In the social sciences, evaluating the effectiveness of a program or intervention often leads researchers to draw causal inferences from observational research designs. Bias in estimated causal effects becomes an obvious problem in such settings. This paper presents the Heckman Model as an approach sometimes applied to observational data for the…

Asserts that both the Feuer, Towne, and Shavelson article on scientific culture and educational research and the recent National Research Council (NRC) report must be understood in the context of current federal discourse focused on experimentally derived causal explanations of educational program effectiveness. Notes that the NRC report risks…

Two experiments examined the role of analogy in the development of a situation model of a target passage, specifically, whether an analogous source text could improve comprehension and inferencing about causal mechanisms in the target. Responses of analogy subjects were more likely to include given and inferred information that comprised the…

Three experiments examined development of perceptual causality in 3- to 9-year-olds. Findings indicated that participants of all ages assigned contact events (A moves toward B, which moves upon contact) to the physical domain and non-contact events (B moves before contact) to the psychological domain. Participants chose causality more often for…

Assessed 8- to 16-year-olds of 64 mothers with recurrent unipolar or bipolar affective disorders, chronic medical illness, or no disorder. Results supported a model in which children's outcomes 6 months later were caused by maternal functioning and characteristics of the child. (RH)

The logical flaw of using the methods of path analysis and structural equation modeling to make causative conclusions is demonstrated. A proper evaluation of the role of investigation versus experimentation is cited in the work of W. G. Cochran as explicated by D. R. Rubin (1983). (TJH)

A study was conducted of differences in processing speed and recall with 61 10th-grade biology students studying a unit on plants and controls who took only the unit tests. Processing speed and recall improved as much for students completing the unit as for controls. (SLD)

Suicide is analyzed as a motivation to escape from adversive self-awareness. The causal chain is traced from initial failures that are attributed internally because of a cognitively deconstructed state. (SLD)

According to the Web of Causation epidemiologic model, every disease has multiple causes, and every cause also has multiple causes. The article describes a Web project in an introductory epidemiology course and includes specific guidelines for the written project and a model student web. (SM)

Examined are first-year medical students' (n=160) explanations of complex concepts in cardiopulmonary physiology following a lecture series. The results revealed systematic misconceptions by the students in developing a pathophysiological model of the problem. The implications for science instruction within a medical curriculum are discussed.…

Two causal models are presented to describe influences on the performance of students with learning disabilities. The first model associates reading and math with three domains: neuropsychological, linguistic, and social-behavioral. The second model involved relationships among selected individual variables and suggests that learning disability is…

Changes in children's understanding of experimentation are examined. Sixteen fifth and sixth graders worked on two experimentation problems consistent with an engineering and science model, respectively. The science model was associated with broader exploration, more selectiveness about evidence interpreted, and greater attention to establishing…

Thirty-one male and 49 female undergraduate students were randomly assigned to 1 of 8 experimental conditions to investigate whether importance could moderate mood effects on student performance attributions. Outcome importance significantly increased mood biases in perceptions of causal locus but not stability. Other moderating effects are…

Explores the role of theory in strengthening causal interpretations in nonexperimental research. Evaluators must conduct theory-driven research, concentrating on "small theory," in that the focus is on the explanation of processes specific to the program being evaluated. Theory-guided treatment research must be programmatic and…

Discusses Lawrence A. Hirschfeld's (1995) experiments, which Hirschfeld claims demonstrate that preschoolers use a biologically grounded theory in reasoning about race. Argues that the methods used cannot address the issue and therefore, the results do not support Hirschfeld's claims. Maintains that the experiments fail to demonstrate that 4- and…