Statistical classification of black-capped (Poecile atricapillus) and mountain chickadee (Poecile gambeli) call notes

Both black-capped (Poecile atricapillus) and mountain chickadees (Poecile gambeli) produce a chick-a-dee call that consists of several distinct note types. In some regions, these 2 species live sympatrically, and it has been shown that 1 species will respond weakly to songs of the other. This suggests that chickadee song, and potentially other of their vocalizations, contains species-specific information. We tested the possibility that call notes were acoustically sufficient for species identification. Black-capped and mountain non-D notes were summarized as a set of 9 features and then analyzed by linear discriminant analysis. Linear discriminant analysis was able to use these notes to identify species with 100% accuracy. We repeated this approach, but with black-capped and mountain D notes that were summarized as a set of 4 features. Linear discriminant analysis was able to use these notes to identify species with 94% accuracy. This demonstrates that any of the note types in these chickadee calls possesses sufficient information for species classification.     

Manual assisted cognitive treatment for deliberate self-harm in borderline personality disorder patients

This study examines the efficacy of a short-term individual therapy, Manual Assisted Cognitive Treatment (MACT), which was developed to treat parasuicidal (suicidal or self-harming) patients. In this trial, MACT was modified to focus on deliberate self-harm (DSH) in patients with borderline personality disorder (BPD). Thirty BPD patients who were engaged in DSH while in ongoing treatments, i.e., treatment-as-usual (TAU), were randomly assigned to receive MACT (N = 15) or not. DSH and level of suicide ideation were assessed at the baseline, at completion of the MACT intervention, and six months later. Results indicated that MACT was associated with significantly less frequent DSH upon completion of the intervention and with significantly decreased DSH frequency and severity at the six months follow-up. Moreover, MACT's contribution to reducing DSH frequency and severity was greater than the contribution by the amount of concurrent treatments. In contrast, MACT did not affect the level of suicide ideation and time-to-repeat of DSH. In conclusion, MACT seems to be a promising intervention for DSH in patients with BPD. More definitive studies are needed.     

Factors predicting the use of technology: findings from the Center for Research and Education on Aging and Technology Enhancement (CREATE)

The successful adoption of technology is becoming increasingly important to functional independence. The present article reports findings from the Center for Research and Education on Aging and Technology Enhancement (CREATE) on the use of technology among community-dwelling adults. The sample included 1,204 individuals ranging in age from 18-91 years. All participants completed a battery that included measures of demographic characteristics, self-rated health, experience with technology, attitudes toward computers, and component cognitive abilities. Findings indicate that the older adults were less likely than younger adults to use technology in general, computers, and the World Wide Web. The results also indicate that computer anxiety, fluid intelligence, and crystallized intelligence were important predictors of the use of technology. The relationship between age and adoption of technology was mediated by cognitive abilities, computer self-efficacy, and computer anxiety. These findings are discussed in terms of training strategies to promote technology adoption.     

Serotonin transporter (5-HTTLPR) genotype, childhood abuse, and suicide attempts in adult psychiatric inpatients

There is growing evidence that a functional polymorphism in the serotonin transporter gene (5-HTTLPR) moderates the impact of negative life events (e.g., childhood abuse) on the development of depression. However, it is unclear whether the gene x environment interaction predicts suicide attempts specifically. In addition, previous studies have not examined different forms of childhood abuse separately. In the current study, we found that 5-HTTLPR genotype moderated the link between childhood physical and sexual, but not emotional, abuse and adult psychiatric inpatients' histories of suicide attempts.     

Memories of uncertain origin: dreamt or real?

The existence of a memory whose origin, real or dreamt, was uncertain was reported by just over half of an undergraduate sample of 358. Each respondent described one such memory if they had one. The memories were typically of mundane events, although 10 respondents described possible crimes. Respondents were often concerned to resolve the origin of these memories. Their plausibility, vividness, and how well the events fitted into one's life were often considered by the respondents, but where resolution occurred it was frequently based on evidence obtained from the physical or social environment. The reported qualities of the event did not correlate with whether the respondent thought it more likely to have been originally a dream or a real event.     

Expert face coding: Configural and component coding of own-race and other-race faces

Configural and holistic coding are hallmarks of face perception. Although recent studies have shown that own-race faces are coded more holistically than other-race faces, the evidence for better configural coding of own-race faces is equivocal. We directly measured configural and component coding of own- and other-race male faces in Caucasian and Chinese participants. We manipulated individual features (components) or their spatial relations (configurations) using a novel morphing method to vary difficulty parametrically and tested sensitivity to these changes in a sequential matching task. Both configural and component coding were better for upright own-race than for upright other-race faces. Inversion impaired detection of configural changes more than it did detection of component changes, but also impaired performance more for easier discriminations,independent of type of change. These results challenge explanations of face expertise that rely solely on configural and holistic processing, and also call into question the widespread interpretation of large inversion decrements as diagnostic of configural coding.     

A team-taught interdisciplinary approach to engineering ethics

This paper outlines the development and implementation of a new course in Engineering Ethics at the University of Tennessee. This is a three-semester-hour course and is jointly taught by an engineering professor and a philosophy professor. While traditional pedagogical techniques such as case studies, position papers, and classroom discussions are used, additional activities such as developing a code of ethics and student-developed scenarios are employed to encourage critical thinking. Among the topics addressed in the course are engineering as a profession and its role in society; ethical successes and failures; risk, safety, and the environment; professional responsibilities; credit and intellectual property; and international concerns. The most significant aspect of the course is that it brings both engineering and non-engineering points of view to the topics at hand. This is accomplished in two ways. First, as mentioned previously, it is team-taught by engineering faculty with an interest in ethical and societal issues, and by philosophy faculty with expertise in the field of professional ethics and an interest in science and technology. Second, the course is offered to both engineers and non-engineers. This mix of students requires that all students must be able to explain their technical and ethical decisions in a non-technical manner. Work teams are structured to maximize interdisciplinary interaction and to foster insights by each student into the professional commitments and attitudes of others. An earlier version of this paper was presented at the 2005 conference, Ethics and Social Responsibility in Engineering and Technology, Linking Workplace Ethics and Education, co-hosted by Gonzaga University and Loyola Marymount University, Los Angeles, CA, USA, 9–10 June 2005.     

Decision and experience: why don't we choose what makes us happy?

Recent years have witnessed a growing interest among psychologists and other social scientists in subjective well-being and happiness. Here we review selected contributions to this development from the literature on behavioral-decision theory. In particular, we examine many, somewhat surprising, findings that show people systematically fail to predict or choose what maximizes their happiness, and we look at reasons why they fail to do so. These findings challenge a fundamental assumption that underlies popular support for consumer sovereignty and other forms of autonomy in decision-making (e.g. marriage choice), namely, the assumption that people are able to make choices in their own best interests.     

Aging, encoding fluency, and metacognitive monitoring

Encoding fluency (how rapidly one generates a mediator for a new association) may be a cue used to judge one's own learning. To evaluate age differences in utilization of this cue, older and younger adults were instructed to use interactive imagery to study paired associates, pressing a button to indicate when an image had been formed for a given pair. A judgment of learning (JOL) was also made immediately after each pair had been studied. Hence, at least two cues pertaining to encoding fluency-whether an image had been formed (a diagnostic cue) and the latency of formation (a nondiagnostic one)-were available when making JOLs. Age equivalence was found in JOL accuracy, and JOLs for both age groups were positively related to imagery formation and were negatively related to the latency of image formation. Moreover, subjectively judged latency correlated higher with JOLs than actual (objective) latency, supporting the hypothesis that perceived fluency is a cue used in constructing JOLs.