EVALUATING THE EFFECTS OF ON‐TASK IN A BOX AS A CLASS‐WIDE INTERVENTION

The present study evaluated the effects of the On‐Task in a Box intervention on student on‐task behavior when used as a class‐wide intervention. The intervention package includes self‐monitoring, video modeling, and reinforcement contingency components. A multiple baseline design across three elementary classrooms was used to determine the effects of the intervention on student behavior. Results indicated immediate increases in on‐task behavior in all classrooms. Calculation of nonoverlap of all pairs’ effect sizes indicated strong intervention and maintenance effects on on‐task behavior of students in all classrooms. Social validity data were also collected, which indicated adequate validity of the intervention. Results of the study suggest that the intervention package may be effective for improving class‐wide levels of on‐task behavior.     

An analysis of the relationship between the linear hammer speed and the thrower applied forces during the hammer throw for male and female throwers

The purpose of this study was to investigate the relationship between the cable force and linear hammer speed in the hammer throw and to identify how the magnitude and direction of the cable force affects the fluctuations in linear hammer speed. Five male (height: 1.88 +/- 0.06 m; body mass: 106.23 +/- 4.83 kg) and five female (height: 1.69 +/- 0.05 m; body mass: 101.60 +/- 20.92 kg) throwers participated and were required to perform 10 throws each. The hammer's linear velocity and the cable force and its tangential component were calculated via hammer head positional data. As expected, a strong correlation was observed between decreases in the linear hammer speed and decreases in the cable force (normalised for hammer weight). A strong correlation was also found to exist between the angle by which the cable force lags the radius of rotation at its maximum (when tangential force is at its most negative) and the size of the decreases in hammer speed. These findings indicate that the most effective way to minimise the effect of the negative tangential force is to reduce the size of the lag angle.     

Young children's ideas about the nature, causes, justification, and alleviation of poverty

Sixty-four 8-year-old boys and girls from urban and rural settings and representing different races and socioeconomic status backgrounds responded to questions about the nature, causes, justification, and alleviation of poverty. Much of what the children said indicated that they had not yet internalized prevailing adult norms and values about the poor in our society. A substantial proportion spoke in ways suggesting forces apart from the individual as causing poverty. Nearly all believed that poverty was not fair. Justifications offered by the children included disavowing economic inequality, or speaking in terms of basic needs or what should or ought to be. A majority mentioned philanthropy or societal change as a way to end poverty. Findings also lend support to the claim of social representations theory that concepts vary as a function of social factors. Future research should employ a design that acknowledges interacting variables to investigate systems of meaning in children's understandings about poverty.     

Kinematic and electromyographic comparisons between chin-ups and lat-pull down exercises

The purpose of this study was to compare kinematics and muscle activity between chin-ups and lat-pull down exercises and between muscle groups during the two exercises. Normalized electromyography (EMG) of biceps brachii (BB), triceps brachii (TB), pectoralis major (PM), latissimus dorsi (LD), rectus abdominus (RA), and erector spinae (ES) and kinematics of back, shoulder, and seventh cervical vertebrae (C7) was analysed during chin-ups and lat-pull down exercises. Normalized EMG of BB and ES and kinematics of shoulder and C7 for chin-ups were greater than lat-pull down exercises during the concentric phase (p < 0.05). For the eccentric phase, RA during lat-pull down exercises was greater than chin-ups and the kinematics of C7 during chin-ups was greater than lat-pull down exercises (p < 0.05). For chin-ups, BB, LD, and ES were greater than PM during the concentric phase, whereas BB and LD were greater than TB, and LD was greater than RA during the eccentric phase (p < 0.05). For lat-pull down exercise, BB and LD were greater than PM, TB, and ES during the concentric phase, whereas LD was greater than PM, TB, and BB during the eccentric phase (p < 0.05). Subsequently, chin-ups appears to be a more functional exercise.     

Using Informational and Narrative Picture Walks to Promote Student-Generated Questions

The purpose of this article is to explore the use of picture walks in narrative and informational text as a method to encourage question generation. This article overviews the instructional benefits of having students generate their own questions before, during, and after reading. Featured are two classrooms where students pose questions through narrative and informational text features.     

Family counseling in the Netherlands for Turkish-origin parents of deaf children with a cochlear implant

Cultural elements such as language, beliefs about health, and family context play important roles in the uptake of rehabilitation and treatment of deafness. Because of cultural issues, minority groups often do not receive optimal care. Focusing on the Netherlands, the researchers explored how the rehabilitation and counseling of deaf children of Turkish-origin parents can be improved. The most important findings were that (a) most parents initially did not believe their child was deaf and regretted later that they did not start hearing rehabilitation earlier; (b) parents had little confidence in the Dutch health care system and sought a second opinion from a medical doctor of their own national origin; (c) parents did not know how to be actively involved in the care of their deaf child. Implications for practice aimed at improving rehabilitation and counseling for these children are described.     

Evaluation Dimensions for Full-Time Head Coaches at NCAA Division II Institutions

Respondents (n=34) participated in three rounds of a Delphi study to determine dimensions that should be included in the evaluation of full-time head coaches at NCAA Division II institutions. Delphi panel members included athletic directors, intercollegiate head coaches, and student-athletes at randomly selected NCAA Division II institutions. In total, 175 (92.6 per cent) of the initial 189 unique behaviors reached consensus for inclusion. Only two behaviors (1.1 per cent) reached consensus for exclusion. Twelve behaviors (6.3 per cent) failed to reach consensus. Differences between respondent groups were found in only seven (3.7 per cent) of the 189 behaviors. Only small absolute differences in mean importance ratings of the twenty categories were found. To develop a more practical evaluation tool, the results obtained were refined, lowering the number of categories to fifteen and the number of behaviors to ninety-one. The refined evaluation tool contains the most important dimensions for evaluating head coaches. It represents the essentials of a coaching evaluation.     

Kinematics of the field hockey penalty corner push-in

The aims of the study were to determine those variables that significantly affect push-in execution and thereby formulate coaching recommendations specific to the push-in. Two 50 Hz video cameras recorded transverse and longitudinal views of push-in trials performed by eight experienced and nine inexperienced male push-in performers. Video footage was digitized for data analysis of ball speed, stance width, drag distance, drag time, drag speed, centre of massy displacement and segment and stick displacements and velocities. Experienced push-in performers demonstrated a significantly greater (p < 0.05) stance width, a significantly greater distance between the ball and the front foot at the start of the push-in and a significantly faster ball speed than inexperienced performers. In addition, the experienced performers showed a significant positive correlation between ball speed and playing experience and tended to adopt a combination of simultaneous and sequential segment rotation to achieve accuracy and fast ball speed. The study yielded the following coaching recommendations for enhanced push-in performance: maximize drag distance by maximizing front foot-ball distance at the start of the push-in; use a combination of simultaneous and sequential segment rotations to optimise both accuracy and ball speed and maximize drag speed.