Multimodal assessment of rehearsal treatments in an assertion training program.

50 nonassertive undergraduate Ss participated in a study designed to assess the efficacy of several behavior rehearsal procedures in an assertion training program. In addition, 15 highly assertive undergraduates also participated in the pretest assessment, which included behavioral, cognitive, and physiological measures. Following pretest, the nonassertive Ss were randomly assigned to a no-treatment control group or to groups that received 2 sessions of behavior rehearsal, exaggerated rehearsal, role-reversal training, or a treatment consisting of a combination of behavior rehearsal, modeling, and coaching. Pretest results indicate that the nonassertive Ss were rated as responding less assertively in the behavioral role play test and also reported themselves as being more anxious than the assertive Ss. Posttest data indicate that the role-reversal group was the least effective treatment in modifying self-reports of assertion behavior, while the exaggerated-rehearsal and full-treatment groups demonstrated the largest gains on several measures. (15 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Retrieving for rehearsal: An analysis of active rehearsal in children's memory.

Two experiments with 96 2nd graders and 24 6th graders explored the operation of retrieval processes in Ss' active rehearsal strategies. Both experiments used free-recall tasks, in which Ss were given instructions in active rehearsal as well as supports that might facilitate the retrieval operation and thus enhance both rehearsal and recall performance. In Exp I, 2nd and 6th graders were given visual or auditory access to an 18-item stimulus-word list. Results show that, by providing 2nd graders with an opportunity to view previously presented words, rehearsal activity and recall increased substantially, whereas the performance of the 6th graders was not affected. In Exp II, presentation time and visual access to a similar 18-word list were manipulated for 2nd graders. Results show that the provision of extra time for an item enabled Ss to execute a more active rehearsal strategy. Extra time had only minimal effects on recall, except when it was combined with visual access to the items. Findings suggest that retrieval per se is not necessary for the beneficial effects of active rehearsal, if other procedures can be followed to permit the juxtaposition of several items in rehearsal. (15 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Children's verbal rehearsal in a free-recall task.

Predicted that, while the use of categories in rehearsal would increase with age, organized rehearsal would be related to recall accuracy and recall organization for all ages tested. Data from 20 3rd and 20 6th graders confirm the predictions but are inconclusive for 20 kindergartners. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Justice needs a new blindfold: A review of mock jury research.

Reviews studies on factors that may influence jurors' verdicts. These factors include characteristics of the victim and defendant, judges' instructions regarding pretrial publicity and inadmissible evidence, number and severity of decision alternatives, jurors' conception of guilt, and size of the jury and its decision rule. Data have indicated that many extra-evidential factors contribute to mock jurors' verdicts. The applicability of these results is limited, however, by the many methodological and sampling problems inherent in the studies. It is suggested that efforts to develop methods of minimizing biases would be most successful if undertaken conjointly by legal experts and social scientists. (73 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Behavior rehearsal and social competence: A pilot study.

Investigated the effects on socially incompetent college students of a group program that used social-learning theory and behavior-rehearsal techniques. 20 students referred from a university mental health clinic were assigned to 1 of 2 treatment groups (Groups 1 and 2) or a control group (Group 3). Groups 1 and 2 participated in 8, 2-hr sessions involving behavior-rehearsal and modeling procedures, whereas Group 3 was given readings on social skills and assertiveness training. All groups were given pretests, posttests, and follow-up tests on Forms A and B of the 16 PF. Data were analyzed with a repeated measures analysis of variance. Significant gains in social competence were shown by Groups 1 and 2 on the posttest and the follow-up test. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Role of early presemantic phonological code in Chinese character identification.

A backward-masking procedure was used to examine phonological processing in Chinese character identification. In Experiment 1, the character target and mask were presented for 50 ms and 30 ms, respectively. The results indicated graphic but not phonological nor semantic masks affected target recognition. In Experiment 2, the exposure durations of the target and mask were extended to 60 ms and 40 ms, respectively. We observed a significant phonological mask facilitation effect for high-frequency targets and the absence of semantic mask effect. A postexperiment analysis showed that when the high-frequency targets had well-defined meaning, the semantic masks facilitated target identification, whereas when the high-frequency targets had fuzzy meaning, no significant semantic mask effect was obtained. Results indicate that getting at the phonology of high-frequency characters with fuzzy meaning occurs presemantically. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Instructions, modeling, and rehearsal: Implications for training.

