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1.
A running-wheel movement-detection method is described for use with a modified 1350 Commodore mouse and a Commodore 64, is described. The movement-detection method allows for the detection of partial revolutions and direction of movement, but requires no interface equipment. The modified running wheel is discussed as a new technique that may be useful for bridging empirical and theoretical differences between free-operant and discrete-trial runway procedures. 相似文献
2.
The Psychological Record - The present experiments investigated blocking effects in rhesus monkeys (Macaca mulatta) in a discrimination learning paradigm using a single stimulus modality. Two... 相似文献
3.
Student personnel services for the elementary school utilizing counselor, social worker, and psychologist are discussed with respect to their overlapping and unique skills. As a solution to the manpower shortage, a program for multidisciplinary training of paraprofessionals is suggested. 相似文献
4.
Allen D. Szalda-Petree Andrea M. Karkowski Lisa R. Brooks Nabil F. Haddad 《Behavior research methods》1994,26(1):54-56
A running-wheel-movement-detection system is described for use with an IBM-compatible system and a serial mouse. It is an adaptation of a system developed for use on a Commodore 64. The IBM-compatible system provides obvious advantages in speed, memory, data storage, and programming ease over the earlier Commodore 64 system. 相似文献
5.
In three experiments, rats learned to respond differentially to reinforced and nonreinforced trials when the length of the intertrial interval (ITI) predicted the trial outcome (reinforcement or nonreinforcement). Rats in control groups, for whom the length of the ITI did not predict the outcome, did not show differential performance on nonreinforced and reinforced trials. Generalization gradients obtained following discrimination training were comparable to those obtained following discrimination training with other types of discriminative stimuli. That is, groups which had shown differential performance in discrimination training yielded generalization gradients with fastest speeds at the previously reinforced ITIs, slowest speeds at the previously nonreinforced ITIs, and intermediate speeds at ITIs of intermediate length. Control groups yielded flat gradients across all ITIs tested. These effects were shown for relative time discrimination (short time = reinforcement, long time = nonreinforcement, or the reverse) and also for an absolute time discrimination (long and short time = reinforcement, middle time = nonreinforcement or the reverse). This method was effective for time duration measured in minutes rather than seconds, as is more commonly the case. 相似文献
6.
P. F. Haddad 《Personality and individual differences》1982,3(4):461-463
The personalities of 51 women who wished to avoid obstetric intervention and to adopt alternative delivery positions were assessed. The EPQ was completed by the women and their consorts. The women were slightly higher on tough-mindedness (Psychoticism), more extra-verted and had lower dissimulation (Lie scores), than the average woman. Their Neuroticism scores were within the normal range for their age group. The personality scores for their consorts did not differ from the normal population. 相似文献
7.
This study examines the effects of some aspects of the school normative, academic and institutional context together with individual and interpersonal factors, on educational expectations among Palestinian students in Israel. The data consist of a sub-sample of 1601 students in 40 high schools. Hierarchical linear modelling technique (Multilevel analysis) is used to investigate the effect of the school context and the interpersonal factors on students educational expectations (SEE). The results of this study clearly demonstrate that both sets of variables are highly related to the outcome variable, providing new evidence that SEE, perhaps like other educational outcomes, are
developed through interpersonal and contextual effects. While recent research indicates that the school institutional context mediates the effects of interpersonal factors (Buchmann & Dalton, 2002), this study suggests that among Palestinian students in Israel, interpersonal relations exert significant influences on SEE, regardless of, or despite, the schools institutional context. 相似文献
8.
Haddad JM Claxton LJ Keen R Berthier NE Riccio GE Hamill J Van Emmerik RE 《Journal of experimental child psychology》2012,111(2):286-298
Studies have suggested that proper postural control is essential for the development of reaching. However, little research has examined the development of the coordination between posture and manual control throughout childhood. We investigated the coordination between posture and manual control in children (7- and 10-year-olds) and adults during a precision fitting task as task constraints became more difficult. Participants fit a block through an opening as arm kinematics, trunk kinematics, and center of pressure data were collected. During the fitting task, the precision, postural, and visual constraints of the task were manipulated. Young children adopted a strategy where they first move their trunk toward the opening and then stabilize their trunk (freeze degrees of freedom) as the precision manual task is being performed. In contrast, adults and older children make compensatory trunk movements as the task is being performed. The 10-year-olds were similar to adults under the less constrained task conditions, but they resembled the 7-year-olds under the more challenging tasks. The ability to either suppress or allow postural fluctuations based on the constraints of a suprapostural task begins to develop at around 10 years of age. This ability, once developed, allows children to learn specific segmental movements required to complete a task within an environmental context. 相似文献
9.
Haddad JM Rietdyk S Ryu JH Seaman JM Silver TA Kalish JA Hughes CM 《Journal of motor behavior》2011,43(4):345-355
The authors examined postural asymmetries during quiet stance and while holding evenly or unevenly distributed loads. Right-hand dominant subjects preferentially loaded their right lower limb when holding no load or a load evenly distributed in both hands, but no differences in center of pressure (CoP) were observed between the left and right limbs. However, longer CoP displacement was observed under the preferentially loaded limb, which may reflect a functional asymmetry that allows quick movement of one limb in response to a potential perturbation. When a load was held only in the nondominant hand, sample entropy decreased in the left (loaded) limb but increased in the right (unloaded) limb, suggesting the unloaded foot compensated for a loss of control flexibility in the loaded foot. 相似文献
10.