Using A Split-ballot Survey to Explore the Robustness of the 'MIP' Question in Agenda-Setting Research: A Methodological Study     

Min  Young; Ghanem  Salma I.; Evatt  Dixie 《Int. Journal of Public Opinion Research》2007,19(2):221-236

Three aspects of the ‘most important problem’ questionused in agenda-setting research to measure issue salience amongthe public were examined. A split-ballot design in a state-widesurvey compared versions of the public agenda with a socialframe of reference versus a personal frame of reference, versionsusing the traditional term ‘problem’ versus ‘issue’,and the effects of question order. High correlations betweenthe different versions were found in all three sets of comparisons.  相似文献   

Qualitative and quantitative analysis of goat ovaries,follicles and oocytes in view of in vitro production of embryos     

Islam MR  Khandoker MA  Afroz S  Rahman MG  Khan RI 《Journal of Zhejiang University. Science. B》2007,8(7):465-469

Goat ovaries were collected from the slaughterhouse and categorized as right, left, corpus luteum （CL）-present and -absent group and evaluated on the basis of weight （g）, length （cm）, width （cm）, number of follicles, follicles aspirated and number and state ofcumulus-oocyte-complexes （COCs）. Comparatively higher weight [（0.66±0.02） vs （0.64±0.02） g], length [（1.17±0.02） vs （1.1 ±0.02） cm] and width [（0.77±0.02） vs （0.74±0.02） cm] were found in right ovaries than those of left. On the other hand significantly （P〈0.05） higher weight [（0.71±0.03） vs （0.64±0.01） g] and width [（0.76±0.03） vs （0.75±0.01） cm] were found in CL-present group than those of CL-absent group of ovaries. The left ovaries contained comparatively higher number of normal COCs [（1.06±0.09） per ovary] than fight ovaries [（1.03±0.10） per ovary] and the similar trend was found in total number of follicles [（4.51±0.25） vs （4.30±0.23） per ovary] and follicles aspirated [（2.55±0.14） vs （2.52±0.12） per ovary]. But the total COCs per ovary was almost similar in both ovaries [right and left： （1.85±0.12） and （1.85±0.11） per ovary, respectively]. Higher number of total COCs [（1.87±0.09） vs （1.76±0.16） per ovary], total number of follicles [（4.45±0.19） vs （4.16±0.37） per ovary], follicles aspirated [（2.55±0.10） vs （2.48±0.21） per ovary] and normal COCs [（1.12±0.07） vs （0.76±0.14） per ovary] were found in CL-absent group than those of CL-present group of ovaries.  相似文献   

Phenomenal permanence and the development of predictive tracking in infancy     

Bertenthal BI  Longo MR  Kenny S 《Child development》2007,78(1):350-363

The perceived spatiotemporal continuity of objects depends on the way they appear and disappear as they move in the spatial layout. This study investigated whether infants' predictive tracking of a briefly occluded object is sensitive to the manner by which the object disappears and reappears. Five-, 7-, and 9-month-old infants were shown a ball rolling across a visual scene and briefly disappearing via kinetic occlusion, instantaneous disappearance, implosion, or virtual occlusion. Three different measures converged to show that predictive tracking increased with age and that infants were most likely to anticipate the reappearance of the ball following kinetic occlusion. These results suggest that infants' knowledge of the permanence and nonpermanence of objects is embodied in their predictive tracking.  相似文献   

