Stylistic Variation at the "Single-Word" Stage: Relations between Maternal Speech Characteristics and Children's Vocabulary Composition and Usage

In this study we test a number of different claims about the nature of stylistic variation at the "single-word" stage by examining the relation between variation in early vocabulary composition, variation in early language use, and variation in the structural and functional propreties of mothers' child-directed speech. Maternal-report and observational data were collected for 26 children at 10, 50, and 100 words, These were then correlated with a variety of different measures of maternal speech at 10 words, The results show substantial variation in the percentage of common nouns and unanalyzed phrases in children's vocabularies, and singficant relations between this variation and the way in which language is used by the child. They also reveal singficant relations between the way in whch mothers use language at 10 words and the way in chich their children use language at 50 words and between certain formal properties of mothers speech at 10 words and the percentage of common nouns and unanalyzed phrases in children's early vocabularies, However, most of these relations desappear when an attempt is made to control for ossible effects of the child on the mother at Time 1. The exception is a singficant negative correlation between mothers tendency to produce speech that illustrates word boundaries and the percentage of unanalyzed phrases at 50 and 100 words. This suggests that mothers whose sprech provides the child with information about where new words begin and end tend to have children with few unanalyzed. phrases in their early vocabularies.     

The importance of social learning environment factors for affective well-being among students

We investigated whether perceived inclusion and exclusion with peers at school, as well as self-reported bullying exposure, affected positive and negative affect among 1161 students from grades five through seven. Positive affect was significantly, but only weakly, affected by perceived exclusion and inclusion. Negative affect was not related to perceived inclusion; however, both perceived exclusion and self-reported bullying exposure gave effects on negative affect. Our research points to the need of creating a learning environment that promotes inclusion and caring and supportive interpersonal relationships. This will probably increase student functioning.     

A Multilevel Factor Analysis of Third-Party Evaluations of Noncognitive Constructs Used in Admissions Decision Making

The assessment of noncognitive traits is challenging due to possible response biases, “subjectivity” and “faking.” Standardized third-party evaluations where an external evaluator rates an applicant on their strengths and weaknesses on various noncognitive traits are a promising alternative. However, accurate score-based inferences from third-party evaluations requires disentangling score variance due to raters versus applicants by utilizing a multilevel factor analysis (MFA). To date, MFA is highly underutilized in the measurement field. In this study, we apply the MFA to analyze third-party evaluations using data from the Personal Potential Index (PPI). The PPI is a third-party measure used to evaluate graduate school applicants noncognitive traits to help inform admissions decisions. We analyzed 12,693 ratings of 6,249 applicants divided into two randomly selected subgroups. We conducted multilevel exploratory factor analysis with one subgroup and tested the hypothesized structure with the other subgroup. This work illustrates the advantages and challenges of using MFA approach to support the meaningful and valid interpretation of scores from third-party evaluations.     

Handling missing data: analysis of a challenging data set using multiple imputation

Missing data is endemic in much educational research. However, practices such as step-wise regression common in the educational research literature have been shown to be dangerous when significant data are missing, and multiple imputation (MI) is generally recommended by statisticians. In this paper, we provide a review of these advances and their implications for educational research. We illustrate the issues with an educational, longitudinal survey in which missing data was significant, but for which we were able to collect much of these missing data through subsequent data collection. We thus compare methods, that is, step-wise regression (basically ignoring the missing data) and MI models, with the model from the actual enhanced sample. The value of MI is discussed and the risks involved in ignoring missing data are considered. Implications for research practice are discussed.     

An Interactive Methodology for ‘Empowering’ Students to Deal with Controversial Environmental Problems

After a short introduction to the Italian context relating to science teachers’ training and updating course we explain the motives that led us to produce educational material based on interactive methodologies (role‐playing) and to present it to in‐service teachers during updating courses. The role‐playing activities that we prepared draw from specific historical and geographical situations in order to face the problems of global environmental issues, such as, for example, water resources management, waste‐disposal, reforestation techniques. Some observations on the didactic effect of our proposals and on the importance of encouraging a change in the teachers’ way of thinking are presented. The latter is a prerequisite for a correct use of the educational material supplied. This means introducing a problematic concept of scientific knowledge and stimulating new attitudes to establish less hierarchic inter‐relations in class.     

Perceptions of sleep duration,patterns and emotional and behavioural difficulties: a study of Greek adolescents

The study investigated adolescent students’ perceptions of sleep duration and patterns, and the way they relate to emotional and behavioural difficulties. Five hundred and two students from public schools in Greece completed the Sleep Questionnaire and the Strengths and Difficulties Questionnaire (SDQ). It was demonstrated that consistency in sleep duration and quality in sleep patterns were associated with a reduction in adolescents’ reports of emotional and behavioural difficulties. Sleep duration was similarly distributed across gender, while sleep patterns were gender‐specific. Distinct differential effects of gender, sleep duration and patterns to adolescents’ emotional and behavioural difficulties were also found. These findings and their implications for research and practice are discussed, within the scope of the biopsychosocial framework in education.     

Storylines in the physics teaching content of an upper secondary school classroom

ABSTRACT

Background: Physics is often seen as a discipline with difficult content, and one that is difficult to identify with. Socialisation processes at the upper secondary school level are of particular interest as these may be linked to the subsequent low and uneven participation in university physics. Focusing on how norms are construed in physics classrooms in upper secondary school is therefore relevant.

Purpose: The purpose of this paper is to identify discursive patterns in teacher–student interactions in physics classrooms.

Design and methods: Three different physics lessons with one class of students taught by three different teachers in upper secondary school were video-recorded. Positioning theory was used to analyse classroom interaction with a specific focus on how physics was positioned.

Results: We identified seven different storylines. Four of them (‘reaching a solution to textbook problems’, ‘discussing physics concepts in order to gain better understanding’, ‘doing empirical enquiry’ and ‘preparing for the upcoming exam’) represent what teaching physics in an upper secondary school classroom can be. The last three storylines (‘mastering physics’, ‘appreciating physics’ and ‘having a feeling for physics’) all concern how students are supposed to relate to physics and, thus, become ‘insiders’ in the discipline.

Conclusions: The identification and analysis of storylines raises awareness of the choices teachers make in physics education and their potential consequences for students. For example, in the storyline of mastering physics a good physics student is associated with ‘smartness’, which might make the classroom a less secure place in general. Variation and diversity in the storylines construed in teaching can potentially contribute to a more inclusive physics education.     

Earned-secure attachment status in retrospect and prospect

Past research with the Berkeley Adult Attachment Interview demonstrates that retrospectively defined earned-secures (who coherently describe negative childhood experiences) parent as effectively as do continuous-secures (who coherently describe positive childhood experiences), but manifest liabilities in the form of depressive symptomatology. This article presents data from a 23-year longitudinal study that replicate and extend prior research, testing a key premise that earned-secures so defined actually have a history of insecure attachments that change over time and/or endure consistently harsh or ineffective parenting in their youth. Discrepant with assumptions, retrospective earned-secures were not more likely than continuous-secures to have been anxiously attached in infancy and were observed in childhood and adolescence to have encountered among the most supportive and structured maternal parenting in a high-risk sample. Prospectively defined earned-secures (operationalized using participants' infant attachment classifications) did indeed go on to have success in their close relationships, many without reporting relatively high levels of internalizing distress in adulthood.