From ultrafast to slow: Heating rate dependence of the glass transition temperature in metallic systems

When a solid crosses the glass transition, viscous flow sets in and the glass transforms into a supercooled liquid. The glass transition temperature exhibits a heating rate dependence which was previously observed to follow a Vogel–Fulcher–Tammann (VFT) equation. Here we report on a change in the heating rate dependence of the glass transition, determined by the distinct increase in the specific heat capacity, of a metallic glass. We combine standard techniques such as differential scanning calorimetry with recently developed ohmic heating techniques in order to cover seven orders of magnitude in heating rate. Contrary to previous reports, our results show that the change of the glass transition temperature cannot be described by a single VFT equation. Instead we find two distinct regimes which independently follow a VFT expression.     

Developing a measure of interpretation bias for depressed mood: An ambiguous scenarios test

The tendency to interpret ambiguous everyday situations in a relatively negative manner (negative interpretation bias) is central to cognitive models of depression. Limited tools are available to measure this bias, either experimentally or in the clinic. This study aimed to develop a pragmatic interpretation bias measure using an ambiguous scenarios test relevant to depressed mood (the AST-D).¹ In Study 1, after a pilot phase (N = 53), the AST-D was presented via a web-based survey (N = 208). Participants imagined and rated each AST-D ambiguous scenario. As predicted, higher dysphoric mood was associated with lower pleasantness ratings (more negative bias), independent of mental imagery measures. In Study 2, self-report ratings were compared with objective ratings of participants’ imagined outcomes of the ambiguous scenarios (N = 41). Data were collected in the experimental context of a functional Magnetic Resonance Imaging scanner. Consistent with subjective bias scores, independent judges rated more sentences as negatively valenced for the high versus low dysphoric group. Overall, results suggest the potential utility of the AST-D in assessing interpretation bias associated with depressed mood.     

Relationships between right-wing authoritarianism, terrorism threat, and attitudes towards restrictions of civil rights: a comparison among four European countries

The present study tested the role of right-wing authoritarianism (RWA), terrorist threat, and sociopolitical 'climate' as predictors of support for governmental anti-terrorism policies and actions. Two dimensions of analysis were defined: the presence versus absence of al-Qaeda attacks, and adherence to surveillance versus anti-surveillance mainstream politics. In order to study the influence of these two contextual dimensions on the expression of attitudes, we selected four European countries that fall into these two dimensions--Poland, Belgium, Spain, and the UK. Results from our study provide support for the contention that attitudes towards restrictions of civil rights are related to RWA independently of the cultural context. Moreover, in the UK sample, we found that the threat of terrorism increases acceptance of limitations of civil liberties, but only among people who hold authoritarian beliefs. However, in Spain, the other country that experienced terrorist attacks, this moderation effect was not found which is interpreted in terms of differences in the sociopolitical climate in both countries. As predicted, we did not find such moderation effect in countries in which threat is relatively low (Poland and Belgium). The results are discussed with reference to the conceptual framework based on the importance of fear experiences, security-focused policies, as well as the specific cultural context in the study of reaction to terrorist threat.     

The Demilitarization of Thai American Marriage Migration, 1980–2000

In this study, we look at marriage migration patterns among Thai Americans using US Census data drawn from 5% PUMS sets made available through the IPUMS project. Marriage is one of the most important means of migration to the USA and the overwhelming majority of Thai Americans are foreign-born women married to non-Thai men. Therefore, the sources and nature of Thai marriages to non-Thai men constitute essential elements of contemporary Thai migration and can provide valuable insight into how this key process of marriage migration can be established and maintained. Analyzing data from 1980, 1990, and 2000, our results are consistent with the argument that much of the marriage of Thai Americans to non-Thai is historically rooted in the military connection between the USA and Thailand. However, there is evidence that the marriages of Thai women to non-Thai men have been “demilitarized.” The military background of spouses has become much less compelling over the years as a predictor of the types of marriages resulting from marriage migration. Therefore, we argue that the American military presence in Southeast Asia established a pattern that continued to contribute to marriage migration even as that presence greatly diminished.     

Why are some moral beliefs perceived to be more objective than others?

Recent research has investigated whether people think of their moral beliefs as objectively true facts about the world, or as subjective preferences. The present research examines variability in the perceived objectivity of different moral beliefs, with respect both to the content of moral beliefs themselves (what they are about), and to the social representation of those moral beliefs (whether other individuals are thought to hold them). It also examines the possible consequences of perceiving a moral belief as objective. With respect to the content of moral beliefs, we find that beliefs about the moral properties of negatively valenced acts are seen as reliably more objective than beliefs about the moral properties of positively valenced acts. With respect to the social representation of moral beliefs, we find that the degree of perceived consensus regarding a moral belief positively influences its perceived objectivity. The present experiments also demonstrate that holding a moral belief to be objective is associated with a more ‘closed’ response in the face of disagreement about it, and with more morally pejorative attributions towards a disagreeing other person.     

A novel study: Forgetting curves and the reminiscence bump

This study examined the forgetting curves for information read in a novel. People read a 10-chapter novel where each chapter covered an approximately 10-year period in the life of the protagonist. After reading the entire novel, participants completed various memory tests in which they summarised the novel, provided associated information from cues, and answered specific questions. Performance was plotted as the amount of information or the accuracy of question answering for each chapter. All of the memory tests revealed similar patterns: (a) better performance for early information (a primacy effect), (b) a bump in performance when the protagonist was approximately 20 years old, and (c) a smaller bump in performance when the protagonist began a career later in life. These results are considered in the context of theories of forgetting, autobiographical memory, and situation models.     

‘See it doesn’t look pretty does it?’ Young adults’ airbrushed drinking practices on Facebook

A range of negative health outcomes are associated with young adults’ drinking practices. One key arena where images of, and interaction about, drinking practices occurs is social networking sites, particularly Facebook. This study investigated the ways in which young adults’ talked about and understood their uses of Facebook within their drinking practices. Face-to-face, semi-structured interviews were conducted with seven New Zealand young adults as they displayed, navigated and talked about their Facebook pages and drinking behaviours. Our social constructionist thematic analysis identified three major themes, namely ‘friendship group belonging’, ‘balanced self-display’ and ‘absences in positive photos’. Drinking photos reinforced friendship group relationships but time and effort was required to limit drunken photo displays to maintain an overall attractive online identity. Positive photos prompted discussion of negative drinking events which were not explicitly represented. Together these understandings of drinking photos function to delimit socially appropriate online drinking displays, effectively ‘airbrushing’ these visual depictions of young adults’ drinking as always pleasurable and without negative consequences. We consider the implications of these findings for ways alcohol health initiatives may intervene to reframe ‘airbrushed’ drinking representations on Facebook and provoke a deeper awareness among young people of drinking practices and their online displays.     

Rethinking value elicitation for personal consequential decisions

The application of multiattribute decision analysis to personal consequential decision problems can be unhelpful particularly where the analysis fails to help the decision maker to discover new values, or where the decision maker is unable to visualize the experience that may result from choosing a particular course of action. We concur with James March that values are best discovered by the act of choosing and experimenting but acknowledge that the act of choice can lead to irreversible consequences. Both of these problems suggest that techniques which assist the decision maker to envisage the consequences of choice need to be developed and incorporated into the modelling process. We suggest some forms that these techniques might take. Copyright © 1999 John Wiley & Sons, Ltd.