Some of the methods originally used to find relationships between reliability and power associated with a single measurement are extended to difference scores. Results, based on explicit power calculations, show that augmenting the reliability of measurement by reducing error score variance can make significance tests of difference more powerful.…

Two articles discuss the controversy about the relationship between reliability and the power of significance tests in response to the discussion of Donald W. Zimmerman, Richard H. Williams, and Bruno D. Zumbo. Lloyd G. Humphreys emphasizes the differences between what statisticians can do and constraints on researchers. Zimmerman, Williams, and…

A model of the sources and consequences of mismatches between gestures and speech is presented that argues that the transitional knowledge state is the source of the mismatch and that such mismatches signal that a child is in a transitional state of concept acquisition and is ready to learn. (SLD)

Measurement and psychometric quality of the Sternberg task (S. Sternberg, 1966, 1969), a memory search task, was investigated with 78 undergraduates. Individual performance was fairly homogeneous across responses, fairly unstable over time, and fairly stable across stimulus content. Implications for individual differences research are discussed.…

Presents a theory of cognitive development that postulates a general cognitive processing system, a hypercognitive system governing self-regulation, and specialized structural systems responsible for processing different reality domains. Suggests five principles that serve as organizational pivots of developing cognition. Reports the results of…

Cognizant of individual learning differences, the Rhinebeck (New York) School District refused to settle for mandated Regents exams. Staff developed a successful exhibition program requiring all students in the 5th, 7th, 10th, and 12th grades to demonstrate their knowledge through a performance judged by using various rubrics. (MLH)

In 1992, a group of teachers, principals, and central-office administrators at a Wisconsin elementary school developed an effective differentiated teacher-supervision process. Teachers enjoy the flexibility of choosing among three options: a cooperative-clinical supervision group, a self-directed group, and a collegial professional-development…

As educators introduce new technology into a district, school, or classroom, it is important to take advantage of children's natural ability, enthusiasm, and willingness to master new skills. Certain activities such as journal writing, picture-digitizing projects, and designated student experts help place the power of technology squarely in…

Two studies investigated developmental changes, and inter-linguistic and inter-individual variations, in the expansion and composition of young French children's early lexicons. Results indicated that lexical productivity strongly increased with age, whereas lexical diversity showed little developmental progression. Inter-individual variability in…

A review of the literature and research on the academic and social self-concepts of gifted adolescents reveals the importance of considering the unique talents of the individual rather than considering gifted students as a homogeneous group. Implications of the research for encouraging positive self-concepts in these students are drawn. (Author/DB)

Aims to delimit the possible individual differences in feelings of difficulty experienced in relation to mathematics. Shows that feelings of difficulty form their own system, mainly influenced by performance and cognitive ability; also, gender interacts with personal and task characteristics. Discusses educational implications of these results.…

Argues that the individualistic-collectivistic dichotomy results in mislabeling both cultures and individuals. Discusses ways in which individualistic concerns with independence and collectivistic concerns with interdependence coexist in Western and non-Western cultures. Outlines a theoretical framework explaining the coexistence of diverse social…

Research in temperament attempts to explain the normal range of individual differences in adjusting to stimuli, activities, and persons in the environment. Mini-series reviews temperament constructs and relates them to development of children's interpersonal and academic difficulties. They show how understanding temperamental roots of…

Sex differences are investigated in the use of sexual aggression in the dating relationships of single adult heterosexuals (N=380 males, 241 females; mean age 22.5). This study replicates and extends previous work by simultaneously testing the predictive ability of variables from three domains: social-environment, relational-environment, and…

A middle-school teacher humorously observes seven other intelligences of students: random thinking; virtual memory void (erasing entire sections of personal memory); antigravity (balancing on two chair legs); intravacancy (achieving perfect, effortless aplomb); inter-Origami (intricate note-folding); stealth-kinesthetic (peashooting spitballs…