Measuring saccade curvature: A curve-fitting approach

Saccade curvature is becoming a popular measure for detecting the presence of competing saccadic motor programs. Several different methods of quantifying saccade curvature have been employed. In the present study, we compared these metrics with each other and with novel measures based on curve fitting. Initial deviation metrics were only moderately associated with the more widely used metric of maximum curvature. The latter was strongly related to a recently developed area-based measure and to the novel methods based on second- and third-order polynomial fits. The curve-fitting methods showed that although most saccades curved in only one direction, there was a population of trajectories with both a maximum and a minimum (i.e., double-curved saccades). We argue that a curvature metric based on a quadratic polynomial fit deals effectively with both types of trajectories and, because it is based on all the samples of a saccade, is less susceptible to sampling noise.     

Autonomy,Sanity and Moral Theory

The concept of autonomy plays atleast two roles in moral theory. First, itprovides a source of constraints upon action:because I am autonomous you may not interferewith me, even for my own good. Second, itprovides a foundation for moral theory: humanautonomy has been thought by some to producemoral principles of a more general kind.This paper seeks to understand what autonomyis, and whether the autonomy of which we arecapable is able to serve these roles. We wouldnaturally hope for a concept of autonomy thatis value-neutral rather than value-laden. Thatis to say, we would want the judgement that Iam autonomous to depend wholly on, say,structural features of my psychology, and in noway to require us to make ethical judgements, orother value judgements. Being value-neutral isperhaps desirable in a concept of autonomyserving the first role, and plausiblyindispensible in one playing the second. Ishall argue, however, that value-neutral conceptionsof autonomy are impoverished and out of linewith our intuitions; set out and defendan explicitly value-laden conception ofautonomy; and explore the implications of such a view for theability of autonomy to play the rolesmentioned above.     

Individual responses to climate change: Framing effects on pro‐environmental behaviors

Promoting effective responses to climate change, especially among people who reject its anthropogenic causes, has been challenging. Following a qualitative study, we experimentally induce one of four frames of reference (identity, biodiversity conservation, economic prosperity, and climate change), and assess their effects on participants’ behavioral intentions using three scales (consumption‐investment, consumption‐reduction, and political participation). The sample (N = 156) included people who thought climate change is natural and those who thought it is human‐induced. Results show a significant impact of the identity frame, relative to the climate‐change frame, for both consumption scales, in the total sample, and among those who reject the anthropogenic causes. These results offer a way to address behavioral resistances associated with antagonistic views on climate change.     

Distinguishing between the success and precision of recollection

Recollection reflects the retrieval of complex qualitative information about prior events. Recently, Harlow and Donaldson developed a method for separating the probability of recollection success from the precision of the mnemonic information retrieved. In the current study, we ask if these properties are separable on the basis of subjective reports—are participants aware of these two aspects of recollection and can they reliably report on them? Participants studied words paired with a location on a circle outline, and at test recalled the location for a given word as accurately as possible. Additionally, participants provided separate subjective ratings of recollection confidence and recollection precision. The results indicated that participants either recollected the target location with considerable (but variable) precision or retrieved no accurate location information at all. Importantly, recollection confidence reliably predicted whether locations were recollected, while precision ratings instead reflected the precision of the locations retrieved. The results demonstrate the experimental separability of recollection success and precision, and highlight the importance of disentangling these two different aspects of recollection when examining episodic memory.     

Cortisol response and psychological distress predict susceptibility to false memories for a trauma film

For eyewitness testimony to be considered reliable, it is important to ensure memory remains accurate following the event. As many testimonies involve traumatic, as opposed to neutral, events, it is important to consider the role of distress in susceptibility to false memories. The aim of this study was to investigate whether cortisol response following a stressor would be associated with susceptibility to false memories. Psychological distress responses were also investigated, specifically, dissociation, intrusions, and avoidance. Participants were allocated to one of three conditions: those who viewed a neutral film (N?=?35), those who viewed a real trauma film (N?=?35), and a trauma “reappraisal” group where participants were told the film was not real (N?=?35). All received misinformation about the film in the form of a narrative. Participants provided saliva samples (to assess cortisol) and completed distress and memory questionnaires. Cortisol response was a significant predictor of the misinformation effect. Dissociation and avoidance were related to confabulations. In conclusion, following a stressor an individual may differ with regard to their psychological response to the event, and also whether they experience a cortisol increase. This may affect whether they are more distressed later on, and also whether they remember the event accurately.     

