Reflecting on Scientific Thinking: Children's Understanding of the Hypothesis-Evidence Relation

3 experiments were carried out to examine children's understanding of the role of covariation evidence in hypothesis formation. Previous research suggested that it is not until 8 to 11 years of age that children begin to understand how a given pattern of covariation supports a particular hypothesis about which factor is causally responsible for an observed effect. Experiments 1 to 3 employed a different (fake evidence) technique than previous research and showed that by 6 years of age most children understand how evidence would lead a story character to form a different hypothesis than the subject's own. Experiment 3 showed that most 6- and young 7-year-olds understand how a character's future actions (e.g., choice of an object) and predictions of future outcomes depend on the hypothesis he or she holds.     

Word reading and reading comprehension: stability, overlap and independence

Longitudinal twin data were analyzed to investigate the etiology of the stability of genetic and environmental influences on word reading and reading comprehension, as well as the stability of those influences on their relationship. Participating twin pairs were initially tested at a mean age of 10.3 years, and retested approximately five years later. Both word reading and comprehension were found to be highly stable, and genetic influences were primarily responsible for that stability. In contrast to studies with younger participants, no unique genetic influences were observed at follow-up testing in this older sample. High genetic correlations were obtained between word reading and reading comprehension at both ages, indicating common genetic influences. However, significant genetic influence on comprehension was also observed, independent of that on word reading. Although the phenotypic relation between the two measures appeared to decline across time, the genetic etiology of this relation was highly stable.     

Indirect cost rate variation for university research: Several conventional explanations do not work

The wide variation in indirect cost rates that universities charge the federal government in research grants and contracts has reduced the credibility of universities, as have accompanying charges that universities have been overreaching in indirect cost recovery. Many explanations for rate differences have been presented, but not systematically examined. Detailed cost and policy data from seven major research universities were used to simulate a standardization of costs and policies to eliminate several of the differences widely believed to contribute to rate variation. The result was an increase in rate variation, rather than the expected decrease. Furthermore, each of the universities could have charged the federal government a higher rate than actually charged, providing evidence that universities have not been over-reaching in indirect cost recovery.     

A decision-making model applied to career counseling

Christine Olson and Ellen McWhirter are doctoral students and John J. Horan is Professor and Director, Counseling Psychology Program, Arizona State University, 401 Payne Hall, Tempe, Arizona 85287-0611.     

Longitudinal Study of Reading Disability and Attention-Deficit/Hyperactivity Disorder: Implications for Education

ABSTRACT— The majority of children who receive special education services meet criteria for reading disability (RD) or attention-deficit/hyperactivity disorder (ADHD), but additional research is needed to understand the long-term academic outcome of children in these groups. Individuals with RD only ( N = 71), ADHD only ( N = 66), both RD and ADHD ( N = 51), or neither disorder ( N = 118) were identified through the ongoing Colorado Learning Disabilities Research Center twin study and retested 5 years later. Results of the follow-up testing indicated that, in addition to ongoing reading difficulties, individuals with RD exhibited higher rates of academic difficulties, depression, and adolescent-onset conduct disorder. Initial ADHD status was associated with academic and social difficulties and elevated rates of nearly all comorbid disorders 5 years later. The group with comorbid RD and ADHD had more stable reading deficits than the group with RD without ADHD and exhibited greater impairment than groups with either disorder alone on outcome measures of academic functioning and social difficulties. These results suggest that individuals with both RD and ADHD are at increased risk for negative outcomes as adolescents and young adults and that when RD and ADHD co-occur, interventions should be provided for both disorders.     

The formation of the willing citizen – Tracing reactive nihilism in late capitalist adult education

The role of education in citizen training has been well mapped out in youth education. What has been less studied is how this role comes into being in adult education. By providing illustrative empirical examples from a recently completed study of adult students enrolled in adult education, this article aims to offer a theoretical response to the question of the role of adult education in adult student citizen subjectivity formation. Taking on Diken’s concept of ‘reactive nihilism’, we wish to make the following arguments. First, that citizen formation in adult education, when students are asked about it, is actualised as processes of re(dis)covery of will in order to be(come) a successful and happy citizen in society. Secondly, that these processes point towards a role of adult education as one where these formation processes work in tandem with those of the reactive nihilists. This means that the citizen formation processes made possible in this educational site are those marked out by the desire to mobilise one’s will formation so that it adapts to the prevailing societal situation—that of late capitalism, which is a situation not considered by the adult students as possible to change.