In this article, we describe and evaluate a Web-based interactive tutorial used to present hypothesis testing concepts. The tutorial includes multiple-choice questions with feedback, an interactive applet that allows students to draw samples and evaluate null hypotheses, and follow-up questions suitable for grading. Students either used the…

While resumptive pronouns (RPs) are generally not allowed in English relative clauses, Chinese allows the use of RPs in indirect object position and genitive position but not in subject and direct object positions. Arabic languages allow RPs in direct object position as well as in indirect object position and genitive position, although not in…

Performance on a wide variety of memory tasks can be hypothesized to be influenced by processes associated with controlling the contents of memory. In this project 328 adults ranging from 18 to 93 years of age performed six tasks (e.g., multiple trial recall with an interpolated interference list, directed forgetting, proactive interference, and…

The present research evaluated an intervention, derived from the "extended contact hypothesis," which aimed to change children's intergroup attitudes toward refugees. The study (n=253) tested 3 models of extended contact among 5- to 11-year-old children: dual identity, common ingroup identity, and decategorization. Children read friendship stories…

On the basis of predictions from social comparison theory (L. Festinger, 1954) and informed by findings from the social comparison and eating disorder literatures, hypotheses were tested regarding the social comparison behaviors of women with eating disorder symptoms and their asymptomatic peers. Results indicated differentiating social-cognitive…

Despite the developing infusion of three-dimensional, technological imagery, little has been done to explain the effects of two-dimensional versus three-dimensional imagery on the learning process. This study examined the effects of two-dimensional stimuli and three-dimensional stereoptic stimuli on spatial representation in drawings. A scene was…

Right hemispheric dominance in unconscious emotional processing has been suggested, but remains controversial. This issue was investigated using the subliminal affective priming paradigm combined with unilateral visual presentation in 40 normal subjects. In either left or right visual fields, angry facial expressions, happy facial expressions, or…

Goodness-of-fit (GOF) indexes provide "rules of thumb"?recommended cutoff values for assessing fit in structural equation modeling. Hu and Bentler (1999) proposed a more rigorous approach to evaluating decision rules based on GOF indexes and, on this basis, proposed new and more stringent cutoff values for many indexes. This article discusses…

Proposes that content- or skill-based labs can be revised to explicitly involve the scientific method by asking students to propose hypotheses before making observations. Students' self-assessment showed they felt that they learned a great deal from this style of labs and found the labs to be fun; however, students felt that they learned little…

A paradox is building in American sociology around the practice and teaching of statistical methods. On the one hand, this is a time when the quantification of the discipline is well established, when statistical applications in sociological research continue to reach new heights of sophistication, and when the accumulation of such skills remains…

Archaeologists have used material artifacts found in a physical space to gain an understanding about the people who occupied that space. Likewise, as users wander through a digital library, they leave behind data-based artifacts of their activity in the virtual space. Digital library archaeologists can gather these artifacts and employ inductive…

Language-specific phonological processes routinely affect the pronunciation of words spoken in context, but do not appear to interfere with spoken word recognition. Five experiments are presented in which native and non-speakers of Hungarian and Korean monitored for segments in assimilated and non-assimilated control contexts related to…

The study explored whether children with high functioning autism (HFA), Asperger syndrome (AS), and pervasive developmental disorder not otherwise specified (PDD-NOS) can be differentiated on the Children's Communication Checklist (CCC). The study also investigated whether empirically derived autistic subgroups can be identified with a cluster…

Test accommodations are often given to students with disabilities as one means of removing construct-irrelevant barriers to proper measurement of their knowledge, skills, and abilities. However, the practice is controversial. This article reviews numerous studies that focused on the effects of accommodations on test performance. Consistent…

College students were exposed to two pairs of mathematics assignments. Assignment Pair A included a high-effort assignment containing 18 long three-digit ? two-digit (3?2) multiplication problems with all numerals in each problem being equal to or greater than four and a moderate-effort assignment that contained nine long problems and nine…