Bodies and occlusion: Item types,cognitive processes,and gender differences in mental rotation

The aim of the current study was to reexamine previous findings in which the magnitude of the male advantage in mental rotation abilities increased when participants mentally rotated occluded versus nonoccluded items and decreased when participants mentally rotated human figures versus blocks. Mainly, the study aimed to address methodological issues noted on previous human figure mental rotations tests as the items composed of blocks and human body were probably not equivalent in terms of their cognitive requirements. Our results did not support previous research on embodied cognition as mental rotation performance decreased among both men and women when mentally rotating human figures compared to block items. However, for women, the effect of occlusion was decreased when mentally rotating human figures. Results are discussed in terms of task difficulty and gender differences in confidence and guessing behaviour.     

Differentiating two- from three-dimensional mental rotation training effects

Block videogame training has consistently demonstrated transfer effects to mental rotation tasks, yet how variations in training influence performance with different stimuli remains unclear. In this study, participants took mental rotation assessments before and after a 3-week training programme based on 2D or 3D block videogames. Assessments varied in terms of dimensionality (2D or 3D) and stimulus type (polygon or body). Increases in videogame scores throughout training were correlated with mental rotation improvements. In particular, 2D training led to improvements in 2D tasks, whereas 3D training led to improvements in both 2D and 3D tasks. This effect did not depend on stimulus type, demonstrating that training can transfer to different stimuli of identical dimensionality. Interestingly, traditional gender differences in 3D mental rotation tasks vanished after 3D videogame training, highlighting the malleability of mental rotation ability given adequate training. These findings emphasize the influence of dimensionality in transfer effects and offer promising perspectives to reduce differences in mental rotation via designed training programmes.     

Truth table tasks: Irrelevance and cognitive ability

Two types of truth table task are used to examine people's mental representation of conditionals. In two within-participants experiments, participants either receive the same task-type twice (Experiment 1) or are presented successively with both a possibilities task and a truth task (Experiment 2). Experiment 3 examines how people interpret the three-option possibilities task and whether they have a clear understanding of it. The present study aims to examine, for both task-types, how participants' cognitive ability relates to the classification of the truth table cases as irrelevant, and their consistency in doing so. Looking at the answer patterns, participants' cognitive ability influences their classification of the truth table cases: A positive correlation exists between cognitive ability and the number of false-antecedent cases classified as “irrelevant”, both in the possibilities task and the truth task. This favours a suppositional representation of conditionals.     

Job insecurity and the benefits of work

The presented study combines conservation of resource theory with latent deprivation theory to explain the negative relationship between job insecurity and mental health. Specifically, we propose that people who face the threat of job insecure would perceive worse access to the benefits of work, which would explain the negative effect of job insecurity on mental health. In a two-wave study, employees rated their perceived job insecurity, their access to the benefits of work, and their mental health. Cross-sectional multiple mediation analysis at Time 1 (n = 295) and Time 2 (n = 236) showed that the negative relationship between job insecurity and mental health was partly due to a perceived lack of the benefits of work. Longitudinal results (n = 173) revealed that job insecurity was related to a decrease in financial benefits, which in turn predicted mental health. However, this effect was only visible if it was not controlled for prior levels of the benefits of work. The results are discussed with regards to conservation of resource theory and latent deprivation theory and the potential of this framework for explaining negative mental health effects of job insecurity.     

Mental illness has multiple causes: beliefs on causes of mental illness by congregants of selected neo-prophetic churches in Ghana

ABSTRACT

The present study explored perceived causes of, and preferred treatment approach for, mental illness among congregants of six Neo-prophetic churches in Accra and Kumasi through in-depth interviews. Using thematic analysis, five themes emerged from participants’ causal attributions of mental illness. These included lifestyles and environmental stressors, spiritual causes, interaction of multiple factors, trauma and biological causes. Additionally, participants discussed four main mechanisms through which stress leads to mental illness. These included persistent worrying over stressors, use of inappropriate coping strategies to cope with stress, refusal to talk about one's problems and individuals’ appraisal of stress and available coping resources. These beliefs directly determined congregants’ preferred treatment approach. Implications of the findings are discussed.     

