Geographic Memory Bubbles: Recall of the Fifty United States

The participants (N?=?180) in this study resided in two different states (i.e., North Dakota (ND) and Georgia (GA)). Each participant completed two tasks in a counterbalanced order: 1) free recall of the fifty United States and 2) recall of the fifty United States using a numbered map of the United States where they matched the state name to the actual state on the map. There were significant differences in recall by task. Also, there were significant chi-square values and a significant interaction for the states recalled by ND participants and GA participants. Participants demonstrated high recall (70 % or higher) for the 5–7 states surrounding their state of residence (e.g., primary geographic memory bubble). All participants had high recall for the states of WA, CA, NV, TX, FL, ME, AK and HI (e.g., secondary geographic memory bubble). The implications of these results relating to geographic illiteracy, instruction, and memory are discussed.     

Childhood abuse and vulnerability to depression: Cognitive scars in otherwise healthy young adults

Models of depression vulnerability posit that negative early experiences, such as exposure to childhood abuse (CA), increase vulnerability to depression later in life. Though most victims of CA do not go on to develop depression, the question remains as to whether these individuals retain cognitive ‘scars’ that may contribute to depression vulnerability. The present study examined the relationship between self-reported, retrospective CA and cognitive vulnerability to depression in a carefully selected sample of young adults without current or past psychopathology. We measured cognitive vulnerability with both a self-report questionnaire, the Dysfunctional Attitudes Scale (DAS), and a measure of information processing bias, the Scrambled Sentences Test (SST). Self-reported severity of CA was associated with increased cognitive vulnerability to depression on both the DAS and SST. Vulnerability to depression as measured by the SST, but not by the DAS, prospectively predicted increases in depressive symptoms over a 6-month period. Scores on the SST also interacted with CA to predict increases in depressive symptoms. These findings demonstrate the pernicious effects of CA even in those without current or past psychopathology.     

Profiling the Presidents of Christian Colleges and Universities: A Comparative Study

Research was conducted among the presidents of higher education institutions which belong to the Council of Christian Colleges and Universities (CCCU). The purpose of the investigation was to develop a profile of their career paths to the presidency. Data about CCCU presidents were then compared to similar data regarding non-CCCU presidents studied by the American Council on Education. Similarities and differences between the two groups of presidents are presented in this article.     

Algorists,Algorithms, and Complexity: An Exploration of the Shavian Critique of Discrete State Computation

The status of computational theory in ecological psychology has been and continues to be a source of controversy. Over a period of more than 30 years, Robert Shaw and his colleagues have developed a powerful negative critique of computation based in part on the idea that computational theory cannot capture central aspects of the coimplicative structure of the relations between animals and their environments. Two aspects of the Shavian critique are considered in this article: the characterization of the algorist and the problem of complexity. It is argued, contrary to the critique, that computational theory offers a properly constrained formal view of the algorist and is not defeated by complexity. Computational ideas can therefore have a fundamental role to play in the further development of ecological psychology.     

Effects of dispositional self-focus,appraisal and attention instructions on responses to a threatening stimulus

Abstract

Two studies are reported which explored the relationship between self-focused attention and anxiety. The first study tested the hypotheses that self-focused attention is associated with anxiety in threatening situations and that the relationship is mediated by negative appraisal processes. Study 1 showed no significant interaction between self-focus and negative appraisal on state-anxiety. However, self-focus was associated with increments in state-anxiety, high levels of worry and somatic symptom reports in a threatening situation. The relationship between self-focus and state-anxiety was mediated by somatic symptoms. Study 2 used cognitive and somatic self-attention instructions and external focus instructions to verify the hypothesis that self-focus on somatic arousal is associated with anxiety. It is concluded that specific self-focusing tendencies are associated with the elicitation and exacerbation of anxiety.     

