Integrating the ethical and social context of computing into the computer science curriculum

This paper describes the major components of ImpactCS, a program to develop strategies and curriculum materials for integrating social and ethical considerations into the computer science curriculum. It presents, in particular, the content recommendations of a subcommittee of ImpactCS; and it illustrates the interdisciplinary nature of the field, drawing upon concepts from computer science, sociology, philosophy, psychology, history and economics.     

Stability of anxious symptomatology in children

The stability of anxiety states and symptoms was assessed in a sample of 150 anxious and nonanxious children. A number of assessment methods including a semistructured interview, self-report instruments, psychophysiological measures, and parental reports were used initially and at intervals up to 6 months later. The majority of children with a diagnosed anxiety disorder at the initial assessment still manifested significant symptomatology at the 6 month follow-up. However, stability of specific anxiety symptoms when assessed by self- and parental reports was mixed. With respect to psychophysiological assessment, stability of responses was evident at 2 weeks but not after 6 months. Results are discussed in terms of the stability of diagnoses and symptomatology, and the need for thematically relevant self-reports and behavioral assessment tasks. Recommendations are made for the development of a reliable, multimethod strategy to assess the multiple domains of childhood anxiety.This study was supported in part by NIMH Grant MH43252.     

DNA markers associated with general and specific cognitive abilities

Multivariate quantitative genetic research suggests a hierarchical model of cognitive abilities where genetic effects are largely general, cutting across most cognitive abilities. Some genetic effects, however, are specific to certain cognitive abilities. These results lead to a hypothesis for molecular genetic research: Although most genes associated with one cognitive ability will be related to other cognitive abilities, some genes will be specific to a particular cognitive ability. The current research explored this hypothesis in an analysis of data in specific cognitive abilities from 86 children from 6 to 12 years of age from a larger allelic association study of general cognitive ability. Eight DNA markers were entered simultaneously in separate multiple regression analyses predicting each of four specific cognitive ability factors (Verbal, Spatial, Perceptual Speed, Memory), as well as WISC-R subtest scores. Four marjers (CTGB33, EST00083, HLA, and SOD2) showed similar effects across the cognitive ability scales, suggesting that they are related to general cognitive ability (g). These associations became negligible when the effects of ‘g’ (WISC-R IQ) were removed. Three markers (ADH5, DM, and NGFB) continued to be significantly associated with specific cognitive ability scales after the effects of ‘g’ were removed. Although preliminary, these molecular genetic results support the hierarchical model predicted by quantitative genetic research.     

Peer Tutoring: Teaching Students with Learning Disabilities to Deliver Time Delay Instruction

This study evaluated the effectiveness of a peer-mediated constant time delay procedure for teaching written spelling to fourth- and fifth-grade students identified as learning disabled. The six peer tutors (each with learning disabilities) taught each other to produce the written spelling for 15 five- to eight-letter words using a 3-s delay and a visual model prompt. A multiple probe design across behaviors (word sets) was used to evaluate the procedure. Data were collected on the number of sessions to criterion, trials to criterion, number and percent of errors, and direct instructional time. The classroom teacher prepared students to serve as tutors using a describe-model-guided practice-feedback sequence. Pre- and post-measures were conducted of generalization of the tutoring procedure as well as observational learning by the tutors. Results indicated that (a) peer tutors reliably implemented the time delay procedure, and (b) the tutor-implemented time delay procedure was effective in teaching written spelling to students identified as learning disabled.     

Role of the Leader in Therapy Groups Conducted With Illicit Drug Abusers: How Directive Does the Leader Have to Be?

A 17-hour marathon group was conducted in a residential treatment center established for inmates in a correctional setting in the southeastern United States. The Hill Interaction Matrix (HIM-G; Hill, 1965) was used to measure the types of leader activity and the types of member activity during portions of each hour of the group activity. It was found that when the group was most therapeutic, there was a relationship between the therapists' actions and behaviors and the types of issues that were discussed in the group. The results that were found do not agree with some of the established drug and alcohol abuse literature.     

