Track-draw: A graphical interface for controlling the parameters of a speech synthesizer

In this report we describe a graphical interface for generating voiced speech using a frequency-domain implementation of the Klatt (1980) cascade formant synthesizer. The input to the synthesizer is a set of parameter vectors, calledtracks, which specify the overall amplitude, fundamental frequency, formant frequencies, and formant bandwidths at specified time intervals. Tracks are drawn with the aid of a computer mouse that can be used either inpoint-draw mode, which selects a parameter value for a single time frame, or inline-draw mode, which uses piecewise linear interpolation to connect two user-selected endpoints. Three versions of the program are described: (1) SYNTH draws tracks on an empty time-frequency grid, (2) SPECSYNTH creates a spectrogram of a recorded signal upon which tracks can be superimposed, and (3) SWSYNTH is similar to SPECSYNTH, except that it generatessine-wave speech (Remez, Rubin, Pisoni, & Carrell, 1981) using a set of time-varying sinusoids rather than cascaded formants. The program is written for MATLAB, an interactive computing environment for matrix computation. Track-Draw provides a useful tool for investigating the perceptually salient properties of voiced speech and other sounds.     

Points of View

An adequate evaluation of argumentation requires identification of the object to which the argumentation pertains: the point of view. What are the distinguishing features of this object? In the pragma-dialectical argumentation theory, the object of argumentation is referred to by means of the notion ‘standpoint’. In other theories concerned with argumentation, reasoning, convincing or persuading, notions are used such as ‘thesis’, ‘conclusion’, ‘opinion’ and ‘attitude’. This paper is a survey of the characterisations of the object of argumentation given in the various theories. It discusses the pragma-dialectical argumentation theory, socio-psychological research on persuasion, cognitive research on reasoning, argumentative discourse analysis, two variants of informal logic, advocacy and debate, and the theory of communicative action. Next, it explores some relations between the notions used in these theories. Finally, it outlines some starting points for further research into the problems of identification.     

Religion and Mental Health: an exploration of the relationship between the ineffable and the indefinable

This article suggests that the relationship between religion and mental health is both important and complex. It reviews some studies of the relationship and suggests that religion can be good or bad for one's mental health, depending on the content of the religious message. It also presents a model of mental health and suggests that this or some similar scheme can be employed to assess the extent to which one's religious or value system promotes mental health.     

Research misconduct—Have we reached the turning point at last?

The laissez-faire attitude towards dishonesty in research has simply created an environment for widespread escalation of the problem. Can we now believe anything we read? Why should we have confidence in an author because of his eminence? Should we automatically accept that clinical trials are always conducted with total integrity? Why have we been afraid to tackle this crisis head-on?     

Person and environmental factors associated with well-being in medical students

Medical students are exposed to demanding academic workloads and are often under considerable psychological strain. This study examined important person and environmental variables that might predict their psychological well-being. Participants were 755 students in years 2-6 from 11 Australian medical schools. A web-based survey assessed well-being, personality, professional expectations, lifestyle expectations, barriers, academic stress, and debt. A hierarchical regression analysis demonstrated that extraversion, conscientiousness, professional expectations, and lifestyle expectations were positively associated with well-being, while academic stress, which was the strongest predictor, neuroticism, and concern about debt were negatively associated. Medical students who displayed a disposition that was outgoing, conscientious, and stable, who were less stressed about their academic workload and their level of debt, and who held higher expectations for their future professional career, and expectations of a balanced lifestyle, had better well-being. Medical educators should be aware of these factors and provide support and strategies that promote well-being to students during medical training.     

The age prospective memory paradox: young adults may not give their best outside of the lab

Previous research has identified the age prospective memory paradox of age-related declines in laboratory settings in contrast to age benefits in naturalistic settings. Various factors are assumed to account for this paradox, yet empirical evidence on this issue is scarce. In 2 experiments, the present study examined the effect of task setting in a laboratory task and the effect of motivation in a naturalistic task on prospective memory performance in young and older adults. For the laboratory task (Experiment 1, n = 40), we used a board game to simulate a week of daily activities and varied features of the prospective memory task (e.g., task regularity). For the naturalistic task (Experiment 2, n = 80), we instructed participants to try to remember to contact the experimenter repeatedly over the course of 1 week. Results from the laboratory prospective memory tasks indicated significant age-related decline for irregular tasks (p = .006) but not for regular and focal tasks. In addition, in the naturalistic task, the age benefit was eliminated when young adults were motivated by incentives (F < 1). In conclusion, the present results indicate that the variability of age differences in laboratory prospective memory tasks may be due in part to differences in the features of the prospective memory task. Furthermore, increases in motivation to perform the prospective task seem to help remedy prospective memory deficits in young adults in the naturalistic setting.     

Imitation improves language comprehension

Humans imitate each other during social interaction. This imitative behavior streamlines social interaction and aids in learning to replicate actions. However, the effect of imitation on action comprehension is unclear. This study investigated whether vocal imitation of an unfamiliar accent improved spoken-language comprehension. Following a pretraining accent comprehension test, participants were assigned to one of six groups. The baseline group received no training, but participants in the other five groups listened to accented sentences, listened to and repeated accented sentences in their own accent, listened to and transcribed accented sentences, listened to and imitated accented sentences, or listened to and imitated accented sentences without being able to hear their own vocalizations. Posttraining measures showed that accent comprehension was most improved for participants who imitated the speaker's accent. These results show that imitation may aid in streamlining interaction by improving spoken-language comprehension under adverse listening conditions.     

Religious Belief and Freedom of Expression: Is Offensiveness Really the Issue?

An objection frequently brought against critical or satirical expressions, especially when these target religions, is that they are ‘offensive’. In this article, I indicate why the existence of diverse and conflicting beliefs gives people an incentive to formulate their complaints in the language of offence. But I also cast doubt on whether people, in saying they are offended really mean to present that as the foundation of their complaint and, if they do, whether their complaint should weigh with us. These doubts do not apply to everything we might find offensive; in particular, they do not apply to simple cases of ‘sensory offence’; but they do apply to ‘belief-based offence’. Relying on offence also implies, inequitably, that different faiths should be differently protected depending on their susceptibility to offence; and the faithful themselves should worry about the flimsiness of claims based on ‘bare knowledge’ offence. I propose a principle of respect for beliefs as a differently grounded and more plausible reason for curbing our treatment of others’ beliefs. However, that principle has a limited compass and is hemmed in by the claims of free expression. It is also less suited to dictating the content of law than to influencing our conduct within the law.     

Economic inequality is linked to biased self-perception

People's self-perception biases often lead them to see themselves as better than the average person (a phenomenon known as self-enhancement). This bias varies across cultures, and variations are typically explained using cultural variables, such as individualism versus collectivism. We propose that socioeconomic differences among societies--specifically, relative levels of economic inequality--play an important but unrecognized role in how people evaluate themselves. Evidence for self-enhancement was found in 15 diverse nations, but the magnitude of the bias varied. Greater self-enhancement was found in societies with more income inequality, and income inequality predicted cross-cultural differences in self-enhancement better than did individualism/collectivism. These results indicate that macrosocial differences in the distribution of economic goods are linked to microsocial processes of perceiving the self.