Learning about the equal sign: Does comparing with inequality symbols help?

This study investigated whether instruction that involves comparing the equal sign with other relational symbols is more effective at imparting a relational interpretation of the equal sign than instruction about the equal sign alone. Third- and fourth-grade students in a comparing symbols group learned about the greater than, less than, and equal signs and had the opportunity to compare the inequality symbols with the equal sign. Students in an equal sign group learned about the equal sign only. A third group of students served as a control group. Three aspects of students’ knowledge were assessed before and after the lesson: (a) conceptual understanding of the equal sign, (b) equation encoding, and (c) problem solving. Students in the comparing symbols group showed greater gains in conceptual understanding from pretest to posttest than students in the other two groups, and students in the comparing symbols group also scored higher on a posttest that assessed knowledge about inequality symbols and inequality problem solving. Thus, they learned about three symbols in the same amount of time as other students learned about the equal sign alone or not at all. Therefore, an instructional approach involving comparison can be an effective tool for learning about concepts in mathematics.     

Teacher-child relationships as dynamic systems

The purpose of the present study was to examine factors associated with the quality of the teacher-child relationship from first through fifth grade using data from phases I, II and III of the National Institutes of Child Health and Human Development Study of Early Child Care and Youth Development, a prospective study of 1364 children from birth through sixth grade. On average, children evidenced moderately high quality relationships with teachers in fifth grade. However, there was extensive variation in fifth grade relationship quality across children. Children who received more support and stimulation at home and whose parents had higher quality interactions with the school had higher quality relationships. Additionally, children in classrooms with more positive environments and better management had higher quality relationships. Lastly, females, European-American children, children with lower levels of behavior problems and children who had higher quality relationships with their teachers in kindergarten also had higher quality relationships with teachers. On average, children evidenced decreases in the quality of their relationships with teachers from first through fifth grade. Interestingly, children whose parents had more contact with their schools, who were in schools where teachers received higher salaries and in classrooms that had more positive emotional climates and that were better managed evidenced slower rates of decline in relationship quality. Implications for theory and practice are discussed.     

Engagement in After-School Programs as a Predictor of Social Competence and Academic Performance

Using the experience sampling method, this study examined two questions related to outcomes associated with after‐school programming. First, does the quality of experience in after‐school programs mediate the effect of program participation on social competence and academic performance? Second, among program participants, is the difference in quality of experience when in programs versus other settings after school related to higher social competence and academic performance? Middle school students (N = 196) attending eight programs in three Midwestern states reported a total of 4,970 randomly sampled experiences in and out of after‐school programs during 1 week in the fall and spring of the 2001–2002 academic year. Engagement during after‐school hours partially mediated the relationship between participation in after‐school programs and social competence. In addition, relative perceptions of engagement, challenge, and importance when in after‐school programs compared to elsewhere after school predicted higher English and math grades. Results suggest that the quality of experiences in after‐school programs may be a more important factor than quantity of experiences (i.e., dosage) in predicting positive academic outcomes.     

The relationship between self‐perception of physical attractiveness and sexual bullying in early adolescence

The relationship between self‐perception of physical attractiveness and four measures of sexual bullying behavior (victimization, perpetration, having friends who sexually bully, and observation of sexual bullying among peers at school) was examined in a sample of 396 middle school age students. Students who perceived themselves to be more physically attractive than their peers reported sexually bullying others more, being sexually bullied by others more, observing more sexual bullying, and having more friends who sexually bully others than did students who perceived themselves as average looking. In addition, males who perceived themselves to be less physically attractive than their peers reported being victimized more and reported observing more sexual bullying in the school environment. These findings highlight the importance of physical attractiveness in the early initiation of sexual harassment. Implications for future research and interventions with early adolescents are discussed. Aggr. Behav. 36:271–281, 2010. © 2010 Wiley‐Liss, Inc.     

Career counsellors' perceptions of the severity of career decision-making difficulties

Individuals differ in the type and severity of the difficulties they face when making a career decision. Relying on the Gati, Krausz, and Osipow (1996) taxonomy of career decision-making difficulties, we elicited the judgements of 28 career counselling experts about factors that contribute to the perceived severity of the difficulties. Difficulties attributed to an internal or emotional cause were judged as more severe than difficulties attributed to an external or cognitive cause. With respect to the consequences, difficulties that prevent making a decision, or those that require long-term treatment, were judged as more severe than difficulties that may lead to a non-optimal decision, and those that require a short-term treatment. The analysis revealed that the factor that most affected the experts' severity judgements was the expected length of treatment. Treatment priority was affected only partially by severity, reflecting the role of other considerations.     