Market Testing and Market Policing: Illuminating the Fluid micro-Sociology of the Illegal Drug Supply Enterprise in Liquid Modernity

Understanding Scotland’s illegal drug market continues to challenge social scientists. Most evidently neglected are processes related to social supply, from supplier perspectives. When analyzing illegal drug markets, demand-based approaches, customarily sourcing drug users, grossly overlook supplier perspectives. Thus, a qualitative research inquiry interviewing former drug dealers facilitated exploration of a supply-based approach that detailed processes of supply in relation to market level. Situating the findings within the disruptive lens of Chatwin and Potters’ (2014) concept of extending drug use normalization to embrace a dimension of market fluidity to drug supply dealing in Scotland, the researchers interviewed 35 former drug suppliers, learning about drug distribution behavioral patterns. Retail-level dealerships and higher market echelons exemplified an embodiment of the complexity of this social world. Any model aimed at characterizing Scotland’s illegal drugs market must acknowledge and incorporate aspects of social supply (e.g., recreational drugs) and recognize the fluid nature of “normalization,” taking account into its tacit embeddedness in a “local economy” with its own history and distinctive cultural geography. Unless the nuances of these various social formations are acknowledged, the potential of national policing strategies to address the crimes connected with drugs will go unrealized due to their conceptual and pragmatic inadequacies. It is ironic that a commitment to a generalized drug market conception of official enforcement is likely to sow the seeds for an unnecessary criminalization of minor serendipitous offenders and encourage reoffending patterns.     

Thinking love: Heidegger and Arendt

“Thinking Love: Heidegger and Arendt” explores the problematic nature of romantic love as it developed between Martin Heidegger and Hannah Arendt, whom Heidegger later called “the passion of his life.” I suggest that three different ways of understanding love can be found at work in Heidegger and Arendt’s relationship, namely, the perfectionist, the unconditional, and the ontological models of love. Explaining these different ways of thinking romantic love, this paper shows how the distinctive problems of the perfectionist and unconditional models played out in Heidegger and Arendt’s relationship and how that relationship eventually gave rise to the third, ontological understanding of love. This ontological vision of love combines some of the strengths of the perfectionist and unconditional views while avoiding their worst problems, and so emerges as perhaps the most important philosophical lesson about romantic love to be drawn from studying the lifelong love affair between two of the twentieth century’s greatest thinkers.     

The Impact of Mode of Administration on the Equivalence of a Test Battery: A Quasi‐Experimental Design

Two quasi‐experimental studies were conducted to examine the equivalence of an online unsupervised test battery (ICES ability, interests and personality tests) in relation to supervised paper administration and to test whether differences were because of the lack of supervision, the test being online as opposed to on a PC, or the computerization of the test. In the first study, data from a sample of 86 employed individuals suggested a lack of equivalence on ability scales between online unsupervised and paper supervised testing modes. Effect sizes ranged from .04 to .49 and corrected coefficients of equivalence and stability from .65 to .81. Study two used a more controlled design as well as obtaining data on personality and interest scales. Data from 118 college and university students were collected, with 64 students replicating the design in study 1 and 54 tested in supervised paper and supervised PC modes. For the ability scales, a similar pattern to study 1 was seen between supervised paper and unsupervised online testing as well as between supervised paper and supervised PC testing. Data for interest and personality scales were more positive showing lower effect sizes and higher coefficient values across testing modes. When ability test data from the online testing group were compared with data from the PC group, results showed that the scales were affected by the computerization process rather than the lack of supervision or because they were in online as opposed to PC mode.