In theory, not-for-profit organizations will be characterized by higher production costs per unit of output than for-profit producers of otherwise-identical goods/services, since profit maximization implies cost minimization per unit of output; breaking even does not imply cost minimization and, indeed, may imply inflated costs. We explore the…

The conjoint retention hypothesis (CRH) claims that students recall more text information when they study geographic maps in addition to text than when they study text alone, because the maps are encoded spatially (Kulhavy, Lee, & Caterino, 1985). This claim was recently challenged by Griffin and Robinson (2000), who found no advantage for maps…

Many important research hypotheses concern conditional relations in which the effect of one predictor varies with the value of another. Such relations are commonly evaluated as multiplicative interactions and can be tested in both fixed-and random-effects regression. Often, these interactive effects must be further probed to fully explicate the…

This paper reports an empirical study comparing the role of discourse and knowledge representations (graphical evidence mapping) in face-to-face versus synchronous online collaborative learning. Prior work in face-to-face collaborative learning situations has shown that the features of representational notations can influence the focus of…

Seventy-two 2-year-olds participated in a study designed to test two competing accounts of the effect of contextual change on children's ability to learn a word for an object. The mechanistic account hypothesizes that any change in context that highlights a target object will lead to word learning; the social-pragmatic account maintains that a…

The aim of this research was to show the importance of instruction in learning a specific set of words. Two different tasks were used in the experiment: one in which subjects were required to fill in sentences and choose the appropriate answer in a multiple choice exercise (lexical test), and the other was a rating task designed to assess semantic…

Background: Postpartum depression (PPD) is considered a major public health problem that conveys risk to mothers and offspring. Yet PPD typically occurs in the context of a lifelong episodic illness, and its putative effects might derive from the child's exposure to other episodes, in pregnancy or later childhood. The aim of the study is to test…

Recently, concerted efforts have been made to encourage teachers to utilize technology within the classroom. Just as other modes of presentation style have implications for students' perceptions of their classroom experiences, so, too, might teachers' use of technology. The current study investigated this possibility, as well as whether the…

Since the passage of the first Charter School Law in Minnesota in 2001, there have been many studies that have examined the effect of Charter schools on student achievement with very mixed results. The Missouri legislature passed legislation in 1998 permitting the establishment of charter schools in a metropolitan school district or in an urban…

The number of online education courses available to those seeking higher education have been increasing exponentially, offering opportunities to students who would not otherwise have been able to do so, as well as offering options for those who may have been able to attend classes on campus, but would prefer to pursue their course of study at…

This review presents an overview of selected articles on the leniency hypothesis: the idea that students give higher evaluations to instructors who grade more leniently. Such articles comprise a small subset of the voluminous research on student evaluations of teaching (SETs). In this diverse literature, research methods and aims have frequently…

This study examined the proposition derived from the integrative developmental contextual theory (IDCT) (Bar-Tal & Teichman, 2005; Teichman & Bar-Tal, in press) that contextual circumstances determining collective self esteem (i.e. conflict and social status), and developmental stage in which identity development is a central issue (pre-…

Moffitt's developmental taxonomy of adolescence-limited and life-course-persistent offenders has received much empirical attention, with researchers focusing on the etiology and trajectory of offending between the two groups. Recently, Moffitt articulated a new hypothesis that has yet to be empirically assessed--that life-course-persistent…

The authors examine student cheating based on implicit and explicit definitions of cheating. Prior to being provided a definition of cheating, students reported whether they had cheated. Students were then provided a definition of cheating and asked to rereport their cheating behaviors. Results indicate that students do not understand what…

Fuzzy trace theory posits that during development the use of verbatim information for solving transitive relationships shifts to the use of gist information. In cognitive developmental research that uses a cross-sectional design, the binomial mixture model is often used to identify such shifts. Because the binomial mixture model assumes equal task…