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81.
82.
The reinforcing aspects of sucking behavior in 36 human newborns was examined in a limited instrumental conditioning paradigm where sucking was both operant and reinforcer. During training, response density (rate based on sucking opportunity time) and latency were measures of two components of nonnutritive sucking, contingent negative pressure suction, and incidental jaw movement. The strategy for determining the reinforcing aspects of sucking involved comparisons of three types of sucking stimuli as reinforcers. The nature of modified operant sucking was investigated during extinction by examining number of sucks per burst, number of bursts emitted, and interburst interval time. The feedback from sucking which acted as reinforcement was concluded to be response density. Sucking was modified by changes in pausing behavior, including response latency and pauses between bursts of sucks. The number of sucks per burst also showed a significant change under certain conditioning arrangements. 相似文献
83.
Bradley Bucher 《Journal of experimental child psychology》1973,15(1):10-21
Children were given instructions to perform different tasks. Compliance was studied as a function of several variables: the prevailing pattern of reinforcement for different instructions, the availability of a competing reinforced activity, and the similarity among tasks. Rate of compliance tended to decrease when the probability of reinforcement for compliance decreased, or when a competing reinforced activity was available. Differential reinforcement over the tasks did not always produce discriminative responding even under favorable conditions. Novel instructions obtained compliance at the same rate as that for frequently repeated instructions, independent of the novel instruction's past or present reinforcement history. Greater discrimination in responding was found when tasks were less similar. Results imply that sets of instructions may form a response class, with characteristics similar to those found in studies of generalized imitation. 相似文献
84.
Christopher Taylor 《Learning and motivation》1973,4(1):102-107
Two experiments are reported in which rats received either no prefeeding, nutritive substance prefeeding, or nonnutritive substance prefeeding prior to running in a straight alley. The running-speed data supported body weight as an overall measure of hunger drive. Performance was a function of body weight but not stomach weight or associated stomach bulk. 相似文献
85.
William C House 《Journal of research in personality》1973,7(3):277-287
An experiment was conducted to investigate the effects of time perspective on performance expectancies and the subjective evaluation of outcomes in regard to a task at which subjects had previously succeeded or failed. Prior research has produced conflicting findings on the subjective evaluation of positive and negative outcomes, but some of the research has dealt with tangible rewards and punishments while other work has been concerned with performance outcomes involving tasks with which subjects were unfamiliar. In the current study subjects first succeeded or failed on either an easy or difficult task. They then stated performance expectancies and made evaluations of the affect associated with success and failure in regard to performing the task again immediately, in 3 wk, or in 21 wk. Results indicated a significant decrease over time for both the satisfaction associated with passing and the dissatisfaction associated with failure. Performance expectancies were significantly higher for the testing period of 21 wk in the future than for either the immediate or 3-wk testing period, but this difference was evidenced only for subjects who initially passed the test. 相似文献
86.
Ross Norman 《Journal of experimental social psychology》1976,12(3):294-300
Ninety-eight female subjects were presented with a statement made by an attractive or an expert source suggesting that people should sleep less than the usual eight hours. For approximately half of the subjects the source gave a simple statement of opinion, for the other half six separate supporting arguments were also presented. As predicted the manipulation of number of arguments provided had more influence on the effectiveness of the expert than the attractive source. Results were interpreted as supporting the hypothesis that quite different dynamics underly the persuasive power of attractive and expert individuals. 相似文献
87.
A. Desmond Poole R. W. Sanson-Fisher G. Allen German J. Harker 《Behaviour research and therapy》1980,18(6):581-586
The effects of rapid smoking on the blood pressure, pulse rate and cardiac functioning of 58 smokers (30 women and 28 men) are reported. All subjects were healthy volunteers, 45 were under 40 yr of age, the remaining 13 between 40 and 50 yr. They received between 6 and 12 rapid smoking sessions. It was found that, in both the under and over 40 age groups, blood pressure levels and pulse rates increased significantly following rapid smoking sessions. There were, however, significant decreases between sessions and no evidence of a cumulative effect of successive rapid smoking sessions. Some qualitative changes in cardiac functioning were observed, namely the appearance of T wave flattening and S-T depression. None of the changes were considered to be of sufficient magnitude to necessitate exclusion from the programme, but confirm the need to monitor closely the physiological functioning of persons undergoing rapid smoking. 相似文献
88.
Richard L Henshel 《Journal of experimental social psychology》1980,16(5):466-478
Critics of the laboratory experiment have maintained that artificiality (the intrusion into the experiment of “unrealistic” conditions) vitiates any possibility of generalizability beyond the confines of the laboratory. It is argued here that such artificiality in laboratory experimentation is a defect or flaw only within the context of verification and may be a distinct virtue in the context of discovery. Indeed it is argued that social psychological experiments may not be artificial enough when contrasted with the most fruitful experiments in the natural sciences. One purpose of an experiment may be to maximize artificiality deliberately so as to discover regularities that do not presently obtain under the “real” conditions outside the laboratory but which are capable of existing. When such observed laboratory regularities produce potentially beneficial outcomes, an attempt may be made to create the specific artificial laboratory conditions outside the laboratory to benefit mankind. This logic, exceedingly common in the natural sciences, has been virtually ignored in social psychology, even in the laboratory experiment, in favor of “realistic” reproduction of existing or reasonably plausible situations. Theoretical benefits of this additional modality of experimentation are illustrated by two recent developments in psychology. 相似文献
89.
Richard M Sorrentino Gillian King Gloria Leo 《Journal of experimental social psychology》1980,16(3):293-301
This research note raises some concerns about possible alternative explanations to studies using perceptual change as indicative of minority vs majority influence. Having failed to replicate the original study (S. Moscovici & B. Personnaz, Journal of Experimental Social Psychology 1980, 16, 270–282), using the same and an alternate measuring procedure, inspection of additional data introduces the role of suspiciousness in explaining this and previous findings. An informal study adds further credence to this explanation. 相似文献
90.
Seven language tests were constructed or adapted to assess the performance of three groups of 10 right-handed adult subjects: a right hemisphere lesion (RHL) group, a left hemisphere lesion (LHL) group, and a neurologically normal (NN) control group. Both the LHL and RHL groups produced poorer scores than the NN group on six of the seven tests. On two of the six significant tests, the RHL performed more poorly than the NN group. Analyses of words uttered during an oral story telling test indicated that the RHL group told significantly fewer complete stories using significantly more nouns, adjectives, and conjunctions than the NN group. On a 7-point scale, three judges rated the overall communication abilities of the RHL group as having “mild problems,” a significantly different rating than the ratings of the LHL and NN groups. The findings suggest that underlying visual spatial and perceptual deficits may be accompanied by clearly recognizable language differences in certain subjects. 相似文献