Learning to Troubleshoot: Multistrategy Learning of Diagnostic Knowledge for a Real-World Problem-Solving Task

This article presents a computational model of the learning of diagnostic knowledge, based on observations of human operators engaged in real-world troubleshooting tasks. We present a model of problem solving and learning in which the reasoner introspects about its own performance on the problem-solving task, identifies what it needs to learn to improve its performance, formulates learning goals to acquire the required knowledge, and pursues its learning goals using multiple learning strategies. The model is implemented in a computer system which provides a case study based on observations of troubleshooting operators and protocol analysis of the data gathered in the test area of an operational electronics manufacturing plant. The model not only addresses issues in human learning, but, in addition, is computationally justified as a uniform, extensible framework for multistrategy learning.     

The Role of Individual Characteristics in Predicting the Stability of Party Identification: A Cross-Cultural Study

The present study examined political partisanship stability in the context of transitional and consolidated democracies. We hypothesised that (a) in both democratic systems, personality differences as well as socialisation patterns and socioeconomic factors would be related to the stability of party identification directly, and that (b) the relationship between individual factors and party identification patterns would be moderated by democracy type and by socialisation strength. A total of 521 participants (293 American, 228 Romanian) completed surveys assessing partisanship stability, individual dispositions, socialisation strength, and socioeconomic status. In support of hypothesis (a), the stability of party identification was significantly predicted by socialisation, desire for control, and positive economic perceptions. In support of hypothesis (b), type of democracy moderated the relationship between economic perceptions and partisanship stability, and parental socialisation moderated the relationship between desire for control/self‐consciousness and the stability of party identification. La présente étude examine la stabilité de la préférence politique dans un contexte de démocraties en transition ou consolidées. Nous faisons l’hypothèse que (a) dans les deux systèmes démocratiques, les différences de personnalité, comme les modèles de socialisation et les facteurs économiques sont directement liés à la stabilité d’identification à un parti et que (b) la relation entre les facteurs individuels et les modèles d’identification à un parti est affaibli par le type de démocratie et la force de la socialisation. Un total de 521 participants (293 Américains et 228 Roumains) ont répondu à une enquête évaluant la stabilité de la préférence, les dispositions individuelles, la force de la socialisation et le statut socio‐économique. En accord avec l’hypothèse (a), la stabilité d’identification à un parti est significativement prédictible par la socialisation, le désir de contrôle et la perception positive de l’économie. En accord avec l’hypothèse (b), d’une part, le type de démocratie affaiblit la relation entre les perceptions de l’économie et la stabilité de la préférence, d’autre part, la socialisation parentale affaiblit le lien entre le contrôle/la conscience de soi et la stabilité de l’identification à un parti.