MODELR—Model building and model modification for instruction

An integrated set of three computer programs that enable the implementation and student investigation of computer models of behavioral phenomena is described. These models are intended as tools for aiding in the instruction of undergraduate social science courses in research methods. Each program provides for natural language interaction with one of three classes of users: A “Modeler,” who implements a model of some behavioral phenomenon; an “Instructor,” who tailors his own or others’ models for his course of instruction; and a “Student Experimenter,” who applies an experimental design to the model and receives synthetic data in return. None of these users need have any prior computer expertise nor do they depend on external documentation on how to use the programs.     

Paradoxical preference for more frequently occurring negative stimuli and for less frequently occurring positive stimuli as a function of amount of training in simultaneous discrimination learning

Development of a preference for more frequently occurring negative stimuli was found in a within-subject design. In this experiment, pigeons learned two simultaneous problems with an unequal number of training trials. At various stages in training, for example, the more-trained negative stimulus was paired with the less-trained negative stimulus for a single preference trial. These probe trials pointed to a swing in stimulus function in negative stimuli which also occurred at an earlier stage in positive (reward-correlated) stimuli. The paradoxical preference for less-trained positive over more-trained positive stimuli was found in this study, confirming the earlier reported phenomenon. The paradoxical preference for more-trained negative stimuli was discussed in terms of a frustration analysis. A symmetrical, albeit positive, emotional factor was discussed with regard to the paradoxical findings with positive probe trials.     

The State of the Question in the Study of Plato: Twenty Year Update

This article updates “The State of the Question in the Study of Plato” (Southern Journal of Philosophy , 1996 ) based on research covering the years from 1995–2015. Its three major parts examine: (1) how the mid‐twentieth‐century consensus has fared, (2) whether the new trends identified in that article have continued, and (3) identify trends either new or missed in the original article. On the whole, it shows the continuing decline of dogmatic and nondramatic Plato interpretation and the expansion and ramification of the more literary, dramatic, and nondogmatic “new Platonism.” What was a growing insurgency twenty years ago can now be described as a, if not the , dominant approach.     

Sometimes happy people focus on the trees and sad people focus on the forest: context-dependent effects of mood in impression formation

Research indicates that affect influences whether people focus on categorical or behavioral information during impression formation. One explanation is that affect confers its value on whatever cognitive inclinations are most accessible in a given situation. Three studies tested this malleable mood effects hypothesis, predicting that happy moods should maintain and unhappy moods should inhibit situationally dominant thinking styles. Participants completed an impression formation task that included categorical and behavioral information. Consistent with the proposed hypothesis, no fixed relation between mood and processing emerged. Whether happy moods led to judgments reflecting category-level or behavior-level information depended on whether participants were led to focus on the their immediate psychological state (i.e., current affective experience; Studies 1 and 2) or physical environment (i.e., an unexpected odor; Study 3). Consistent with research on socially situated cognition, these results demonstrate that the same affective state can trigger entirely different thinking styles depending on the context.     

Effects of a school-based cognitive-behavioral intervention for ADHD children

Two variations of school-based cognitive-behavioral training (CBT) program were compared to each other and to a waiting-list control condition in the treatment of children with attention-deficit hyperactivity disorder (ADHD). The experimental interventions included a multicomponent condition that provided coordinated training programs for parents, teachers, and children and a teacher-only condition that offered training for classroom teachers only. Evaluation of outcome occurred at pre-intervention, post-intervention and at 6-week followup periods. Depedent measures included classroom behavior observations, teacher ratings of child behavior, child self-report, and teacher ratings of adjustment. The multicomponent CBT condition was significantly better than the other conditions at improving observed off-task/disruptive behavior at post-test. This improvement was maintained at followup, although treatment condition differences were no longer significant. There were no treatment condition differences on any other measures at postintervention or followup. It was concluded that the intervention had minimal short-term effects on the ADHD children. The results are discussed within the context of several methodological limitations of the study which serve as proposals for continued research in this area.The authors gratefully acknowledge the support and assistance of the faculty and staff at Echo Park, Cedar Park and Westview Elementary Schools (Rosemount, MN, Independent School District), and the parents and children who participated in this study. The authors would also like to extent special thanks to the principals of these schools, Mr. Robert Keaton, Mr. William Mack and Mr. Marvin Skinner, and the school psychologists servicing these schools, Ms. Sheila Peterson, Ms. Ann O'Brien, and Mr. Mark Kaloski, for their commitment and service to children with attention-deficit hyperactivity disorder.     

The landscape of time in literary reception: Character experience and narrative action

Abstract

This experiment examined responses to excerpted episodes from short stories that either focused on action or on the experiences of the characters. The effects of instructional sets to approach the texts from the viewpoint of subjective involvement or objective detachment were also studied. The two story types and two reading sets were factorially combined in a within-subjects design. Scale ratings of the story excerpts and reading times (syllables per second) were measured. A total of subjects (20 males and 20 females) read six segments from each of the episodes as quickly and accurately as possible. Pretest data were obtained for each segment indicating how much it “provided insight into the characters' experiences”, and its level of suspense and surprise. Segments which “provided in sight” were read more slowly, whereas surprising segments were read more quickly. Under the Subjective Set, subjects slowed the pace of reading if they judged the text to be “rich in meaning about life”. For the Objective Set, stories that were judged to have evoked “images” were read more slowly. Females were more responsive to the Subjective Set than were the males, finding the stories to be “richer in meaning” and more “personally relevant”. Females also slowed their reading pace for segments that they judged to be “rich in meaning about life”, while males slowed down if the stories evoked “images”.     

The contribution of executive function and social understanding to preschoolers’ letter and math skills

The influence of executive function and social understanding on letter and math skills was examined in 129 3–5-year-olds. Tasks were administered to measure working memory, inhibition, social understanding, letter and math skills, and vocabulary. Using latent variable analyses, multiple models were compared in order to examine the influence of executive function and social understanding on participants’ emerging academic skills. In the best-fitting model, working memory contributed to letter and math skills, over and above inhibition, social understanding, age, and vocabulary. Inhibition and social understanding did not uniquely contribute to letter and math skills, but significant relations were found among working memory, inhibition, and social understanding. Findings are discussed with respect to improving ways to examine the complex relations among preschoolers’ executive function, social understanding, and school readiness skills.     

II. A reply to Siegel on Kuhnian relativism

Siegel argues that the Kuhnian relativism presented in ‘Kuhn's Epistemological Relativism’ fails because it neglects the possibility of rational choice in science between rival paradigms’ own incommensurable standards on the basis of ‘paradigm‐neutral external standards’. In reply, it is argued (1) that Siegel has given no reason to believe that there are such external standards in science, (2) that the mere ‘possibility’ of such standards in scientific debate is not sufficient to vitiate Kuhn's relativism, (3) that the actual existence of rational debate concerning the internal standards of rival paradigms does not entail (as Siegel claims) the existence of ‘paradigm‐neutral external standards’, and finally (4) that Kuhn's relativism concerning standards in science does not lead (as Siegel claims) to a ‘reductio’ which undermines the philosophical standards implicit in Kuhn's argument.