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891.
William H. Van Hoose Catherine M. Vafakas 《Journal of counseling and development : JCD》1968,46(6):536-539
This study investigated some aspects of elementary school guidance and counseling in the 50 states and the 4 American territories. Specifically, such matters as the number of counselors employed, their professional background, certification, and state standards were examined. Results of this study were as follows: 3,837 counselors are now working in elementary schools in 48 states; the majority of these counselors are former elementary school teachers. Over 70 per cent are supported in part by federal funds. To date, 14 states have developed certification requirements for elementary counselors that are discernibly different from secondary certification. For the most part, state standards for elementary school guidance lack specificity; in some cases such standards are non-existent 相似文献
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Ron Van Houten Ahmos Rolider Paul A. Nau Robert Friedman Moshe Becker Ismar Chalodovsky Moshe Scherer 《Journal of applied behavior analysis》1985,18(1):87-93
We assessed the effects of posted feedback and warning ticket programs on speeding and accidents in two cities. In Experiment 1, speeding feedback signs were effective even when 10 were used in Dartmouth, Nova Scotia, and reductions in speeding were associated with reductions in accidents. The effectiveness of the signs was correlated with the number of intersections and residences within 0.5 km beyond them, and the signs had no effect on untreated streets. In Experiment 2, posted feedback and a warning program reduced speeding and accidents on 14 streets in Haifa, Israel. 相似文献
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In the experiments described in this article we investigated the control of stiffness of the effector system in relation to parameters of the movement. If the velocity of a movement is chosen, it appears that at the same time the stiffness of the effector system is set to a preferred value. By changing the instruction given to the subject it is possible to change the relationship between velocity and stiffness without changing the kinematic parameters of the movement.Finally, the changes of stiffness and velocity in a learning process are studied. In conformity with what might be expected on intuitive grounds, it is found that velocity increases spontaneously during learning while stiffness decreases. The results are discussed in connection with the generation of motor programmes. 相似文献