Stichwort: Bildungsökonomie

Ohne Zusammenfassung     

Extinction revisited: Similarities between extinction and reductions in US intensity in classical conditioning of the rabbit’s nictitating membrane response

The mechanisms of extinction were examined by reducing the intensity of the unconditioned stimulus (US) after acquisition training to determine whether such reductions lie on a continuum with CS-alone extinction. The experiments revealed that reductions in US intensity yielded extinction-like effects. Specifically, there were proportional reductions in the daily mean level of responding across sessions. There were also persistent within-session declines and between-session increases of responding analogous to spontaneous recovery. Surprisingly, even when US intensity was held constant, within-session declines and between-session increases were apparent. The results are discussed with respect to possible contributions from unlearning, new learning, generalization decrement, and nonassociative loss, especially CS-specific attentional changes and CR-specific reactive inhibition.     

时代呼唤我国设置科学教育本科专业

本文针对经济全球化、教育国际化的时代背景,从我国当前基础教育课程改革、教师专业化发展趋势、科学教育学科建设以及科学普及事业的发展四方面论述了我国新一轮普通高等学校学科专业结构调整中设置科学教育本科专业的必要性。     

Culture,education, thought

Doctor of psychological sciences. Member of the Academy of Pedagogical Sciences. Honorary member of the American Academy of Arts and Sciences. Founding director of the Institute of Mankind.     

Foraging on the radial-arm maze: Effects of altering the reward at a target location

Thirsty rats were trained to collect small water rewards from the end of each arm of an eight-arm radial maze. During these training trials and subsequent testing trials, the subjects were allowed to choose a maximum of eight arms. “Preference” for a target maze location was studied by noting when, in the sequence of eight choices, the target was selected. During testing, when one maze location was consistently devoid of water, rats decreased their preference for this arm over trials (Experiment 1). Similarly, rats that learned a saccharin-lithium association demonstrated lower preferences for a maze location that consistently held the conditioned saccharin solution. This was true for animals that received saccharin-lithium conditioning on the maze (Experiment 3A) and for animals conditioned to saccharin in a separate context (Experiment 3B). An increase in preference for a target maze location consistently containing a sweet chocolate milk solution was observed in animals that were water- and food-deprived (Experiment 2). These studies demonstrate that animals will modify their responses toward (preferences for) maze locations that predictably contain an altered reward.     

Differences in Graduation Rates Between Young Black and White College Students: Effect of Entry into Parenthood and Historically Black Universities

Black and White students who enrolled in college by age 20 were selected from a national probability sample, in order to estimate the prevalence of having children and the effect of having a child on probability of graduation with a bachelors degree. Black students reported significantly higher rates of having children than White students, but rates for Black students at historically Black universities were similar to those of Black students at predominantly White universities. After controlling for family background, achievement, and other student characteristics, having a child within 5 years of starting college generally reduced the probability of graduating with a bachelors degree for Black women and White women and men. The independent effect of attending a historically Black college was significantly positive for Black women but not statistically significant for Black men.     

“I Think About It All The Time”: A 12-Year-Old Girl’s Internal Crisis With Racism and the Effects on her Mental Health

I conducted an ethnographic study, situated within the conceptual framework of Critical Race Theory, which illustrates one child’s experiences with racism. The study was conducted in an urban after-school program, and explores issues of racism in both the school and community settings. Utilizing the storytelling aspect of Critical Race Theory, I explore the racial experiences of a 12-year-old African-American girl, and the dichotomous emotions of sadness and anger that emerge. I describe the risk to this child’s emotional well-being, and suggest a need within the mental health field to create a framework to deal with the trauma caused by racism. Amy L. Masko is affiliated with the Grand Valley State University. She is a professor of English Education, preparing pre-service teachers to teach elementary literacy. Dr. Masko’s research interests are in urban education, after school programs, and multicultural education. She is also an educational consultant in the area of diversity in education and literacy education. Address correspondence to Amy L. Masko, Grand Valley State University, 221 Lake Huron Hall Allendale, MI 49401; e-mail: maskoa@gvsu.edu     

What’s new in computers

This article describes the features of the latest International standard for Fortran known as Fortran 95 which was published in October 1996.     

Teacher–Child Interactions in Early Head Start Classrooms: Associations With Teacher Characteristics

ABSTRACT

Research Findings: The current study examined characteristics of 71 Early Head Start lead teachers in relation to classroom interactions with infants and toddlers. Measured teacher characteristics included education, years of experience, beliefs about child rearing, depressive symptoms, and the temperamental characteristics of positivity and frustration. Teacher–child interactions were measured using the Classroom Assessment Scoring System, Toddler Version (La Paro, Hamre, & Pianta, 2012). Results indicated that field of degree was directly associated with the majority of dimensions of teacher–child interactions. Examination of teachers’ years of experience and intrapersonal characteristics revealed a number of significant interactions, indicating that teacher experience and appropriate beliefs may serve as protective factors in the presence of psychosocial risk factors. Practice or Policy: Overall, our findings suggest that both early childhood education degrees and years of experience are directly or indirectly associated with multiple dimensions of teacher–child interactions, confirming that these patterns established for preschool teachers hold for teachers of infants and toddlers. These results also suggest that years of experience and progressive beliefs about children may be especially important for teachers who are depressed or who have low levels of positivity and high levels of frustration. Implications for future research, as well as preservice and in-service professional development, are discussed.     

Institutional Expenditures and Student Engagement: a Role for Financial Resources in Enhancing Student Learning and Development?

The concept of student engagement is receiving increased attention from researchers, higher education leaders, and the general public in recent years. This increased attention represents a shift from the more traditional resource and reputation model of academic quality to a model that emphasizes institutional best practices and student experiences that enhance student learning and development. At the same time, institutions face rising operating costs and the public faces rising costs of attendance. However, relatively little effort has been made to explore the potential relationship between these two important research and policy areas. This study examined the relationship between institutional expenditures and student engagement based on data from 142 colleges and universities. The results of an OLS multiple regression model, including a factor for student engagement as the dependent variable, suggest that administrative expenditures are negatively related to student engagement. These results support further exploration of potential complex causal links between expenditures and engagement and may provide support for initiatives to reverse historical trends and adjust institutional spending.I would like to thank Ms. Cathy Statham for assistance in obtaining data for this study.