Ghosts in the Nursery 2.0     

Margarete I. Bolten 《Parenting, science and practice》2019,19(1-2):168-172

SYNOPSIS

Parental working is not unambiguously beneficial for children. On the one hand, working parents can be positive role models for their children, and income can improve children’s lives in many ways. On the other hand, work can impair parent-child interactions, especially when the parents experience high levels of working stress. In my commentary, I conclude that the paper by River, enjoys strong support for the impact of maternal state anxiety (attachment anxiety) and work-interfering-with-family (WIF)-conflict related guilt on parents behaviors. Considering the cognitive-relational stress-theory by Lazarus and Folkman, the balance of personal resources and external demands can explain parental stress, which could be associated with parental behavior. Full-time-working parents, who experience high levels of guilt and report high levels of attachment anxiety, are more prone to show low levels of stress resistance toward crying infants. However, these associations are not studied in families with high risk factors. Furthermore, future studies should include aspects of mental health status in a theoretical model. Taken together, the target article provides a solid foundation for further research. I also propose to transfer the findings into more realistic research setting, which includes high-risk groups (parents with low socioeconomic status, low-income, mental health problems) to study how infant cry can influence parents’ patterns of care and abuse. The commentary tries to enrich the study by including Fraiberg’s “ghosts in the nursery” to further integrating parental mentalizing processes in the model explaining parents’ reactions to infant cry signal in the context of WIF conflicts.  相似文献   

What philosophy brings to performance technology     

M. I. Berger 《Performance Improvement》1989,28(7):30-32

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Validity and reliability of a linear positional transducer across commonly practised resistance training exercises     

Harry F. Dorrell  Joseph M. Moore  Mark F. Smith  Thomas I. Gee 《Journal of sports sciences》2019,37(1):67-73

This study investigated the validity and reliability of the GymAware PowerTool (GPT). Thirteen resistance trained participants completed three visits, consisting of three repetitions of free-weight back squat, bench press, deadlift (80% one repetition maximum), and countermovement jump. Bar displacement, peak and mean velocity, peak and mean force, and jump height were calculated using the GPT, a three-dimensional motion capture system (Motion Analysis Corporation; 150 Hz), and a force plate (Kistler; 1500 Hz). Least products regression were used to compare agreeability between devices. A within-trial one-way ANOVA, typical error (TE; %), and smallest worthwhile change (SWC) were used to assess reliability. Regression analysis resulted in R² values of >0.85 for all variables excluding deadlift mean velocity (R² = 0.54–0.69). Significant differences were observed between visits 3-2 for bench press bar displacement (0.395 ± 0.055 m; 0.383 ± 0.053 m), and deadlift bar displacement (0.557 ± 0.034 m; 0.568 ± 0.034 m). No other significant differences were found. Low to moderate TE (0.6–8.8%) were found for all variables, with SWC ranging 1.7–7.4%. The data provides evidence that the GPT can be used to measure kinetic and kinematic outputs, however, care should be taken when monitoring deadlift performance.  相似文献   

The problems facing multidisciplinary teams: As perceived by team members     

Steven I. Pfeiffer 《Psychology in the schools》1981,18(3):330-333

The present study investigated the problems that team members perceive to exist on multidisciplinary teams. One hundred forty-seven team members on 40 teams from four urban school districts completed a questionnaire that presented an exhaustive listing of potential team problems. Results indicated that the two most pressing areas of concern for urban, multidisciplinary team members were: too constrictive a set of team roles and goals, and teams functioning under extensive pressure with minimal support. Strategies to reduce problems and enhance team functioning are presented.  相似文献   

A Three-Part System for Storage of Archaeological Collections     

Richard I. Ford 《Curator: The Museum Journal》1980,23(1):55-62

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A guide to McCarthy interpretation     

Jack A. Naglieri  Steven I. Pfeiffer 《Psychology in the schools》1982,19(1):18-23

The aim of the present study was to develop a system of tables to facilitate interpretation of the McCarthy Scales of Children's Abilities. Tables are presented that organize the McCarthy subtests according to Bannatyne's, Sattler's, and Meeker's systems of interpretation. In addition, tables that organize the McCarthy Scales into categories that reflect factors likely to influence various subtests are presented. These tables will provide a more structured approach to McCarthy interpretation and a straightforward empirical method for generating hypotheses regarding individual strengths and weaknesses in intellectual ability.  相似文献   

Special education placement decisions made by teams and individuals: A cross-cultural perspective     

Steven I. Pfeiffer 《Psychology in the schools》1982,19(3):335-340

The present study looked at whether special education placement decisions made by teams are superior to those made by individuals. The investigation was conducted in Puerto Rico to determine whether the benefits of the cooperative group process exist in another culture. Results indicated that teams in Puerto Rico generated significantly less variability (i.e., errors) in their placement decisions than did the same specialists acting independently.  相似文献