高中生英语阅读知觉广度的眼动研究

该研究采用经典的"呈现随眼动变化技术"对高中生的英语阅读的知觉广度进行了眼动研究。结果发现:1)高中生英语阅读知觉广度的右侧范围是注视点右侧8～11个字符的空间;2)高中生的英语阅读知觉广度已达到成人水平。     

中学生师生关系的结构、类型及其发展特点

选取319名初一至高三学生作为被试,主要采用问卷法,考察中学生师生关系的结构、类型及其发展特点。结果表明：（1）师生关系结构具有冲突性、依恋性、亲密性和回避性四个维度;（2）师生关系类型包括矛盾冲突型、亲密和谐型和疏远平淡型三种类型;（3）师生关系各维度不存在显著性别差异,但存在显著年级差异,师生关系质量随年级升高呈波浪式下降趋势,初一学生的师生关系最好,初二和高二学生的师生关系最不理想;（4）师生关系各类型的人数比例存在显著年级差异。     

Communicative factors,conflict progression,and use of reconciliatory strategies in pre‐school boys‐a series of random events or a sequential process?

Affiliative interactions between former opponents soon after a conflict, in non‐human primates and pre‐school children, have been documented to be followed by a reduction of future aggression and stress reactions, and to promote tolerance between individuals. The phenomenon has, therefore, been called reconciliation. Studies of non‐human primates have shown that the conflict cause can influence the reconciliatory outcome, and whether the aggressor or the victim of the aggression is more likely to take the initiative to reconcile, can differ between species. Few studies in pre‐school children have addressed how factors preceding the post‐conflict period, such as social interactions before the conflict outbreak, or the cause of the conflict, may be related to the likelihood of reconciliation, conflict progression, and conflict outcome in the form of possible continuation or initiation of interactions. Twenty boys were video‐recorded during free‐play at six pre‐schools. The existence of social interaction between the opponents in the upcoming conflict was examined in the pre‐conflict period. The observed causes of conflict were determined and classified into five categories. The affiliative behaviors identified in the post‐conflict period were classified into six categories. Finally, whether or not conflicts were followed by communicative exchanges in the succeeding non‐conflict period was documented. The results revealed that the cause of the conflict is associated with whether opponents had established social interaction prior to conflict in the pre‐conflict period. Acceptance rates (for the various categories of affiliative behaviors) appeared to differ. A non‐random pattern of conflict progression was apparent, suggesting the conflict cause was related to the category of reconciliatory strategy shown by the individuals. The aggressor and the victim initiated reconciliation at similar rates, with the exception of verbal apologies, which were initiated most often by the aggressor. Finally, the data also showed that higher frequencies of social interaction between former opponents in the succeeding non‐conflict period were associated both with whether or not social interaction had occurred in the pre‐conflict period, and whether or not the conflict was reconciled. In conclusion, communicative factors preceding conflicts, and conflict cause, are distinctively correlated with both the use and the outcome of post‐conflict affiliation in pre‐school boys. Aggr. Behav. 00:000–000, 2005. © 2005 Wiley‐Liss, Inc.     

Variations of career decision ambiguity tolerance between China and the United States and between high school and college

The variation of career decision ambiguity tolerance (CDAT) by cultures and development stages was examined in a sample of Chinese high school students (n = 339), a sample of Chinese college students (n = 356), along with U.S. college students (n = 328). It was hypothesized that career decision ambiguity tolerance decreases when individuals experience more societal/cultural pressure on decidedness and responsibility for their career decision making. Based on the three-factor structure of CDAT (i.e., preference, tolerance, and aversion), measurement invariance was examined between Chinese and U.S. college students and between Chinese high school and college students. While the factor of tolerance was not upheld in both Chinese samples, the factors of preference and aversion were found to be structurally invariant across cultures and developmental stages. The analyses comparing means of preference and aversion found that U.S. college students had a higher level of preference relative to Chinese college students. It was also found that in comparison to Chinese high school students, Chinese college students had a higher level of aversion. The criterion validity of CDAT in Chinese culture was supported in the findings of preference and aversion being associated with career exploration and career indecision. The implication of this study was discussed along with its limitations and suggestions for future research.