Peripheral visual processing

An attempt was made to examine the development of the ability to identify stimuli presented to peripheral vision in several different tasks. Five- and 8-year-old children and college adults saw, for 20 msec, either a single figure at 1°, 2°, 4°, or 6° of visual angle from the fovea (singleform condition) or an off-foveal figure with an additional figure at the fovea (double-form condition). In the double-form conditions, the subjects were required to identify either the peripheral figure only (double-form presentation) or both figures (double-form report). The main effects of Age, Distance, and Form Condition were significant. Accuracy improved with increasing age and with decreasing distance. The Form Condition effect reflected lower accuracy in the two double-form conditions than in the single-form condition. Interestingly, there was no difference between the two double-form conditions, suggesting that the mere presence of a foveal stimulus, with instructions to ignore it, produces as much decrement in peripheral performance as when subjects are told to fully process and report the foveal stimulus. Also, there was no interaction between Form Condition and Distance, suggesting that the label “tunnel vision” may be misleading, since the presence of the foveal stimulus seems to have an equal effect on all peripheral locations and does not really “restrict” the size of the effective visual field.     

Incomplete taste adaptation to different concentrations of salt and sugar solutions

Two concentrations each of sodium chloride and sucrose solutions were used as stimuli in a study examining taste adaptation. Twenty subjects were presented a 3-min continuous flow of each taste stimulus over the anterior dorsal tongue surface, and periodically gave magnitude estimates of its intensity. The degree of adaptation was greater for the less concentrated solutions than for the more concentrated ones, but the majority of subjects did not adapt completely to any of the stimuli. This result, which is consistent with other reports from this laboratory, is discussed in terms of individual differences among subjects and in relation to recent taste research based on completely adapted subjects.     

Perpetuation of gender inequality: A content analysis of comic strips

One vehicle for the perpetuation of gender inequality is mass media. The form of mass media addressed in this article is comic strips. The underlying ideology is that gender inequality is detrimental. The article examines findings from two studies: an over-all comic-strip page study and an indepth study of three comic strips. Results from both analyses reveal that comic strips do perpetuate gender inequality. Findings show that men are represented far out of proportion to their true ratio in the population while women are represented far under their true proportion. It is shown that comic strips are reflective of American society in some ways but also give a distortion of reality — one detrimental to men and women. Guidelines are suggested for the correction of this situation.The author gratefully acknowledges the editorial assistance of Dr. Butler, Dr. Mirande, and Dr. Sagatun on this project.     

Natural experiments and the educational context: The environment and effects of an alternative inner-city public school on adolescents

The 1-year impact of attending a public alternative high school on two cohorts of adolescents who gained entrance to the school through a lottery was studied. Adolescents who had applied to the school but were not selected in the lottery served as a control group. The nature of the alternative high school environment is described, and the outcome of this natural experiment defined in terms of reactions to school, attitude change, and student achievement. In general, the alternative school positively affected student satisfaction with a variety of aspects of school life and induced some positive change in interracial attitudes while not harming student achievement. Race effects were found in the areas of achievement and interracial attitudes. Implications for the study of natural experiments in general and the specific data in particular are drawn.     

The psychological causality implicit in language

We are concerned with the causality implicit in English verbs that name interactions, either mental or behavioral, between two persons, verbs such as like, notice (mental), and help, cheat (behavioral) in such a context as Ted—Paul. Using four different methods, we show that adult native speakers think of causality in such verbs as unequally apportioned between interactants. For behavioral (or action) verbs greater causal weight is given to the Agent argument of the verb (e.g., Ted in Ted helps Paul) than to the Patient argument (Paul). For mental (or state) verbs greater causal weight is given to the Stimulus argument of the verb (e.g., Paul in Ted likes Paul) than to the Experiencer argument (Ted). For English verbs of the type studied, derivational adjectives often exist (e.g., helpful, cheating, likable, noticeable). Such adjectives are attributive to one or the other argument of the verb base (Agent or Patient; Stimulus or Experiencer). We show that the direction of causal attribution in the adjective (e.g., helpful is attributive to Ted the Agent; likable is attributive to Paul the Stimulus) predicts the primary causal weightings assigned in our experimental tasks. We also show that in the English language adjectives derived from action verbs are almost attributive to the Agent and adjectives derived from state verbs to the Stimulus. Because certain facts about English morphology predict certain ways of thinking about causality, our main finding may seem to be a Whorfian one, a demonstration that language affects thought. However, we argue that it is not that but rather a demonstration that two modes of thought (the Agent-Patient Schema and the Stimulus-Experiencer Schema) affect language use. We suggest that the schemas are universals of human thought.