Multilevel modeling allows for the simultaneous analysis of data gathered at more than 1 unit of analysis (e.g., children nested in schools). It is often used to examine the effects of various contexts on individual differences in change. This paper promotes the application of multilevel models to longitudinal dyadic data in family research. By…

Introduction: In this paper we study the possible influence of extra-curricular activities (study-related and/or sports) on academic performance of first- and second-year pupils in "Educacion Secundaria Obligatoria (ESO)" [N.T. seventh- and eighth-graders]. Method: We randomly selected 12 schools in the city (9 public and 3 private), and…

A sense of direction (SOD) computes the body's facing direction relative to a reference frame grounded in the environment. The authors report on three experiments in which they used a heading-recall task to tap the functioning of a SOD system and then correlated task performance with self-reported SOD as a convergent test of the task's construct…

The purpose of this study was to explore individual differences in children's tense onset growth trajectories and to determine whether any within- or between-child predictors could account for these differences. Twenty-two children with expressive vocabulary abilities in the low-average to below-average range participated. Sixteen children were at…

Trend data show that while the numbers and proportions of undereducated youth are falling, undereducation in the eighties, especially among minority youth, is considerable and persistent. This study uses a population-based definition of undereducation for which trend data are available for Whites and Blacks, beginning in 1967, and for Hispanics in…

This paper examines students' self-motivation in mathematics learning between girls and boys using secondary analysis of the Third International Mathematics and Science Study (TIMSS) conducted in 2003 by the International Association for the Evaluation of Educational Achievement (IEA) involving eighth graders. Components of self-motivation include…

This paper reports on three studies of shy behavior in Mainland Chinese children. In Study 1 (N = 107, M age = 10.05), a Chinese Shyness Scale (CSS) was developed based on Chinese teachers' open-ended descriptions of children's shy behavior. In Study 2 (N = 388, M age = 10.80) and Study 3 (N = 198, M age = 10.20), the construct validity of the two…

Prisoner's Dilemma is a common game theory scenario in which two players must choose between acting cooperatively or out of pure self-interest. What a player decides affects not only his own outcome but also that of the other player. "Friend or Foe," a TV game show that has appeared on the cable Game Show Network (GSN), places pairs of contestants…

The primary purpose of this study was to examine significant differences, if any, in student achievement in the area of math and science of students taught by traditionally certified teachers and alternatively certified teachers. This study examined alternatively certified teachers, as identified from through the Georgia TAPP (Teacher Alternative…

Background: The Waterford Early Math & Science (WEMS) program is a comprehensive educational software program designed to build math and science skills and concepts in grades K-2, alone or to supplement existing curricula. The program's capability to individualize lessons, assess and track student progress, and reteach lessons is aimed at…

Weighting and variance estimation are two statistical issues involved in survey data analysis for large-scale assessment programs such as the Higher Education Information and Communication Technology (ICT) Literacy Assessment. Because survey data are always acquired by probability sampling, to draw unbiased or almost unbiased inferences for the…

The objective of this study was to explore a new method of analyzing the performance of substate economies. Conventional analyses of economic diversity and growth are limited by their reliance on static measures of economic structure. Such measures do not capture the patterns of growth dynamics or structural change a region may be experiencing.…

This study was designed to determine item bias by sex on a test of spatial visualization administered to middle school students. Two chi square techniques were used to assess item bias: the Scheuneman C2 and the Camilli chi square. The direction of bias was indicated by assigning positive signs to the chi square components contributed by one group…

This report examines the poverty status of persons in 1984 and 1985 using the complete panel file of the 1984 Survey of Income and Program Participation (SIPP) and compares those findings to poverty estimates based on the Current Population Survey (CPS). Although the CPS is used to obtain official estimates of persons in poverty, SIPP captures the…