, which was administered to 515 Korean students from years 10–12, was developed in Australia, using students’ alternative conceptions derived from the research literature. The conceptual structure comprised four groups—heat transfer and temperature changes, boiling, heat conductivity and equilibrium, and freezing and melting—using 19 of the 26 items in the original questionnaire. Depending on the year group, 25–55% of students experienced difficulties in applying scientific concepts in everyday contexts. Years of schooling, science subjects currently studied and physics topics previously studied correlated with development of students’ conceptual understanding, especially in topics relating to heat transfer, temperature scales, specific heat capacity, homeostasis, and thermodynamics. Although students did improve their conceptual understandings in later years of schooling, they still had difficulties in relating the scientific concepts to their experiences in everyday contexts. The study illustrates the utility of using a pencil-and-paper questionnaire to identify students’ understanding of thermal concepts in everyday situations and provides a baseline for Korean students’ achievement in terms of physics in everyday contexts, one of the objectives of the Korean national curriculum reforms.     

Gender Meanings in Grade Eight Students' Talk about Classroom Writing

This study examined the ways in which gender influences students' choices in their classroom writing. Data sources included the students' writing, small group conversations, classroom observations, and interviews with teachers. For the most part, students attempted to maintain a widely recognized gender order in their talk about girls' and boys' writing. The students' writing choices were constrained or extended by the range of discourses available to construct their gender and literate identities. The boys generally positioned themselves within powerful hegemonic masculine discourses. Some boys, however, wrote about relationships between male friends within competitive environments. Taking up the more powerful masculine discourses, some girls wrote about personal experiences playing team sports. Students made one boy aware that he had positioned himself as incompetent within the social order when he wrote about a gay character.     

Opinion polling and the measurement of Americans’ attitudes regarding education*

Abstract

The meaning, measurement, and implications of ‘public opinion’ have long been a source of debate. In this paper, we examine the extent to which the educational priorities of elites in the US reflect the educational priorities of the American public. To do so, we focus on one particular segment of the education policy-making elite – education poll creators. Through a content analysis of questions asked between 1969 and 2013 in the Phi Delta Kappa/Gallup Poll of the Public’s Attitudes toward the Public Schools, we examine the salience of key educational issues over time. We compare these trends to the proportion of poll respondents who label those issues the ‘biggest problem’ facing schools, thereby approximating two different conceptions of public opinion regarding education. We find that the issues that receive the most coverage by pollsters do not typically match the issues that respondents claim to be the biggest problems in schools. In light of the important role that opinion polls may play in shaping discussion and debate over educational issues, we argue that further study of the construction of public opinion is warranted.     

Multimodal meaning-making during play in two Northern Canadian Indigenous kindergarten classrooms

Abstract

This research explores young Indigenous children’s multimodal meaning-making to carry out social intentions in dramatic and construction/materials play settings. The participants are two teachers and 21 children from two Northern Canadian Indigenous communities. Underpinned by social semiotic theory, the research involves inductive analyses of six videos of children’s play. Our findings show a richness in Indigenous children’s meaning-making, as they used verbal and non-verbal modes to carry out 26 specific social intentions that we grouped into four broad social intention categories: Getting Along, Expressing Emotion/Interest, Satisfying Own Needs and Directing. The social intention carried out most frequently was showing interest in an activity. Participating children were more likely to use non-verbal modes, particularly in construction/materials play contexts. They also combined verbal and non-verbal modes to achieve their social intentions, but did not use verbal modes exclusively. When children used verbal modes to any great extent, it was primarily in a dramatic play context where the teacher took a role in children’s dramatic play. Our research indicates a need for greater attention by educators, curriculum developers and researchers to multimodal meaning-making in Indigenous children’s play, given the cultural importance of non-verbal communication and participating Indigenous children’s remarkable multimodal meaning-making during play.