Effects of elements or compound preexposure on conditioned taste aversion as a function of retention interval

The effects of element or compound preexposure and retention interval were examined in three experiments with the taste-aversion paradigm. In Experiment 1, preexposure to the elements of a compound flavor produced less latent inhibition to the compound than did preexposure to the compound itself when a 1-day preexposure-conditioning interval was used. However, preexposing the elements or the compound resulted in equivalent latent inhibition effects when a 21-day retention interval was used. In Experiment 2, a similar pattern of results was observed when the conditioning-test interval was manipulated. Experiment 3 explored the effect of element or compound preexposure when preexposure and test were carried out in different contexts. Attenuated latent inhibition following preexposure to the elements was found when preexposure and test were carried out in the same context. In contrast, preexposure to the elements resulted in as much latent inhibition as did preexposure to the compound when the context was switched from preexposure to testing. The implications of these findings for a retrieval-oriented view of latent inhibition are discussed.     

Media Related Books

Richard Griffith's The Movie Stars (Doubleday $25.00, $19.95 before Christmas, and $11.95 from the Literary Guild or Mainstroam Book Clubs)

Bernard Rosenberg and Harry Silverstein, The Real Tinsel (Macmillan, $9.95)

Andrew Sarris' Confessions of a Cultist: On The Cinema, 1955-69 (Simon and Schuster, $9.95, also available in paperback edition)

P. Adams Sitney's Film Culture Reader (Praeger, $4.95)

Anthony Schillaci and John M. Culkin's edited collection Films Deliver (Citation Press book 1583, $5.25)

International Film Guide Series     

Reference

TELECOMMUNICATIONS SYSTEMS AND SERVICES DIRECTORY —ISSUE TWO, edited by John Schmittroth Jr. and Martin Connors (Detroit, Mich.: Gale Research, 1984--$170.00 for the first edition, being issued in three parts, paper)

THE BOOK PUBLISHING ANNUAL: HIGHLIGHTS, ANALYSES & TRENDS (New York: R.R. Bowker, 1984---$49.95)

THE COMPUTER AND BUSINESS EQUIPMENT INDUSTRY MARKETING DATA BOOK (Computer and Business Equipment Manufacturers Association, 311 First Street, N.W., Washington, D.C. 20001--price not given, paper)

THE SOCIAL AND ECONOMIC IMPACT OF VIDEOTEX, TELETEXT AND COMPUTERS: AN ANNOTATED BIBLIOGRAPHY, by Roberto Valdez, et al., and THE SOCIAL AND ECONOMIC IMPACT OF TELEPHONES by Elena Pernia, et al. (Honolulu, Hi.: East-West Center, 1984--price not given, but cost covers reproduction and postage, paper)

WHAT'S IN PRINT: THE SUBJECT GUIDE TO MICROCOMPUTER MAGAZINES, by W.H. Wallace (Blue Ridge Summit, Pennsylvania: TAB Books, 1984--price not given, paper)

DICTIONARY OF NEW INFORMATION TECHNOLOGY ACRONYMS, by M. Gordon, et al. (London: Kogan Page/Detroit: Gale Research, 1984--$56.00)

THE VIDEOTEX MARKETPLACE (Bethesda, Md.: Phillips Publishing, 1984--$97.00, paper)

A VIDEOTEX/TELETEXT BIBLIOGRAPHY (Videotex Industry Association, 1901 Ft. Myer Drive, Suite 200, Rosslyn, VA 22209--$25.00, paper)

AUDIO VIDEO MARKET PLACE: A MULTIMEDIA GUIDE 1984 (New York: R.R. Bowker, 1984--$45.00 paper)

THE INTERACTIVE CABLE TV HANDBOOK (Bethesda, Md.: Phillips Publishing, 1984--$97.00, paper)

COMPUTERIZED LITERATURE SEARCHING: RESEARCH STRATEGIES AND DATABASES, by Charles L. Gilreath (Boulder, Colo.: Westview, 1984--$25.00)     

Landing techniques in volleyball

Abstract

Knee injuries such as anterior cruciate ligament lesions and patellar tendonitis are very frequent in volleyball, and are often attributed to micro traumas that occur during the landing phase of airborne actions. The aim of the present study was to compare different jumping activities during official men's and women's volleyball games. Twelve top-level matches from the Italian men's and women's professional leagues were analysed. The jumps performed during the games were classified according to the landing technique used by the player (left or right foot or both feet together), court position, and ball trajectory. Chi-square analyses were performed to detect differences in landing techniques between the sexes, court positions, and trajectories when serving, attacking, blocking, and setting. Significant differences (P < 0.05) were found between the sexes for block, set, and spike but not for the jump serve. The frequency of landings on one foot was related to court position and the trajectory of the sets: when spiking faster sets, the players were more likely to use a one-footed landing. The present results should help coaches and physiotherapists to devise appropriate training and prevention programmes, and reveal the need for further detailed biomechanical investigations of the relationships between landings and knee injuries.     