An experimental manipulation of metacognition: A test of the metacognitive model of obsessive-compulsive symptoms

The metacognitive model of obsessive-compulsive symptoms [Wells, A. (1997). Cognitive therapy of anxiety disorders: A practice manual and conceptual guide. Chichester, UK: Wiley] assigns a necessary causal role to metacognitive beliefs in the development of symptoms. The current study tested the model by evaluating the effects of experimentally manipulating such beliefs. A 2 × 2 factorial design was used. Thirty-two students with high and 32 students with low obsessional symptoms were subject to an experimental (metacognitive belief induction) or control (no metacognitive belief induction) condition. All participants underwent fake EEG recordings and were informed that the EEG could sense hypothalamus activity caused by having thoughts related to drinking. Participants in the experimental condition were told that if such thoughts were detected they may be exposed to an aversive noise. Controls were told that they may hear an aversive noise but this would be unrelated to the thoughts they had. Results showed a significant interaction effect between level of obsessional symptoms and belief induction. Analysis of this effect demonstrated that in the high obsession group, participants in the experimental condition had significantly more intrusions about drinking, time spent thinking about these intrusions and discomfort from them, than controls. There were also significant main effects on some measures, such as effort to control intrusions about drinking, with higher scores in the experimental condition irrespective of levels of obsessional symptoms. Results support the metacognitive model.     

State-Space Analysis of Working Memory in Schizophrenia: An FBIRN Study

The neural correlates of working memory (WM) in schizophrenia (SZ) have been extensively studied using the multisite fMRI data acquired by the Functional Biomedical Informatics Research Network (fBIRN) consortium. Although univariate and multivariate analysis methods have been variously employed to localize brain responses under differing task conditions, important hypotheses regarding the representation of mental processes in the spatio-temporal patterns of neural recruitment and the differential organization of these mental processes in patients versus controls have not been addressed in this context. This paper uses a multivariate state-space model (SSM) to analyze the differential representation and organization of mental processes of controls and patients performing the Sternberg Item Recognition Paradigm (SIRP) WM task. The SSM is able to not only predict the mental state of the subject from the data, but also yield estimates of the spatial distribution and temporal ordering of neural activity, along with estimates of the hemodynamic response. The dynamical Bayesian modeling approach used in this study was able to find significant differences between the predictability and organization of the working memory processes of SZ patients versus healthy subjects. Prediction of some stimulus types from imaging data in the SZ group was significantly lower than controls, reflecting a greater level of disorganization/heterogeneity of their mental processes. Moreover, the changes in accuracy of predicting the mental state of the subject with respect to parametric modulations, such as memory load and task duration, may have important implications on the neurocognitive models for WM processes in both SZ and healthy adults. Additionally, the SSM was used to compare the spatio-temporal patterns of mental activity across subjects, in a holistic fashion and to derive a low-dimensional representation space for the SIRP task, in which subjects were found to cluster according to their diagnosis.     

Visuo-haptic integration in object identification using novel objects

Although some studies have shown that haptic and visual identification seem to rely on similar processes, few studies have directly compared the two. We investigated haptic and visual object identification by asking participants to learn to recognize (Experiments 1, and 3), or to match (Experiment 2) novel objects that varied only in shape. Participants explored objects haptically, visually, or bimodally, and were then asked to identify objects haptically and/or visually. We demonstrated that patterns of identification errors were similar across identification modality, independently of learning and testing condition, suggesting that the haptic and visual representations in memory were similar. We also demonstrated that identification performance depended on both learning and testing conditions: visual identification surpassed haptic identification only when participants explored the objects visually or bimodally. When participants explored the objects haptically, haptic and visual identification were equivalent. Interestingly, when participants were simultaneously presented with two objects (one was presented haptically, and one was presented visually), object similarity only influenced performance when participants were asked to indicate whether the two objects were the same, or when participants had learned about the objects visually—without any haptic input. The results suggest that haptic and visual object representations rely on similar processes, that they may be shared, and that visual processing may not always lead to the best performance.     

Does facial processing prioritize change detection?: change blindness illustrates costs and benefits of holistic processing

There is broad consensus among researchers both that faces are processed more holistically than other objects and that this type of processing is beneficial. We predicted that holistic processing of faces also involves a cost, namely, a diminished ability to localize change. This study (N = 150) utilized a modified change-blindness paradigm in which some trials involved a change in one feature of an image (nose, chin, mouth, hair, or eyes for faces; chimney, porch, window, roof, or door for houses), whereas other trials involved no change. People were better able to detect the occurrence of a change for faces than for houses, but were better able to localize which feature had changed for houses than for faces. Half the trials used inverted images, a manipulation that disrupts holistic processing. With inverted images, the critical interaction between image type (faces vs. houses) and task (change detection vs. change localization) disappeared. The results suggest that holistic processing reduces change-localization abilities.