Lateralization of auditory rhythm length in temporal lobe lesions

In the visual modality, short rhythmic stimuli have been proven to be better processed (sequentially) by the left hemisphere, while longer rhythms appear to be better (holistically) processed by the right hemisphere. This study was set up to see if the same holds in the auditory modality. The rhythm task as originally designed by Seashore was computerized and is part of the Fepsy Neuropsychological battery. This task was performed by 85 patients with intractable temporal lobe epilepsy (left TLE = 32; right TLE = 53) enrolled in the Dutch Collaborative Epilepsy Surgery Program. They performed the task before and 6 months after surgery. The task consists of 30 pairs of rhythmic patterns in 3 series of 10 items. The series contains patterns of 5, 6, or 7 notes. The purpose is to indicate whether the two patterns are the same or different. Reaction times are also measured. If the hypothesis is true, the short-item sequence will be better processed by patients with right temporal lobe epilepsy (nonimpaired left temporal lobe), the longer sequence will be better processed by the left temporal epilepsy group (nonimpaired right temporal lobe). No overall laterality effect on rhythm perception could be found and no difference was found between both test moments. IQ did not correlate with rhythm performance. However, there was an interaction effect of laterality and rhythm length on performance and reaction time. This effect can be explained by the increase after the operation of the score of the left focus group and a decrease in the right focus group on the longer rhythms. This effect was somewhat less strong in the reaction times: a clear tendency for faster reaction times after surgery in the left and longer reaction times in the right focus group. The effect could not be explained for by the difference in extent of resection in either temporal lobe. This study showed that memory for and discrimination of auditory rhythm is dependent on which hemisphere is used in processing. The effect could be demonstrated for the right hemisphere, which uses a holistic processing of stimuli, which outperforms the left in rhythms consisting of a long sequence. In left temporal resections an improvement occurs on the longer rhythms and in right temporal resections the performance on the longest rhythms decreases.     

Age differences in recollection: three patterns of enhanced encoding

Memory encoding conditions can be manipulated in a variety of ways, and many of these methods result in improved recollection for both younger and older adults relative to baseline conditions. Previous results have shown differential age-related patterns of improvement, however, with some manipulations giving equal improvement to young and old participants, some benefiting older adults more, and others benefiting younger adults more. In 2 experiments, the authors show that presenting pictures with words benefited older more than younger participants, word generation benefited both groups equally, and an encoding condition requiring novel integrative processing benefited younger more than older adults. The authors discuss these results in terms of the enhanced elaboration afforded and processing demanded by differential combinations of age groups and encoding conditions.     

Order Matters! Influences of Linear Order on Linguistic Category Learning

Linguistic category learning has been shown to be highly sensitive to linear order, and depending on the task, differentially sensitive to the information provided by preceding category markers (premarkers, e.g., gendered articles) or succeeding category markers (postmarkers, e.g., gendered suffixes). Given that numerous systems for marking grammatical categories exist in natural languages, it follows that a better understanding of these findings can shed light on the factors underlying this diversity. In two discriminative learning simulations and an artificial language learning experiment, we identify two factors that modulate linear order effects in linguistic category learning: category structure and the level of abstraction in a category hierarchy. Regarding category structure, we find that postmarking brings an advantage for learning category diagnostic stimulus dimensions, an effect not present when categories are non-confusable. Regarding levels of abstraction, we find that premarking of super-ordinate categories (e.g., noun class) facilitates learning of subordinate categories (e.g., nouns). We present detailed simulations using a plausible candidate mechanism for the observed effects, along with a comprehensive analysis of linear order effects within an expectation-based account of learning. Our findings indicate that linguistic category learning is differentially guided by pre- and postmarking, and that the influence of each is modulated by the specific characteristics of a given category system.     

The use of scores anchored at the scale midpoint in reporting individuals' traits

Standardized scores including factor scores are insufficient indicators of individuals' positions on personality traits when mean scores deviate considerably from the scale origin. Anchored scores, that is, raw scores expressed as deviations from the scale midpoint and divided by the standard deviation, retain this discrepancy. We argue in favour of reporting in terms of anchored scores in addition to standard scores, and present a solution to the specific problem of finding anchored factor (i.e., principal-component) scores. Such scores are obtained through dividing factor weights by the standard deviation of the variable in question, and applying the corrected weights to the matrix of raw scores, expressed as deviations from the scale midpoint (e.g. −2, −1, 0, +1, +2). © 1998 John Wiley & Sons, Ltd.     

