Introduction to The Philosopher as Public Intellectual

This introductory essay offers a general survey of some of the conceptual and normative issues that arise with respect to the philosopher as a public intellectual, arguing that philosophers should be public intellectuals. It also briefly introduces the themes of the essays that follow.     

Evaluation and treatment of covert stereotypy

The treatment of behavior maintained by automatic reinforcement (e.g. stereotypy) can present a unique challenge if practitioners cannot control delivery of the maintaining reinforcer. Further, some individuals might engage in stereotypy only when care providers are absent. In the current evaluation, an adolescent boy's hand flapping was demonstrated to occur in the absence of social contingencies and care providers. To reduce the behavior, two treatment strategies were assessed. In the first approach, verbal reminders to refrain from hand flapping were delivered on time‐based schedules. In the second approach (differential reinforcement of other behavior, DRO), we provided access to a preferred item contingent on prespecified time lengths with no hand flapping when the participant was alone in a room. Results of the investigation indicated that the verbal reminders were unsuccessful, whereas the DRO program resulted in near‐zero levels of stereotypy. Copyright © 2002 John Wiley & Sons, Ltd.     

The role of memory representation in the vigilance decrement

Working memory load is critically important for the overall level of performance on vigilance tasks. However, its role in a key aspect of vigilance—sensitivity decrement over time—is unclear. We used a dual-task procedure in which either a spatial or a nonspatial working memory task was performed simultaneously with a spatial vigilance task for 20 min. Sensitivity in the vigilance task declined over time when the concurrent task involved spatial working memory. In contrast, there was no sensitivity decrement with a nonspatial working memory task. The results provide the first evidence of a specific role for working memory representation in vigilance decrement. The findings are also consistent with a multiple resource theory in which separate resources for memory representation and cognitive control operations are differentially susceptible to depletion over time, depending on the demands of the task at hand.     

Syndrome of inappropriate antidiuretic hormone associated with escitalopram therapy

Escitalopram is the selective serotonin reuptake inhibitor (SSRI) most recently approved for use in the United States. It is structurally related to citalopram, but is felt to have a more tolerable side-effect profile than its parent compound. Side effects are not generally serious and include headache, diarrhea, and nausea. While hyponatremia and the syndrome of inappropriate antidiuretic hormone (SIADH) have been associated with treatment with other SSRIs, there has only been one case of escitalopram-induced SIADH reported in the literature to date. We now report another case of a patient who developed SIADH after being treated with escitalopram for 4 weeks. The patient's hyponatremia improved following the discontinuation of escitalopram. Clinicians should be aware of this uncommon but significant side effect of SSRIs and monitor high-risk patients for the development of SIADH.     

False recall and false recognition induced by presentation of associated words: Effects of retention interval and level of processing

The effects of retention interval and level of processing on false recall and false recognition of associates were examined. False recall and false recognition were induced by presenting subjects with words closely associated with a non-studied word. Both level of processing and retention interval affected false recall (Experiment 1) and false recognition (Experiment 2) in the same direction with which they affected accurate recall and accurate recognition. That is, semantically processed lists exhibited higher levels of later false recall and false recognition than did superficially processed lists. Furthermore, a decline in false recall and false recognition occurred across retention intervals of 0, 2, and 7 days. However, the decline in false recall and false recognition was less pronounced than the decline in accurate recall and accurate recognition. Results are consistent with source monitoring and fuzzy trace explanations of false recall and false recognition.     

Neural correlates of age-related reduction in visual motion priming

Previously we reported that priming of visual motion perception is reduced in older adults compared to younger adults (Jiang, Greenwood, & Parasuraman, 1999, Psychology and Aging, 14(4), 619; Jiang, Luo, & Parasuraman, 2002b, Neuropsychology, 16(2), 140). To examine the neural mechanisms underlying this age-related effect, event-related brain potentials (ERPs) were recorded during perceptual judgments of motion directions by younger and older adults in two experiments. When judging single-step motion, both younger and older adults evoked significantly larger ERP late positive component (LPC) responses to unambiguous motion compared to LPC responses elicited by ambiguous motion. In contrast, compared to the younger adults, the older adults evoked comparable but delayed ERP responses to single motion steps. In the second experiment the younger and older groups judged the directions of two successive motion-steps (either motion priming or motion reversals). Under short (200-400 ms) stimulus onset asynchrony (SOA), the difference between the ERP responses to priming and reversal conditions was significantly larger for the younger than for the older adults. This study provides the first electrophysiological evidence that brain aging leads to delayed processing of single motion direction and visual motion priming as early as 100 ms in the early visual cortex. Age-related changes in strength and temporal characteristics of neural responses in temporal-parietal regions were particularly pronounced in older adults when successive motion signals are placed closely in time, within 400 ms.     

Aging and the revelation effect

Previous research by M. W. Prull, L. L. Light, M. E. Collett, and R. F. Kennison (1998) has shown that older adults are not susceptible to a memory illusion referred to as the revelation effect. The authors examined the robustness of Prull et al.'s findings by having participants solve a word fragment (Experiment 1) or an anagram (Experiment 2) prior to the recognition memory decision. In both experiments, younger and older adults showed a reliable revelation effect. These results simultaneously challenge both the conclusion that older adults are not vulnerable to the revelation effect and the conclusion that aging is associated with increasing susceptibility to memory illusions.     

Relevant and Effective Theological Education in the Context of Twenty‐First Century South Asia

This essay considers Christian theological education in South Asia highlighting pertinent issues in pedagogical content, form, method, and praxis. Debunking the notion of students as “empty bottles” to be filled, and criticizing the top‐down model of education, the paper argues that theological education is an ongoing and interactive process in which students and teachers are participants who share and reflect upon each other's faith and socio‐cultural experiences. Participants reject, test, negotiate, and choose – while remaining open to the variety that is embodied in different human experiences. The paper stresses the relationship between the theological college and the church and calls for mutual responsibility, respect, and accountability. In an increasingly communal and fundamentalist atmosphere that poses a threat to multi‐culturalism, the role of the laity in shaping theological education is highlighted and public debate is encouraged. The paper calls for interactive and dialogic learning. A version of this paper was published in Ministerial Formation 100 (2003): 5–16.     

Leader-Member Exchange and Transformational Leadership: An Empirical Examination of Innovative Behaviors in Leader-Member Dyads

This paper evoked leader-member exchange (LMX) and transformational leadership theories to explain innovative behavior in leader-member dyads. Data from 225 leader-member dyads in a Fortune 500 manufacturing plant found exchange quality to be positively related to follower autonomy, leader support of followers, and follower commitment to the organization. Further, followers who were supported by their leaders and who were committed to the organization were more likely to be innovative. Also, exchange quality was directly related to innovative behaviors. Contrary to expectations, transformational leadership was negatively related to innovative behaviors of followers.