Understanding the effects of moving visual stimuli on unilateral neglect following stroke

Moving visual stimuli have been shown to reduce unilateral neglect (ULN), however, the mechanisms underlying these effects remain poorly understood. This study compared lateralised and non-lateralised moving visual stimuli to investigate whether the spatial characteristics or general alerting properties of moving visual stimuli are responsible for reducing neglect. Post-stroke left neglect patients as well as healthy and patient control subjects were tested on a computerised line bisection task under six visual stimulus conditions. The key finding was that, relative to the no stimulus condition, leftward moving and left-sided moving visual stimuli shifted neglect patients' bisection errors leftward while the non-lateralised random moving visual stimuli did not reduce neglect patients' rightward bisection errors. The results provide evidence that spatial characteristics rather than general alerting properties of moving visual stimuli reduce rightward bisection errors in ULN. Moreover, the pattern of findings strongly supports the notion that moving visual stimuli reduce neglect by capturing attention and drawing it to a spatial location rather than by activating the attentional system via superior collicular neurons.     

Who's afraid of the Wolfe couple: the interlocking traumatic scene

Fulfilling intimate relationships require a constant emotional and psychological struggle to disentangle strangleholds created by the interpenetration of unresolved complexes stemming from previous disappointing relational experiences. These complexes may manifest as an encrypted pattern of engagement that each partner brings to the marriage, like a 'malignant dowry'. The dowry box, once opened, releases its nefarious contents to create an extremely complex and entangled drama I call the 'interlocking traumatic scene'. Partners unconsciously entrap each other to play a part in such a scene with double (sometimes multiple) roles for each antagonist. The imaginal space between the two characters can be seen as a projection screen, upon which are superimposed two separate shadow plays, one on each side of the screen. A third play, which is a co-created product of these two individual traumatic scenes, can also be observed. Three plays are performed simultaneously. The defensive systems that the two individuals bring to the equation dovetail together, but the actual interlocking mechanism itself deadlocks in such a way that it seems to have its own malignant presence, a 'malevolent third' (after Ogden 1994). I outline therapeutic interventions using the metaphor of the therapist as 'anti-director' and I introduce my concept of the conjoint selected fact (after Bion 1963 after Poincaré 1952).     

Assessing cross-cultural differences through use of multiple-group invariance analyses

The use of structural equation modeling in cross-cultural personality research has become a popular method for testing measurement invariance. In this report, we present an example of testing measurement invariance using the Sense of Coherence Scale of Antonovsky (1993) in 3 ethnic groups: Chinese, Japanese, and Whites. In a series of increasingly restrictive constraints on the measurement models of the 3 groups, we demonstrate how to assess differences among the groups. We also provide an example of construct validation.     

Trade-offs, individual differences, and misunderstandings about evolutionary psychology

Replies to comments on Evolutionary psychology: Controversies, questions, prospects, and limitations (see record 2010-02208-001) by Confer et al. The purpose of which was to clarify the logic of evolutionary psychology and clear up some of the more common misunderstandings about it. In this response, we address the key points raised by the commentators.     

Suicide schemas in non-affective psychosis: An empirical investigation

Suicide is the leading cause of premature death among individuals experiencing psychosis. The risk of suicide is proposed to increase with a greater potential for activation of suicide related schemas. Empirical representations of suicide schemas were compared between individuals experiencing non-affective psychosis, with and without a history of suicidal behaviour. Employing a cross-sectional between-groups comparison design, 84 participants, previously diagnosed with a non-affective psychotic disorder, were recruited from community mental health services. Participants completed a demographic questionnaire and clinical measures of psychopathology. To assess participants’ suicide schemas, a series of direct and indirect cognitive tasks were designed and administered. Pathfinder analysis enabled the construction of empirically derived representations of the groups’ suicide schemas based on responses to the cognitive tasks. The suicide group achieved significantly greater scores on measures of anxiety, depression, hopelessness and suicidality than the non-suicide group, but not on measures indicative of the severity of psychosis. The suicide schema for the suicide group was more elaborate and extensive than for the non-suicide group, even when clinical measures were taken into account. Clinical and theoretical implications are discussed.     

