Olfactory acuity and cognitive function converge in older adulthood: support for the common cause hypothesis

Visual and auditory thresholds and cognitive variables have shown converging losses in old age, which might exist because standard cognitive tests rely on these modalities for assessment. The present study investigated the common cause hypothesis in another sensory modality. Structural equation modeling tested the fit of a model representing the common cause hypothesis for olfactory acuity and cognitive function data from 98 nondemented older adults and 103 younger adults. The model fit better the data from the older adults, consistent with the common cause hypothesis. In addition, unique influences of age beyond those shared between cognitive and sensory variables were also demonstrated. The results suggest that olfactory functioning may be a valid indicator of the integrity of the aging brain in older adults.     

Activation of the attachment system in adulthood: threat-related primes increase the accessibility of mental representations of attachment figures

Three studies explored the effects of subliminal threat on the activation of representations of attachment figures. This accessibility was measured in a lexical decision task and a Stroop task following threat- or neutral-word primes, and was compared with the accessibility of representations of other close persons, known but not close persons, and unknown persons. Participants also reported on their attachment style. Threat primes led to increased accessibility of representations of attachment figures. This effect was specific to attachment figures and was replicated across tasks and experiments. Attachment anxiety heightened accessibility of representations of attachment figures even in neutral contexts, whereas attachment avoidance inhibited this activation when the threat prime was the word separation. These effects were not, explained by trait anxiety. The discussion focuses on the dynamics of attachment-system activation in adulthood.     

Developmental dyslexia and widespread activation across the cerebellar hemispheres

Developmental dyslexia is the most common learning disability in school-aged children with an estimated incidence of five to ten percent. The cause and pathophysiological substrate of this developmental disorder is unclear. Recently, a possible involvement of the cerebellum in the pathogenesis of dyslexia has been postulated. In this study, 15 dyslexic children and 7 age-matched control subjects were investigated by means of functional neuroimaging (fMRI) using a noun-verb association paradigm. Comparison of activation patterns between dyslexic and control subjects revealed distinct and significant differences in cerebral and cerebellar activation. Control subjects showed bilaterally well-defined and focal activation patterns in the frontal and parietal lobes and the posterior regions of the cerebellar hemispheres. The dyslexic children, however, presented widespread and diffuse activations on the cerebral and cerebellar level. Cerebral activations were found in frontal, parietal, temporal and occipital regions. Activations in the cerebellum were found predominantly in the cerebellar cortex, including Crus I, Crus II, hemispheric lobule VI, VII and vermal lobules I, II, III, IV and VII. This preliminary study is the first to reveal a significant difference in cerebellar functioning between dyslexic children and controls during a semantic association task. As a result, we propose a new hypothesis regarding the pathophysiological mechanisms of developmental dyslexia. Given the sites of activation in the cerebellum in the dyslexic group, a defect of the intra-cerebellar distribution of activity is suspected, suggesting a disorder of the processing or transfer of information within the cerebellar cortex.     

Self-motion perception and vestibulo-ocular reflex during whole body yaw rotation in standing subjects: the role of head position and neck proprioception

Self-motion perception and vestibulo-ocular reflex (VOR) were studied during whole body yaw rotation in the dark at different static head positions. Rotations consisted of four cycles of symmetric sinusoidal and asymmetric oscillations. Self-motion perception was evaluated by measuring the ability of subjects to manually track a static remembered target. VOR was recorded separately and the slow phase eye position (SPEP) was computed. Three different head static yaw deviations (active and passive) relative to the trunk (0°, 45° to right and 45° to left) were examined. Active head deviations had a significant effect during asymmetric oscillation: the movement perception was enhanced when the head was kept turned toward the side of body rotation and decreased in the opposite direction. Conversely, passive head deviations had no effect on movement perception. Further, vibration (100 Hz) of the neck muscles splenius capitis and sternocleidomastoideus remarkably influenced perceived rotation during asymmetric oscillation. On the other hand, SPEP of VOR was modulated by active head deviation, but was not influenced by neck muscle vibration. Through its effects on motion perception and reflex gain, head position improved gaze stability and enhanced self-motion perception in the direction of the head deviation.     

