The article examines reasons for discrepant findings in two studies of attention differences in learning disabled students, focusing on four interacting factors in experimental research: task, materials, context, and subject characteristics. It is suggested that attentional deficits are not necessarily the underlying problem for all students with…

Explores content or contextual validity of social rule classifications produced by sample of 12-year-old child coders. Analyses of variances revealed that categorization schemes generated by child coders were contextually valid as determined by raters' mean ratings. (Author/RWB)

The ability to think critically in the presence of arguments with essential quantitative elements, most often graphical elements, will become an essential skill for educated citizens in the future. This paper takes one specific graphical display, a narrow series of observational and interpretational tasks related to a graph, and using a small set…

Describes research in two different domains: novices learning programing, and school pupils interpreting Cartesian graphs. Findings in each domain are discussed, but the main focus is an examination of the extent to which general principles and issues apply across both domains. Research implications for instructional design are discussed.…

Theories of learning and instruction usually are grounded in psychological and epistemological assumptions. However, these theories ignore the child in relation to his or her cultural and institutional context and ignore the schoolteacher from the social context that regulates the process of transmission and acquisition of knowledge and skills.…