Locke's theory of classification

In §155 of his New Theory of Vision Berkeley explains that a hypothetical ‘unbodied spirit’ ‘cannot comprehend the manner wherein geometers describe a right line or circle’.1 ¹All references to Berkeley are from, A. A. Luce and T. E. Jessop (eds.), The Works of George Berkeley, Bishop of Cloyne (London: Thomas Nelson and Sons, Ltd., 1948) The following abbreviations are used: An Essay Towards A New Theory of Vision, section x = New Theory x; Philosophical Commentaries, entry x = Commentaries x; Part I of A Treatise concerning the Principles of Knowledge, section x = Principles x. All other references to Berkeley's works are of the form The Works of George Berkeley, Bishop of Cloyne, volume x, page y = Works, x, y. The reason for this, Berkeley continues, is that ‘the rule and compass with their use being things of which it is impossible he should have any notion.’ This reference to geometrical tools has led virtually all commentators to conclude that at least one reason why the unbodied spirit cannot have knowledge of plane geometry is because it cannot manipulate a ruler or a compass. In this article I will show that such an interpretation is flawed. I will instead argue that Berkeley's understanding of Euclidian geometry was based on Isaac Barrow's account of the foundations of geometry. On this view geometrical objects are conceived in terms of the idealized motion that generates the objects of geometry. Consequently, that what the unbodied spirit cannot do in this context is to form an idea of motion rather than being unable to handle geometrical tools.     

An Exploratory Study of the Relationship Between Mood States and Creativity Self-Perceptions

The purpose of this study was to investigate the relationship between noninduced mood state and self-perceptions of creativity. Undergraduate teacher education students (N = 287) completed 2 mood state inventories (Teasdale 100-Point Thermometer and Perception of Mood States) and a creative self-perception inventory (What Kind of Person Are You? [Khatena &; Torrance, 1976]). The group expressed overall indications of happiness and normally distributed creativity perceptions. Findings were mixed when the 5 scales of the creativity measure (i.e., Acceptance of Authority, Self-confidence, Inquisitiveness, Awareness of Others, and Disciplined Imagination) were correlated to the 6 dimensions of mood (i.e., Tension/Anxiety, Depression/Dejection, Anger/Hostility, Vigor/Activity, Fatigue/Inertia, and Confusion/Bewilderment). There was, however, some indication that positive mood was related to creative self-perception. Results are discussed and future research is suggested.     

An Expanded View of Intersubjectivity in Infancy and its Application to Psychoanalysis

We consider the relevance of forms of intersubjectivity in infancy to the nonverbal and implicit dimension of intersubjectivity in psychoanalysis. The term forms of intersubjectivity, within the adult explicit and implicit modes and the infant presymbolic implicit mode, is offered to clarify the multiple meanings of intersubjectivity. The ideas of infant intersubjectivity of Meltzoff, Trevarthen, and Stern that have particular relevance for psychoanalysis are highlighted: the dialogic origin of mind, the role of correspondences, and the idea that symbolic forms of intersubjectivity are built on presymbolic forms. We build on their work to define a fourth position: that the full range of patterns of interactive regulation provides the broadest definition of the presymbolic origins of intersubjectivity, with correspondence being only one of many critical patterns. We additionally address the place of interactive regulation, problems with the concept of matching, the role of self-regulation, the role of difference, and the “balance model” of self- and interactive regulation. We take the position that all forms of interactive regulation are relevant to the possibility of perceiving and aligning oneself with the moment-by-moment process of the other. A broadened understanding of intersubjectivity in infancy sets the stage for a more fruitful exchange between infant researchers and psychoanalysts.