Referenzsemantik in der Partnermodellierung

How can we explain that an assertion on something perceived can be understood in the same manner by somebody who cannot perceive that scene? This problem bases the interest in computational linguistics in how listener modeling could possibly be harmonized with reference semantics. Mental images substituting real perception appear as a way out. The architecture of the listener model has to be adapted to the creation and use of such pictorial data structures. Furthermore, the relation between the latter and a verbal (i. e., propositional) representation must be understood. The resulting architecture of a listener model with reference semantics can be employed to solve communicational problems from three general classes in a better way, as is demonstrated by an example implementation.     

Family planning of Portuguese immigrants and integration in Belgium

A substantial immigration of Portuguese and other foreign nationals to Belgium due to a favorable immigration policy guides this investigation to focus on this group in order to study the influence of the acculturation experience on birth-control practices. Choosing a sample of 100 married women within a group of 998 Portuguese immigrants in an urban municipality in Brussels, the study sets out specifically to investigate whether these immigrants adopt attitude patterns of the receiving social group or if they preserve the customs of their original community. The hypothesis held by the study was that the better the woman's integration into Belgian society, the larger her knowledge and acceptance of contraceptives would be. The study found that the majority of interviewed immigrants remained poorly integrated into the Belgian society, and that the transition from a traditional to an industrial society had not included great changes in attitudinal behavior which would facilitate social and cultural integration into the new society. In terms of attitudes toward contraception, negative behavior was observed to be linked not to levels of acculturation, but rather to lack of information. Though the majority of respondents expressed desires for controlled fecundity even when still in Portugal, those who came to Belgium with no previous knowledge or desires admitted to having felt the need for contraceptive practice. The crucial factor in acceptance of modern contraceptive practices is singled out as one of communication. Access to information about contraception is readily available in the Belgian society. The information actually obtained by the women, however, depended on their access to informational channels, the circumstances through which they got in touch with such sources, and their problems with a language barrier when relying on the media through which contraceptive knowledge was made available.     

IDENTIFYING THE EDUCATIVE AND SUPPRESSIVE EFFECTS OF POSITIVE PRACTICE AND RESTITUTIONAL OVERCORRECTION

Two major features of the overcorrection procedure, restitution and positive practice, were analyzed for their educative and suppressive properties in the treatment of profoundly retarded adults. Positive practice techniques that were topographically similar and dissimilar to the target behavior were studied. Eating behavior and puzzle performance were observed. Restitutional overcorrection and both forms of positive practice were effective for suppressing inappropriate behaviors. Even when appropriate behaviors had been acquired by positive practice, restitution and dissimilar positive practice were generally ineffective for increasing their rate of occurrence. However, topographically similar positive practice was successful as a means of teaching new appropriate behaviors.     

Acquiring conjunctive concepts: When and why does feature frequency affect feature identification?

According to frequency theories of concept attainment, acquisition of rule-governed concepts depends on discriminating relevant from irrelevant stimulus features on the basis of their respective frequencies of occurrence. Depending on the theorist, the critical frequency counts may be based on occurrence in all stimuli or on occurrence in positive instances only. Experiment 1 held frequency in positive instances constant and varied the frequency of irrelevant features in the negative category. High frequency was associated with impaired performance, but only when concept problems started with a negative instance. Experiment 2 demonstrated that some previous findings in the literature that were thought to support frequency theory also depended on problems starting with a negative instance. These findings are not easily reconciled with existing frequency theories. We attribute our results to high intercategory similarity, which is a correlate of high frequency of irrelevant features. In the context of a hypothesis-testing theory, we propose that a negative start stimulus proactively interferes with memory for information in the initial positive instance and that the extent of the interference depends on how similar negative instances are to positive instances.     

Effects of differential reinforcement and task difficulty on preschoolers' compliance with teacher instructions

Preschool children in day schools were given instructions to complete certain tasks. Four tasks were given of two types and two levels of difficulty. In each condition compliance with at most one instruction (one task) was reinforced. In two similar experiments, with six children, general results were: compliance with easy tasks was maintained without reinforcement when any task compliance was reinforced; compliance for hard tasks remained high only when that specific task was reinforced. Thus, generalization of compliance with instructions varied with task difficulty. The setting and procedure for both studies were designed to reduce possible coercive features of laboratory studies of generalized performance. Results show generalized performance can occur under naturalistic conditions. The effect of effort, as a response characteristic affecting generalized performance, is discussed.