Does maternal prenatal stress adversely affect the child's learning and memory at age six?

Prenatal maternal stress has been shown to affect postnatal development in animals and humans. In animals, the morphology and function of the offspring's hippocampus is negatively affected by prenatal maternal stress. The present study prospectively investigated the influence of prenatal maternal stress on learning and memory of 112 children (50 boys, 62 girls, Age: M=6.7 years, SD=8.4 months), with the Test of Memory and Learning (TOMAL). Maternal stress levels were determined three times during pregnancy by self-report questionnaires. Furthermore, maternal saliva cortisol samples were used as a measure of hypothalamus-pituitary-adrenal axis functioning. Results of hierarchical multivariate regression analyses showed that maternal life events measured during the first part of pregnancy were negatively associated with the child's attention/concentration index, while controlling for overall IQ, gender, and postnatal stress. No associations were found between prenatal maternal cortisol and the offspring's learning and memory.     

Focal distraction: spatial shifts of attentional focus are not required for contingent capture

Contingent capture occurs when distractors that share the target's defining attribute capture attention and slow down target identification. This slowdown has been attributed to an involuntary attentional shift to the location of a pertinent distractor. The present study examined an additional source of delay: the time spent in processing pertinent distractors. In 7 experiments, distractors were presented at fixation, and targets were presented either at fixation or peripherally. Contingent capture invariably occurred when a salient distractor was presented within about 600 ms before the target, even when spatial shifts in attentional focus were ruled out. A 2-stage model is proposed in which stimuli must pass an input filter tuned to the target's defining attribute before gaining access to a high-level stage that is unavailable while a distractor is being processed.     

AN EVALUATION OF LABELING-THEN-DOING WITH MODERATELY HANDICAPPED PERSONS: ACQUISITION AND GENERALIZATION WITH COMPLEX TASKS

We conducted two experiments in which moderately mentally retarded persons were trained first to label and then to enter characters into a computer, calculator, or checkbook (label-then-do) within a multiple baseline design. In Experiment 1, 5 young adults were trained to enter statistical programs into computers in an office setting. Following training, all subjects' use of verbal labels and key-entry skills generalized across tasks (programs) and settings (offices and computer terminals). In Experiment 2, 3 junior high school students were trained with self-labeling procedures to complete a key-entry task and to balance a checkbook. The performance of all students generalized across tasks and settings, and the use of labels generalized for 2 of the students. Results are discussed relative to mediated generalization and to establishing verbal control over behavior.     

Social identity theory: A conceptual and empirical critique from the perspective of a behavioural interaction model

After a conceptual and methodological critique of Social Identity Theory (SIT), it is argued, in sharp contrast to SIT but consistent with a Behavioural Interaction Model (BIM), that the allocations in the standard Minimal Group Paradigm (MGP) —which provide the main evidence for SIT— can be best reinterpreted as instrumental, rational behaviour aimed at maximizing the economic self-interests of the subjects rather than efforts on their part to strive for a positive social identity as SIT has claimed. Explicit social categorization appears to be only one of the many unit-forming factors which may affect allocations within and between group boundaries in the MGP. Group polarization effects indicate that groups, guided by their perceived interdependence on the recipients of their allocations seem more rational and effective than their individual members prior to the group discussion in maximizing their economic outcomes. Finally, it is concluded that BIM provides probably a more parsimonious explanation of all the usualfindings obtained by the standard MGP than SIT.     

You never know where you are going until you know where you have been: Disorganized search after stroke

Disorders in spatial exploration can be expressed in a disorganized fashion of target cancellation. There is debate regarding whether disorganized search is related to stroke in general, to right brain damage or to unilateral spatial neglect (USN) in particular. In this study, 280 stroke patients and 37 healthy control subjects performed a computerized shape cancellation test. We investigated the number of perseverations and several outcome measures regarding disorganized search: Consistency of search direction (best r), distance between consecutive cancelled targets and intersections with paths between previous cancelled targets. We compared performance between patients with left and right brain damage (L, R) and with and without USN (USN+, USN?), resulting in four subgroups: LUSN?, RUSN?, LUSN+, and RUSN+. Higher numbers of intersections were found for the left brain‐ and right brain‐damaged patients with USN and for the right brain‐damaged patients without USN, compared to healthy control subjects. Furthermore, right brain‐damaged patients with USN showed a higher number of intersections compared to right brain‐damaged patients without USN and compared to left brain‐damaged patients with USN. To conclude, disorganized search was most strongly related to the neglect syndrome, and patients with more severe USN were even more impaired.     

A propositional logic with explicit fixed points

This paper studies a propositional logic which is obtained by interpreting implication as formal provability. It is also the logic of finite irreflexive Kripke Models.A Kripke Model completeness theorem is given and several completeness theorems for interpretations into Provability Logic and Peano Arithmetic.     

Cognitive-behavioural approaches in the treatment of hypochondriasis: six single case cross-over studies.

This study evaluates a cognitive and a behavioural treatment protocol for hypochondrical complaints. In a cross-over design, six patients with a primary diagnosis of hypochondriasis were treated. Three of them first received a block of behavioural therapy (exposure in vivo and response prevention), followed by a block of cognitive therapy. The other three patients were first treated with cognitive therapy followed by behavioural therapy. The results were promising: four patients made significant improvements. The behavioural therapy sessions appeared to account more often for improvement than did the cognitive sessions. The sequence of behavioural therapy followed by cognitive therapy tended to be more successful than the other way around. The results of these six case studies suggest that exposure in vivo with response prevention and cognitive therapy may both be useful in the treatment of hypochondriasis. A journal controlled study is recommended.     

The formalization of Interpretability

This paper contains a careful derivation of principles of Interpretability Logic valid in extensions of I₀+₁.     

An exploration of spiritual superiority: The paradox of self‐enhancement

Spiritual training is assumed to reduce self‐enhancement, but may have the paradoxical effect of boosting superiority feelings. It can thus operate like other self‐enhancement tools and contribute to a contingent self‐worth that depends on one's spiritual accomplishments. In three studies (N = 533, N = 2,223, N = 965), a brief measure of spiritual superiority showed good internal consistency and discriminant validity. As predicted, it was distinctly related to spiritual contingency of self‐worth, illustrating that the self‐enhancement function of spirituality is similar to other contingency domains. It was correlated with self‐esteem and, more strongly, with communal narcissism, corroborating the notion of spiritual narcissism. Spiritual Superiority scores were consistently higher among energetically trained participants than mindfulness trainees and were associated with supernatural overconfidence and self‐ascribed spiritual guidance. Our results illustrate that the self‐enhancement motive is powerful and deeply ingrained so that it can hijack methods intended to transcend the ego and, instead, adopt them to its own service.