On the Wrong Side of the Tracks: Understanding the Effects of School Structure and Social Capital in the Educational Pursuits of Undocumented Immigrant Students

Over the last few years, increasing scholarly and media attention has been paid to the plight of undocumented immigrant college students. However, only a small fraction of undocumented youth actually moves on from high school to postsecondary opportunities. Indeed, the exclusion from financial aid eligibility and low family socioeconomic status severely limit undocumented students’ ability to matriculate to institutions of higher learning. But little is known about the ways in which school experiences shape postsecondary outcomes. This article focuses on the high school experiences of a sample of undocumented young adults and examines the ways in which school structures shape access to resources needed for postsecondary matriculation. In doing so, I argue that school-based networks are critical for success. However, these networks are fundamentally shaped by the school structure. This article draws from 78 in-depth life histories of undocumented Latino young adults in the Los Angeles metropolitan area. I incorporate a sample, stratified by educational experiences. The lived experiences of these young adults shed important light on the broader world in which they live and the ways in which immigration policies interact with school practices to shape success and failure.     

The Short-Term Effects of a Computer-Based Pregnancy,STD, and HIV Prevention Program

A computer- and Internet-based intervention was designed to influence several variables related to the prevention of pregnancy, STDs, and HIV in rural adolescents. Three-hundred and thirty-eight tenth-graders enrolled in two rural public high schools participated in this field experiment. Results indicate that students in the experimental school had greater knowledge, greater condom negotiation efficacy, greater situational efficacy, and more favorable attitudes toward waiting to have sex than students in the control school. In tandem, the results suggest that computer-based programs may be a cost-effective and easily replicable means of providing teens with basic information and skills necessary to prevent pregnancy, STDs, and HIV.     

Prevalence and Predictors of Cyberbullying Perpetration by High School Seniors

Cyberbullying is the deliberate and repeated misuse of communication technology by an individual or group to threaten or harm others. Guided largely by the communication skills deficiency model and previous research on cyberbullying, this study examins the effects of several predictor variables (i.e., verbal aggression, sex, risky behaviors, parental monitoring, parental limits, technology use, and scope of Internet activities) on cyberbullying perpetration. A total of 1,606 incoming freshmen at a large southwestern university completed an online survey measuring all predictor and dependent variables under investigation. Overall, 35% of these individuals reported that they had cyberbullied at least one person during their senior year of high school. Results indicated that verbal aggression, risky behaviors, and cyberbullying victimization emerged as significant predictors of cyberbullying perpetration. These results have important theoretical and practical implications for those interested in developing cyberbullying prevention interventions.     

Physiological and anthropometric characteristics of top-level youth cross-country cyclists

In the literature there is a lack of data about the development of top level athletes in cross-country mountain biking (XCO). The purpose of this study was to analyze anthropometric and physiological characteristics of some of the best XCO bikers aged between 13 and 16. The study involved 45 bikers (26 males and 19 females) belonging to a youth national team. The evaluations, consisting of anthropometric measures, incremental cycling tests (VO_2max, PPO, P@RCP), and 30 s Wingate Tests (PMax, PMean), were conducted over a lapse of 4 years. Our findings showed in bikers, already at young age, a specific athletic profile advantageous for XCO performance. At the age of 16, just before entering the junior category and competing at international level, male and female bikers showed physiological values normalized to the body mass comparable to those reported in literature for high level athletes (VO_2max>70 and >60 ml/kg/min, PPO >6.5 and >5.5 W/kg, respectively in males and females). The production of high power-to-weight ratios and high peaks of anaerobic power attests the presence of highly developed aerobic and anaerobic systems in young XCO cyclists reflecting the high physiological demand of this sport.     

Growth,functional capacities and motivation for achievement and competitiveness in youth basketball: an interdisciplinary approach

The interaction of multiple influences on the path to sport success is not yet fully understood by sport scientists. In this study, we examined variation in body size, functional capacities and motivation for achievement, competitiveness and deliberate practice of youth basketball players associated with differences in biological maturity status, chronological age and years of training experience. Reflecting the importance of interactive effects, we examined the relationships between the psychological variables and functional capacities. Fifty-eight male basketball players aged 9.5 to 15.5 years were considered. Variables included chronological age, estimated age at peak height velocity, stature, body mass and sitting height by anthropometry; the Work and Family Orientation and Deliberate Practice Motivation Questionnaires were also used. Finally, the Line Drill test and Yo-Yo Intermittent Recovery level 1 (Yo-Yo IR1) tests were used as functional capacities indicators for basketball. Variance components models derived from series of multilevel linear regression models revealed a substantial variation by maturity status for body size, functional capacities indicators, mastery and will to excel. The influence of estimated maturity status on mastery and will to excel was independent of age and years of experience. In contrast, no relationships were observed between psychological variables and functional capacities indicators. We conclude that growth-related changes are relevant to understanding players´ motivations for achievement, competitiveness and deliberate practice. This should be of interest to those involved in the selection and development of youth basketball players.