Kedushah: The Sexual Abstinence of Married Men in Gur, Slonim, and Toledot Aharon

Kedushah (holiness) developed as a pietistic ideal for the virtuous few, encouraging married men to limit to the minimum the frequency and modes of sexual intercourse with their wives. Today, the hasidic groups of Gur, Slonim, and Toledot Aharon (Toldes Aaron) radicalize this ideal by imposing it on the community as a whole. Gur’s version is the most restrictive and the only one formalized as a set of ordinances (takunes), while Toldes Aaron’s version is the most lenient. The radical kedushah norms have given rise to controversy and dissent. Prominent rabbis have argued that they were at odds with the halakhah, offensive to women, and harmful to men, while marriage guides within the Gur community have debated their rigidity and universal applicability. The hasidic Rebbes themselves are reticent about the topic, addressing it only in unpublished homilies and personal letters, from which excerpts appear in print for the first time in the present paper. The rise of these kedushah norms in modern Hasidism should be attributed to (a) the inherent hasidic quest for spiritual renewal, which has generated a range of “mysticism substitutes”; (b) resistance to modern “promiscuity”; (c) the historical legacies of these particular hasidic groups, which they strove to revive after the Holocaust by generating new spiritual energies that would attract “virtuous” young men to their ranks. One of the ways to achieve this was to renew the old battle against the traditional enemy—the sexual drive.     

Time-window for sensitivity to cooling distinguishes the effects of hypothermia and protein synthesis inhibition on the consolidation of long-term memory

The effects of hypothermia on memory formation have been examined extensively, and while it is clear that post-training cooling interferes with the process of consolidation, the nature of the temperature sensitive processes disrupted in this way remain poorly defined. Post-training manipulations that disrupt consolidation tend to be effective during specific time-windows of sensitivity, the timing and duration of which are directly related to the mechanism through which the treatment induces amnesia. As such, different treatments that target the same basic processes should be associated with similar time-windows of sensitivity. Using this rationale we have investigated the possibility that cooling induced blockade of long-term memory (LTM) stems from the disruption of protein synthesis. By varying the timing of post-training hypothermia we have determined the critical period during which cooling disrupts the consolidation of appetitive long-term memory in the pond snail Lymnaea. Post-training hypothermia was found to disrupt LTM only when applied immediately after conditioning, while delaying the treatment by 10 min left the 24 h memory trace intact. This brief (<10 min) window of sensitivity differs from the time-window we have previously described for the protein synthesis inhibitor anisomycin, which was effective during at least the first 30 min after conditioning [Fulton, D., Kemenes, I., Andrew, R. J., & Benjamin, P. R. (2005). A single time-window for protein synthesis-dependent long-term memory formation after one-trial appetitive conditioning. European Journal of Neuroscience, 21, 1347-1358]. We conclude that hypothermia and protein synthesis inhibition exhibit distinct time-windows of effectiveness in Lymnaea, a fact that is inconsistent with the hypothesis that cooling induced amnesia occurs through the direct disruption of macromolecular synthesis.     

Implicit awareness of ambiguity: a role in the development of obsessive-compulsive disorder

The cognitive-behavioral model of obsessive-compulsive disorder proposes that obsessional symptoms are the consequence of the manner in which intrusive cognitions are interpreted [e.g., Salkovskis, P. M. (1998). Cognitive-behavioral approach to understanding obsessional thinking. British Journal of Psychiatry, 173(35S), 53-63]. The present study suggests that this may be attributable to maladaptive implicit cognitive processing, a deficit that results in the explicit awareness of ambiguity in idiographic obsessive-compulsive disorder (OCD) stimuli. The present study examines decision-making responses of low and high OCD scorers in a non-clinical undergraduate sample. Via a computer console, participants were shown sentence statements for three levels of ambiguity. They were then presented with a propositional statement for which they had to indicate agreement or disagreement for sentences of varying ambiguity. After this, the participants indicated whether they were completely confident or unconfident as regards their previous agree-disagree decisions. Results indicate that the high compared to the low OCD scoring group had less agreement and subsequent less confidence in decisions made for sentences of varying ambiguity. Response latencies partially fitted the predicted hypotheses. Consequently, an addition to Salkovskis, Forester, and Richards' [1998. Cognitive-behavioral approach to understanding obsessional thinking. The British Journal of Psychiatry, 173(35S), 53-63] model of OCD is suggested: namely that an implicit ambiguity deficit mediates the likelihood of normally occurring intrusions developing into abnormal obsessions. Methodological limitations and future research are considered.     