On the replicability of the affective priming effect in the pronunciation task

Bargh, Chaiken, Raymond, and Hymes (1996) and Hermans, De Houwer, and Eelen (1994) showed that a valenced target word is pronounced faster after the presentation of an affectively related prime word than after the presentation of an affectively unrelated prime word. This finding is important because it provides crucial evidence for the hypotheses that stimulus evaluation (a) is goal-independent and (b) facilitates the encoding of stimuli that have the same valence. However, recent studies indicate that the affective priming effect is not a reliable finding in the standard pronunciation task. We report the results of a nearly exact replication of Bargh et al.'s (1996) Experiment 2. In line with previous replication studies, we failed to detect the affective priming effect.     

The interaction between time and number in a temporal bisection task: a reply to Vicario (2011)

Abstract. We discuss the results of Vicario (2011, Perception 40 23-29), in the light of an experiment designed to bypass some of the limits of that study. There, participants were asked to perform a temporal bisection on numerical stimuli (small or large digits) presented either for 700/900 ms or 2000/2200 ms. For the two longest durations only, bisections of larger digits occurred later than those of smaller digits. Here, subjects judged the temporal position of a flick occurring during the visual presentation of a digit (1, 5, or 9) which lasted on the screen for either 700 ms or 2000 ms. Results revealed no difference in the perceived temporal midpoints of large compared to small digits. In contrast, they showed a response bias: only with the shortest-duration stimuli the digit's magnitude affected the subject's response.     

Die psychische Dimension von Institutionen

The psychological dimension of an institution comprises the conscious and unconscious experiences of its members. This article analyzes from the standpoint of an “advocatus diaboli” processes effecting that institutions often do not fulfill the tasks for which they were created. Freud developed in Group Psychology and the Analysis of the Ego a scarcely noticed model of “two psychologies” in institutions: depending on whether the individual is positioned “at the top” or “at the bottom”, it develops a psychology of a group member or one of a leader. Both may be transformed into each other. In the present article the author examines both the renunciation of power imposed on the “group individuals” and its consequences for the individual, and the effects of hierarchical advancement on the mind. As examples for the interrelations of violence, castration and law psychoanalytic and state institutions (bureaucracies) are presented.     

Tourist Assessment of Archaeological Sites: The Case of The Archaeological Complex of Itálica (Seville,Spain)

ABSTRACT

Few studies have examined visitors’ assessments of their stay at archaeological complexes. This study analyzed this issue, focusing on Itálica (Seville, Spain). The results show that three factors are important in assessing a visit: quality of service, perceived sacrifice and satisfaction. With regard to these three factors, significant differences were found depending on whether the visitor had previously been to Itálica and where he or she came from. From these results, the authors have identified possible ways of improving the services provided, and, consequently, visitor satisfaction.     

Participation restrictions at work indicate participation restrictions in other domains of life

Health problems are often associated with activity limitations and participation restrictions, as defined in the International Classification of Functioning, Disability and Health (ICF). This often affects the workplace in the form of sick leave or a reduction in productivity. The question is, "to what extent are participation restrictions at work related to participation restrictions in other domains of life?" A total of 382 primary health care patients (aged 18-65) were asked to provide information on their employment status, perceived health-related workplace problems and sick leave status. Health-dependent participation restrictions across different domains of life were assessed using the Index for Measuring Participation Restrictions (IMET) self rating questionnaire. Currently unemployed patients reported significantly higher degrees of participation restrictions across all domains of life than the employed participants. Employed patients with workplace problems scored higher than patients without workplace problems. The domain of work encompassed the highest level of impairment, while the lowest was observed in personal relationships. Workplace problems occur frequently for primary health care patients. They coincide with participation restrictions in other domains of life. For patients who complain about their capacity to work, diagnosis and treatment must not only focus on the work domain, but also enquire into and consider participation restrictions in other domains of life.