Least-squares linear regression is the best of statistics and it is the worst of statistics. The reasons for this paradoxical claim, arising from possible inapplicability of the method and the excessive influence of "outliers", are discussed and substitute regression methods based on median selection, which is both robust and resistant, are…

A co-principal leadership model, where two individuals serve in one leadership position, is considered a special case of distributing leadership (Gronn & Hamilton, 2004). The co-principal leadership model has been suggested as an alternative organizational form that re-structures the role of the principal by enhancing the positive aspects of…

Graduates of a post-baccalaureate secondary education program working on certification in five core subject fields served as a sample for transcript review to investigate how well the variables of number of hours completed for content major course work, the content major grade point average (GPA), and the age of content major course work predicted…

Scholastic Aptitude Test, called SAT, has an immense influence in Chinese education. Most Chinese students choose to attend tutoring programs outside of the school curriculum to help them prepare. This study explores the tutoring programs both in China and the United States to assess variables that affect the quality of their preparation.…

Educational aspiration is one of the most important factors influencing an individual's educational attainment. Although students' aspirations are changeable and the stability of their aspirations is important for their goal reaching, previous studies are rather limited in their ability to capture aspiration changes due to their incomplete…

This study employed a quantitative research design to examine the predictive relationships between social presence and course retention as well as final grade in community college online courses. Social presence is defined as the degree of one's feeling, perception and reaction to another intellectual entity in the online environment. Course final…

This study examined the relationship between participation in organized youth sport and attitude to physical education (PE) during adolescence and physical activity in young adulthood. The sample comprised 630 participants who completed questionnaires over a 10-year period. Analysis of variance and regression were used to examine the relationship…

The purpose of the current study is to examine language influence in sequential bilinguals. Specifically, this study evaluates whether performance in a first language predicts success in the acquisition of a second language nine months after exposure to the second language begins. Forty-nine Spanish-speaking children attending English-only…

The present study examined whether deficits in inhibitory control in preschool-aged children are predictive of attention-deficit/hyperactivity disorder (ADHD) symptoms and certain social difficulties in middle childhood, specifically third grade. Although many studies have examined the concurrent relationships among disinhibition, ADHD and social…

Studying factors that predict bachelor's degree attainment has generated considerable empirical interest over the past few decades. Relatively few studies, however, have focused on community college transfer students and the unique factors that predict their educational outcomes. Utilizing the National Education Longitudinal Study of 1988 and…

Intention, self-efficacy, perceived susceptibility, perceived benefits, and subjective norms are key constructs of health behavior theories; their predictive validity for cancer screening has not been ascertained in multiethnic populations. Participants were 1,463 African American, Chinese, Filipina, Latina, and White women aged 40 to 74…

Group activities are an excellent way to enhance learning. When students are actively involved in a relevant project, understanding and retention are improved. The proposed activity introduces a timely and interesting project typical of the type encountered in statistical practice. Using the computer to successfully developing an appropriate model…

Preschoolers' theory of mind (ToM) was examined in relation to emotional features of their conflicts with siblings, using mothers as privileged informants. Fifty-four children aged 3 to 5 years and their 54 mothers took part. Children were given 10 standard false belief tasks and a standardized language test. Mothers completed questionnaires,…

Purpose: To determine if rural residence is independently associated with different access to health care services for children eligible for public health insurance. Methods: We conducted a mail-return survey of 10,175 families randomly selected from Oregon's food stamp population (46% rural and 54% urban). With a response rate of 31%, we used a…

Objective: To examine the effects of early maternal and paternal depression on child expressive language at age 24 months and the role that parent-to-child reading may play in this pathway. Participants and methods: The 9-month and 24-month waves from a national prospective study of children and their families, the Early Childhood Longitudinal…