When do trauma experts choose exposure therapy for PTSD patients? A controlled study of therapist and patient factors

To investigate when and why therapists opt for or rule out imaginal exposure (IE) for patients with posttraumatic stress disorder (PTSD), 255 trauma experts were randomized to two conditions in which they were presented with four cases in which the patients' comorbidity and treatment preferences were manipulated. The results confirmed IE to be an underutilized approach, with the majority of professionals being undertrained in the technique. As predicted, the patient factors influenced the expert's choice of therapy: in case of a comorbid depression, IE was significantly less preferred than medication. Also, IE was significantly more likely to be offered when patients expressed a preference for trauma-focused treatment. The therapist factors were also found to be importantly related to treatment preferences, with high credibility in the technique being positively related to the therapists' preference for IE. Perceived barriers to IE, such as a fear of symptom exacerbation and dropout, were negatively related to the perceived suitability of the treatment when patients had suffered multiple traumas in childhood. The results are discussed in the light of clinical implications and the need of exposure training for trauma professionals.     

Military Ethical Decision Making: The Effects of Option Choice and Perspective Taking on Moral Decision-Making Processes and Intentions

We investigated the ethical decision-making processes and intentions of 151 military personnel responding to 1 of 2 ethical scenarios drawn from the deployment experiences of military commanders. For each scenario, option choice and perspective affected decision-making processes. Differences were also found between the 2 scenarios. Results add to the emerging literature concerning operational ethical conflicts and highlight the complexity and challenge that often accompanies operational ethics.     

Sweet Delight and Endless Night: A Qualitative Exploration of Ordinary and Extraordinary Religious and Spiritual Experiences in Bipolar Disorder

The authenticity of religious and spiritual experiences during mania is an important subject for bipolar patients. The exploration of such experience in bipolar disorder is the central point of this qualitative study. A psychiatrist and a hospital chaplain conducted 35 semi-structured interviews with recovered participants, recruited from mental health care institutions in the Netherlands, the patients’ association and via the internet, about their religious and spiritual experiences during illness episodes and in stable times. A variety in types (such as divine presence, unity, mission, meaningful synchronicity) during mania was reported, which were on a sliding scale with experiences/views in stable times in more than half of the interviews. During depression, absence of religious or spiritual experience was predominant. The reported experiences were viewed by most participants as both authentically religious or spiritual but also related to the disorder, requiring therefore language that transcended medical terminology. Also indicated is the relevance of the results for fundamental discussions about the nature or religious experience.     

The Interaction Between Pubertal Timing and Peer Popularity for Boys and Girls: An Integration of Biological and Interpersonal Perspectives on Adolescent Depression

The transition to adolescence marks a time of sharply increased vulnerability to the development of depression, particularly among girls. Past research has examined isolated risk factors from individual theoretical models (e.g., biological, interpersonal, and cognitive) of depression, but few have examined integrative models. This study investigated the conjoint effects of early pubertal timing and popularity in the longitudinal prediction of depressive symptoms. A total of 319 girls and 294 boys (ages 11–14) provided information on their pubertal status, depressive symptoms, and the social status (i.e., popularity) of their peers. Adolescents completed a second measure of depressive symptoms 11 months after the initial time point. Findings supported an integrated biological-interpersonal model in explaining the development of depressive symptoms during adolescence. Early pubertal development was associated with increase in depressive symptoms only when accompanied by low levels of popularity. High levels of popularity buffered the association between early pubertal development and later depressive symptoms. Unexpectedly, these results were significant both for girls and boys. Results are discussed in terms of dynamic systems theories.     

Dimensions of Religion Associated with Suicide Attempt and Suicide Ideation in Depressed,Religiously Affiliated Patients

There is substantial evidence to support the claim that religion can protect against suicide ideation, suicide attempts, and completed suicide. There is also evidence that religion does not always protect against suicidality. More insight is needed into the relationship between suicidal parameters and dimensions of religion. A total of 155 in‐ and outpatients with major depression from a Christian Mental Health Care institution were included. The following religious factors were assessed: religious service attendance, frequency of prayer, religious salience, type of God representation, and moral objections to suicide (MOS). Multiple regression analyses were computed. MOS have a unique and prominent (negative) association with suicide ideation and the lifetime history of suicide attempts, even after controlling for demographic features and severity of depression. The type of God representation is an independent statistical predictor of the severity of suicide ideation. A positive‐supportive God representation is negatively correlated with suicide ideation. A passive‐distressing God representation has a positive correlation with suicide ideation. High MOS and a positive‐supportive God representation in Christian patients with depression are negatively correlated with suicide ideation. Both are likely to be important markers for assessment and further development of therapeutic strategies.     

Modeling Rule-Based Item Generation

An application of a hierarchical IRT model for items in families generated through the application of different combinations of design rules is discussed. Within the families, the items are assumed to differ only in surface features. The parameters of the model are estimated in a Bayesian framework, using a data-augmented Gibbs sampler. An obvious application of the model is computerized algorithmic item generation. Such algorithms have the potential to increase the cost-effectiveness of item generation as well as the flexibility of item administration. The model is applied to data from a non-verbal intelligence test created using design rules. In addition, results from a simulation study conducted to evaluate parameter recovery are presented.