Collective dimensions of reliability: Some lines of research

Abstract

System reliability depends on the quality of the coupling between the human and technical components of the system, hence the term “sociotechnical reliability”. The present article is more particularly devoted to the collective dimensions of sociotechnical reliability, and especially the role played by collective activity. Essentially, the aim is to propose a general model of analysis of some of the major features of this role. This model makes explicit the notion of coupling and the regulation loops which accompany the implementation of the activity. The role played by task characteristics (type of task, allocation of tasks within the group, means of co-ordination), group characteristics (composition, collective bias), and coupling characteristics (task versus group structure, contingency model, computer-assisted groups) are examined in turn. Finally, the characteristics of the collective activity itself are discussed: relations to prescribed task, common collective field of reference, communications, self-management of reliability, etc. The model allows collection and organization of knowledge on the themes discussed and, at the same time, supplies a grid for a first analysis of collective activity for the study of reliability.     

Perceptual adjustment to time-compressed speech: A cross-linguistic study

Previous research has shown that, when hearers listen to artificially speeded speech, their performance improves over the course of 10–15 sentences, as if their perceptual system was “adapting” to these fast rates of speech. In this paper, we further investigate the mechanisms that are responsible for such effects. In Experiment 1, we report that, for bilingual speakers of Catalan and Spanish, exposure to compressed sentences in either language improves performance on sentences in the other language. Experiment 2 reports that Catalan/Spanish transfer of performance occurs even in monolingual speakers of Spanish who do not understand Catalan. In Experiment 3, we study another pair of languages— namely, English and French—and report no transfer of adaptation between these two languages for English—French bilinguals. Experiment 4, with monolingual English speakers, assesses transfer of adaptation from French, Dutch, and English toward English. Here we find that there is no adaptation from French and intermediate adaptation from Dutch. We discuss the locus of the adaptation to compressed speech and relate our findings to other cross-linguistic studies in speech perception.     

A Longitudinal Study of Vocational Maturity and Ethnic Identity Development

This study examines longitudinally the development of vocational maturity and ethnic identity in a majority and a minority group of 641 students in the Province of Québec, Canada. Ethnic identity and four components of vocational maturity were assessed in four cohorts at three times of measurement. Results show clearly different developmental trends in both ethnic identity and in vocational maturity for majority and minority groups: The minority group showed a linear increase in ethnic identity over time, while the majority group showed a decrease starting with the second time of measurement; vocational maturity components showed a more complex pattern of changes but demonstrated that minority participants matured significantly earlier than those from the majority group. There was a positive relationship between ethnic identity and vocational maturity for both groups.     

Verbal interference with perceptual classification: The effect of semantic structure

In a task of the same form as the standard Stroop test, the relevant attribute was ellipse size and the required responses were the numbers 1 through 6 assigned to each of the ellipses in order of increasing size. The irrelevant attribute consisted of either alphabet letters or the numerical symbols 1 through 6 displayed in the center of each ellipse. The numerals produced more interference with the classification of the relevant attribute than the alphabet letters, supporting Klein’s (1964) results. In addition, the interference due to the irrelevant numerical symbols increased as the distance between the values of the relevant and irrelevant attributes was decreased. Since “distance” is a structural property of the number system, this indicated that the competing response tendencies aroused by the irrelevant numericals involved the semantic structure for numbers. The same results were obtained when numerical quantity, rather than ellipse size, was the relevant attribute.     

Logical and memory processes in a unidimensional concept identification task by children and adults

Behavior of 12-year-old children and of adults was studied in a unidimensional concept identification task. Data have been analyzed within the framework of a hypothesis testing model involving a testing process and a memory process. The data show that testing strategy, as it is described in the model, is very close in children and adults. In children, however, who exhibit lesser retention of information preceding the last trial, the memory process suffers from more limitations than in adults.     

The interaction of veracity and syntax in the processing of sentences1

The reaction times of 80 Ss in judging sentences true or false with respect to pictures were analyzed, and it was noted (a) that true sentences containing an expected surface structure required less time than false sentences of the same structure, (b) that latencies to true sentences containing an unexpected surface structure were longer than latencies to the same sentences when their structure was identical to that of previous sentences, and (c) that transitive-verb constructions appeared easier to judge than predicate nominatives of the same length.