Studies have shown that cognitive styles have some impacts on user performance in various types of systems. The current study focused on the effects of cognitive styles on users’ information-seeking task performance between an information visualization system and a generic information system. Thirty-two graduate students participated in a controlled laboratory experiment. Each of them completed...

Some have argued that belief in God is intuitive, a natural (by-)product of the human mind given its cognitive structure and social context. If this is true, the extent to which one believes in God may be influenced by one’s more general tendency to rely on intuition versus reflection. Three studies support this hypothesis, linking intuitive cognitive style to belief in God. Study 1 showed that...

The role of cognitive vulnerability in the development of depressive symptoms in youth might depend on age and gender. The current study examined cognitive vulnerability models in relationship to depressive symptoms from a developmental perspective. For that purpose, 805 youth (aged 10-18, 59.9% female) completed self-report measures. Stress-reactive rumination was strongly related to depressiv...

The present study examines how different types of attention cueing and cognitive style affect learners’ comprehension of a cardiovascular system and cognitive load. In this study, the learners were randomly assigned into one of following groups: no-cueing, static-blood cueing, static-blood–static-arrow cueing, and dynamic-blood–dynamic-arrow cueing. The results showed that attention cueing yiel...

Some have argued that belief in God is intuitive, a natural (by-)product of the human mind given its cognitive structure and social context. If this is true, the extent to which one believes in God may be influenced by one's more general tendency to rely on intuition versus reflection. Three studies support this hypothesis, linking intuitive cognitive style to belief in God. Study 1 showed that...

User cooperation for spectrum sensing in cognitive radios has been proposed in order to improve the overall performance by mitigating multi-path fading and shadowing experienced by the users. However, user cooperation results in high energy consumption, extra time for results exchange, as well as delay and security risks. In this paper, we investigate the effects of cooperative spectrum sensing...

This paper presents optimization issues of energy detection (ED) thresholds in cooperative spectrum sensing (CSS) with regard to general Gaussian noise. Enhanced ED thresholds are proposed to overcome sensitivity of multiple noise uncertainty. Two-steps decision pattern and convex samples thresholds have been put forward under Gaussian noise uncertainty. Through deriving the probability of dete...

Human one-to-one tutoring has been shown to be a very effective form of instruction. Three contrasting hypotheses, a tutor-centered one, a student-centered one, and an interactive one could all potentially explain the effectiveness of tutoring. To test these hypotheses, analyses focused not only on the effectiveness of the tutors’ moves, but also on the effectiveness of the students’ constructi...

This paper is concerned with cooperative spectrum sensing (CSS) mechanisms in three-hop cognitive wireless relay networks (CWRNs). The data transmission from a source to a destination is realised with the aid of two layers of cognitive radio (CR) users which are in the transmission coverage of two primary users. In this paper, we first propose a new CSS scheme for a layer of CR users to improve...

Due to the fact that security and energy efficiency are investigated separately in the conventional Primary User Emulation Attack (PUEA) countermeasure strategy in Cooperative Spectrum Sensing (CSS) process, the tradeoff between security and energy efficiency is discussed in this paper. CSS can improve detection performance whereas energy consumption will dramatically boost up with the increasi...