Visual Imagery Processing and Knowledge of Famous Names in Alzheimer's Disease and MCI

ABSTRACT

The study of memory for famous people and visual imagery retrieval was investigated in patients in the early stages of Alzheimer's disease (AD) and in the prodromal stage of AD, so-called Mild Cognitive Impairment (MCI). Fifteen patients with AD (MMSE ≥23), 15 patients with amnestic MCI (a-MCI) and 15 normal controls (NC) performed a famous names test designed to evaluate the semantic and distinctive physical features knowledge of famous persons. Results indicated that patients with AD and a-MCI generated significantly less physical features and semantic biographical knowledge about famous persons than did normal control participants. Additionally, significant differences were observed between a-MCI and AD patients in all tasks. The present findings confirm recent studies reporting semantic memory impairment in MCI. Moreover, the current findings show that mental imagery is lowered in a-MCI and AD and is likely related to the early semantic impairment.     

Child,Adolescent and Adult Psychiatric Disorders in Africa: Implications for Psychological Interventions

The authors start by critically discussing some core features of Western psychiatric diagnosis, and present the cultural formulation as one approach to ensure that the cultural aspects of the diagnostic process are addressed, followed by a summary of what is known about the causes of psychiatric disorder. Five arguments are presented that provide support for the importance of psychiatric disorders in Africa: prevalence rates are high; psychiatric disorder is associated with a considerable burden from disability; in most cases, adults with psychiatric disorders experienced the onset of their disorder in childhood or youth; psychiatric disorders are strongly associated with medical conditions; and effective interventions exist for the majority of people suffering from psychiatric disorders. Against this background, current mental health services in Africa are reviewed. Finally, some suggestions are provided for how those providing psychological interventions can contribute to addressing the challenges posed by psychiatric disorders in Africa.     

Manual rotation training improves direction-estimations in a virtual environmental space

This study investigated in a virtual environment, whether the training of a small-scale ability, i.e., manual or mental rotation, has an influence on the large-scale ability to estimate a direction. Ninety-six participants completed a direction estimation task as a pretest and then received either a manual rotation or a mental rotation training or played a nonspatial computer game. After that they completed the direction estimation task once again. The results showed that the direction estimation error decreased from the pre- to posttest only for the manual rotation training group. For that, the small-scale spatial ability was at least partially related to the large-scale ability, which supports the Partial Dissociation Model.     

Odour-induced mental time travel into the past and future: Do odour cues retain a unique link to our distant past?

Proustian memories, or memories spontaneously evoked by taste and odours, have been argued to be uniquely linked to our remote past. This view suggests an asymmetry between odour-cued memories and odour-cued representations of future events regarding their temporal distance to the present. We investigated the temporal distribution and other phenomenological qualities of autobiographical memories and future events employing a 2 (temporal direction: past vs future)×3 (cue type: verbal, visual, and odour) mixed design. We found that while odour-evoked memories were predominantly from the first decade of life, the future condition showed a marked preponderance of odour-cued events in the upcoming year. Odour-evoked memories were also less specific than the verbal and visual conditions. The odour condition was responsible for interactions concerning coherency of the events and the events’ significance to the life story. The results support the view that odours possess a unique ability to evoke remote autobiographical memories.     

Mental Causation and Searle’s Impossible Conception of Unconscious Intentionality

In my article I evaluate Searle’s account of mental causation, in particular his account of the causal efficacy of unconscious intentional states. I argue that top-down causation and overdetermination are unsolved problems in Searle’s philosophy of mind, despite his assurances to the contrary. I also argue that there are conflicting claims involved in his account of mental causation and his account of the unconscious. As a result, it becomes impossible to understand how unconscious intentional states can be causally efficacious. My conclusion will be that if Searle’s conception of unconscious intentionality is to play a genuine role in the causal explanation of human action, it needs to be rethought.