The role of eye fixations in concentration and amplification effects during multiple object tracking

When tracking spatially extended objects in a multiple object tracking task, attention is preferentially directed to the centres of those objects (attentional concentration), and this effect becomes more pronounced as object length increases (attentional amplification). However, it is unclear whether these effects depend on differences in attentional allocation or differences in eye fixations. We addressed this question by measuring eye fixations in a dual-task paradigm that required participants to track spatially extended objects, while simultaneously detecting probes that appeared at the centres or near the endpoints of objects. Consistent with previous research, we observed concentration and amplification effects: Probes at the centres of objects were detected more readily than those near their endpoints, and this difference increased with object length. Critically, attentional concentration was observed when probes were equated for distance from fixation during free viewing, and concentration and amplification were observed without eye movements during strict fixation. We conclude that these effects reflect the prioritization of covert attention to particular spatial regions within extended objects, and we discuss the role of eye fixations during multiple object tracking.     

Informed Outcomes: Self-rating measures and their use in psychodynamic therapy with adolescents

I am currently engaged in an A Space ¹ 1. A Space for Creative Learning and Support was set up as a research and development project in 1997 by The Glass-House Trust (a Sainsbury Family Charitable Trust), the Social Science Research Unit (Institute of Education, University of London) and Hackney Education. A core aim is to deliver psychodynamic therapies in the school setting, adapting and evolving current models of child and adolescent psychotherapy, where necessary, both in response to the educational context and to ensure that the needs of children and adolescents are best met. In 2010, A Space and The Centre for Psychoanalytic Studies, University of Essex, began a formal study into school-based therapy. Funded by The Glass-House Trust, this research will run through to 2013. A conference will be held in 2013, so that the findings can be more widely disseminated. /University of Essex research study looking at the ways in which psychodynamic counselling can best meet the needs of young people accessing therapy in the school setting. As part of the study, I have looked at the main outcome measures used in work with adolescents in clinics, the community and voluntary sector and in education settings. In this article, I look at the process of assessment, including the use of written self-rating outcome measures with young people. I critically review a selection of these and reflect on their application in practice. I go on to consider how collaborative written assessment procedures may be more appropriate for use by psychodynamic therapists working with school-based clients, given the challenges of delivering therapy in the education sector.     

Neural markers of subordinate‐level categorization in 6‐ to 7‐month‐old infants

Subordinate‐level category‐learning processes in infants were investigated with ERP and looking‐time measures. ERPs were recorded while 6‐ to 7‐month‐olds were presented with Saint Bernard images during familiarization, followed by novel Saint Bernards interspersed with Beagles during test. In addition, infant looking times were measured during a paired‐preference test (novel Saint Bernard vs. novel Beagle) conducted at the conclusion of ERP recording. Slow wave activity corresponded with learning a familiarized category at the subordinate and basic levels, whereas Negative central (Nc) and P400 components were linked with novel category preference. The results provide the first evidence identifying the neural markers of subordinate‐level categorization observed in looking‐time tasks conducted with infants. Moreover, when considered in conjunction with prior research investigating the neural markers of basic‐level categorization in infants, the findings indicate that (1) slow wave and Nc components of infant ERP waveforms are general markers for processes of category learning on the one hand and novel category preference on the other, (2) novel category preference for a contrast category at the basic and subordinate levels have the Nc component in common, but novel category preference at the subordinate level is accompanied by an additional P400 component, a finding in keeping with the notion that subordinate‐level categorization is governed by mechanisms supplementary to those underlying basic‐level categorization, and (3) slow wave activity associated with subordinate‐level learning followed that associated with basic‐level learning by approximately 200 ms, a result in accord with a coarse‐to‐fine scheme for the emergence of category partitioning.     

The role of visual attention in multiple object tracking: Evidence from ERPs

We examined the role of visual attention in the multiple object tracking (MOT) task by measuring the amplitude of the N1 component of the event-related potential to probe flashes presented on targets, distractors, or empty background areas. We found evidence that visual attention enhances targets and suppresses distractors (Experiments 1 and 3). However, we also found that when tracking load was light (two targets and two distractors), accurate tracking could be carried out without any apparent contribution from the visual attention system (Experiment 2). Our results suggest that attentional selection during MOT is flexibly determined by task demands, as well as tracking load, and that visual attention may not always be necessary for accurate tracking.     

Peer and teacher ratings of socially neglected and rejected fourth- and fifth-grade boys

Positive and negative sociometric nomination measures were administered to 86 fourth- and fifth-grade boys. Using a combination of these measures, popular (high positive; low negative), neglected (low positive, low negative), and rejected (low positive, high negative) children were identified and peer and teacher ratings of these children were obtained. Rejected children were seen by both peers and teachers as exhibiting more undesirable behaviors than either neglected or popular children. These findings coupled with those from several longitudinal investigations demonstrating that rejected children are at risk for the development of psychopathology during adolescence and adulthood, clearly points toward the importance of developing effective interventions for these children.     

Vocational persistence: An exploration of self-concept and dissonance theories

There is an increasing number of individuals who leave one occupation or profession for another even after many years of investment. This phenomenon is increasingly apparent among religious groups. This study examines the application of dissonance theory to self-concept implementation in an attempt to explain the motivational process of vocational persistence among a group of Catholic seminarians.     

Control by stimulus features during fading.

Sixteen children were given four successive circle-size discrimination problems with luminance as the fading stimulus. Children who were first presented with a difficult size discrimination failed to acquire this discrimination. Those who first received an easy discrimination learned the difficult discrimination. At the end of each 10-trial block, two probe stimuli were presented to monitor any shift in control from luminance to size. One probe was the same size as the positive stimulus but of different luminance; the other was the same luminance but of different size. If, in the course of fading, size and luminance both controlled responding, fading was successful. If luminance alone controlled responding until the end of fading, the size discrimination was not established. Dual control, and thus successful fading, resulted when the target stimuli were very discriminable, or when the target stimuli were subtly different provided that previous fading series had first established less subtle discriminations.     

Puzzles about Trust

This article is an attempt to deepen our understanding of trust. To this end, several elements frequently present in trust‐relationships are first identified, and then three underappreciated puzzles about trust are described. Next, it is argued that certain leading analyses of trust are unsatisfactory, in part, because they are unable to solve these puzzles succesfully. Finally, an alternative way of thinking about trust is proposed. It is agued that this new way of thinking about trust is both independently plausible and better able to solve these puzzles about trust.     

The role of awakening cortisol and psychological distress in diurnal variations in affect: a day reconstruction study

People often feel unhappy in the morning but better later in the day, and this pattern may be amplified in the distressed. Past work suggests that one function of cortisol is to energize people in the morning. In a study of 174 students, we tested to see whether daily affect patterns, psychological distress, and awakening cortisol levels were interlinked. Affect levels were assessed using the Day Reconstruction Method and psychological distress was measured using the Depression Anxiety Stress Scales. On average, positive affect increased markedly in a linear pattern across the day, whereas negative affect decreased linearly. For the highly distressed, this pattern was stronger for positive affect. Lower than average morning cortisol, as assessed by two saliva samples at waking and two samples 30 min after waking, predicted a clear increasing pattern of positive affect throughout the day. When we examined the interlinkages between affect patterns, distress, and cortisol, our results showed that a pronounced linear increase in positive affect from morning through to evening occurred chiefly among distressed people with below average cortisol levels upon awakening. Psychological distress, although not strongly associated with morning cortisol levels, does appear to interact with cortisol levels to profoundly influence affect.