Stability of cognitive vulnerabilities to depression: a short-term prospective multiwave study

The stability of 3 cognitive vulnerabilities--a negative cognitive style, dysfunctional attitudes, and rumination--as well as depressive symptoms as a benchmark were examined to investigate whether cognitive vulnerabilities are stable, enduring risks for depression. A sample of adolescents (6th-10th graders) completed measures of these 3 cognitive vulnerabilities and depressive symptoms every 5 weeks for 4 waves of data across 5 months. Mean-level and differential stability were examined for the sample overall and by age subgroups. A negative cognitive style exhibited mean-level stability, whereas rumination and dysfunctional attitudes showed some mean-level change. Absolute magnitudes of test-retest reliabilities were strong for depressive symptoms (mean r= .70), moderately high for a negative cognitive style (mean r= .52), and more modest for rumination (mean r= .28) and dysfunctional attitudes (mean r= .26). Structural equation modeling showed that primarily enduring processes, but not contextual forces, contributed to the patterning of these test-retest reliabilities over time for a negative cognitive style and dysfunctional attitudes, whereas both enduring and contextual dynamics appeared to underlie the stability for rumination. Theoretical and clinical implications of these findings are discussed.     

Psychological correlates of car use: A meta-analysis

This meta-analysis synthesised quantitative research into potentially modifiable psychological correlates of car use and intentions to drive. Online psychology and transportation databases were searched, and inclusion criteria applied to potentially relevant records. An ancestry approach was also employed to search selected publications. Meta-analyses of effect size rs were performed on 23 unique study datasets. Results generally supported the predictive utility of variables derived from the Theory of Planned Behaviour, though cognitions towards not driving displayed uniformly larger effects than were observed for car use cognitions. There was also a strong effect of habit on behaviour. Support for effects of pro-environment cognitions on driving was weak. However, a dearth of available evidence limited our findings and precludes development of clear evidence-based recommendations for intervention design. Directions for future research are discussed.     

Improving adaptive display with temporally adaptive rendering.

Making computer imagery more responsive and realistic is one of the most basic goals of graphics researchers, and adaptive display is one of the primary means for achieving it. While previous displays have achieved a spatial adaptivity, our research focuses on achieving temporal adaptivity--sampling some regions not only more densely, but also more often. We use closed loop feedback to guide sampling to image regions that change significantly over space or time. Adaptive reconstruction emphasizes older samples in static settings, resulting in sharper images; and new samples in dynamic settings, resulting in images that may be blurry but are up-to-date. In terms of peak signal-to-noise ratio, this prototype produces much better image streams than nonadaptive renderers with the same simulated sampling rates. This new display also offers new opportunities for adapting to user state, allowing adaptive response both where and when it is needed. Our prototype system already responds interactively to changes in the user's viewpoint, it might also respond to any of a number of other indications of user state, including eye tracking, repeatedly manipulated objects, and biometrics.     

Dishabituation produces interactions during multiple schedules

McSweeney and Weatherly (1998) argued that differential habituation to the reinforcer contributes to the behavioral interactions observed during multiple schedules. The present experiment confirmed that introducing dishabituators into one component of a multiple schedule increases response rate in the other, constant, component. During baseline, pigeons and rats responded on multiple variable interval 30-s variable interval 30-s schedules. During experimental conditions, subjects responded on the same schedule except that a dishabituating stimulus (manipulation of a light) was also presented randomly during one of the components. Constant-component responding was faster during the experimental than during the baseline conditions. This difference in responding grew larger across the session. The within-session pattern of responding was similar for the two components of each multiple schedule. Qualitatively similar results were observed for rats and pigeons. These results suggest that behavioral interactions sometimes arise from a change in reinforcer effectiveness between the baseline and experimental phases of the experiment, rather than from an assessment of reinforcer relativity (a comparison of reinforcers delivered during the two components in the experimental phase). Behavioral contrast and induction are sometimes produced by similar factors.