Studied the effects of instructions, modeling, and rehearsal in training 48 college students in empathic communication. Ss were assigned to 1 of 8 groups representing all possible factorial combinations of the variables which included instructions vs no instructions, modeling vs no modeling, and rehearsal vs no rehearsal. Training gains were assessed using written responses to the pre- and posttest administration of the Carkhuff Communication Index. Generalization effects were assessed using empathy ratings of a critical-incident interview. Analysis of written responses indicated that improvement in empathic communication occurred for all training groups. Specific instructions appeared to be a criticial factor in facilitating written performance. The interviews showed that a combination of training variables facilitated empathic responses during an interview more than each variable alone. Modeling seemed to be an effective procedure for the interview task. The instructional effect did not generalize very well. (31 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Changes of intraaortic balloon volume during pumping in a mock circulation system

The effects of hemodynamic changes on intraaortic balloon (IAB) volumes were studied experimentally using a helium tachometer in a mock circulatory system. The IAB volume decreased with increases in the heart rate and mean aortic pressure, but the degree of reduction in the IAB volume was different among 4 commercially available IAB drivers. Improvements in IAB consoles are needed to compliment the progress made in percutaneous techniques for IAB insertion resulting in smaller balloons.     

Verbal rehearsal and memory in children with closed head injury: a quantitative and qualitative analysis

Nine closed head injured (CRI) children (mean age = 11.4 years) with post-onset intervals of seven months to eight years were studied. The CRI children ranged from mild-moderate to severely impaired. Nine normally developing children (mean age = 10.9 years) served as controls. An overt rehearsal free recall task was used. Subjects were instructed to "think aloud" following presentation of each item to-be-recalled. Quantitative analyses suggested impaired verbal recall and inefficient, passive rehearsal strategy use in severely injured subjects. Mild-moderate subjects performed similarly to controls and exhibited active rehearsal strategy use. Qualitative analysis revealed differences between CRI subjects and controls' range of rehearsal strategies, monitoring and metamemory. Implications for clinical assessment and intervention with respect to use of rehearsal strategies are discussed.     

Social skills training: Behavior rehearsal in groups and dating skills.

Minimal dating, identified as a significant target problem, generally has been thought to result from either conditioned anxiety or negative self-evaluations. In the present study, minimal dating was formulated as the result of a social skills deficit. In accord with this formulation, 2 direct skill-training programs involving behavior rehearsal with and without extrasession tasks were evaluated against attention-placebo and waiting-list controls. 48 college males reporting anxiety and shyness about meeting females were carefully screened and assigned to 1 of 2 groups included in each of 4 treatment conditions. Results indicate that 3 of the 4 skill-training groups showed significant (p     

Asymmetric influence in mock jury deliberation: Jurors' bias for leniency.

Investigators have frequently noted a leniency bias in mock jury research, in which deliberation appears to induce greater leniency in criminal mock jurors. One manifestation of this bias, the asymmetry effect, suggests that proacquittal factions are more influential than proconviction factions of comparable size. A meta-analysis indicated that these asymmetry effects are reliable across a variety of experimental contexts. Exp I examined the possibility that the leniency bias is restricted to the typical college-student subject population. The decisions of college-student and community mock jurors in groups beginning deliberation with equal faction sizes (viz., 2:2) were compared. The magnitude of the asymmetry effect did not differ between the two populations. In Exp II, Ss received either reasonable-doubt or preponderance-of-evidence instructions. After providing initial verdict preferences, some Ss deliberated in groups composed with an initial 2:2 split, whereas other Ss privately generated arguments for each verdict option. A significant asymmetry was found for groups in the reasonable-doubt condition, but group verdicts were symmetrical under the preponderance-of-evidence instructions. Shifts toward leniency in individual verdict preferences occurred for group members, but not for subjects who performed the argument-generation task. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Adding a vocabulary component to incremental rehearsal to enhance retention and generalization.

The current study investigates the effect of adding a semantic component, in the form of vocabulary, to the incremental rehearsal (IR) procedure. Sixty-one second- and third-grade students in a suburban elementary school were randomly assigned to one of two conditions: IR or IR with vocabulary. Each participant was taught seven previously unknown words; participants were also taught the word's definition within the vocabulary condition. Retention and generalization were assessed one week later. Participants in the vocabulary condition retained and generalized significantly more words than participants in the IR only condition. Future studies should investigate effect of vocabulary integration in other reading interventions as well as the effect of vocabulary integration on reading fluency and passage comprehension. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

POPSIM: a general population simulation program

MOTIVATION: The investigation of common disorders of polygenic inheritance using both population-based association designs and non-parametric linkage analysis within families is gaining increasing importance. We have created a program that allows for the flexible simulation of populations as a tool to investigate the properties of population-based mapping approaches. RESULTS: We have created a population simulation program, POPSIM, that (i) creates a virtual representation of every individual, (ii) makes no prior assumptions but the Mendelian rules and (iii) allows populations of several million individuals in size to be generated and to be followed over hundreds of generations. The parameters of the disease model, population structure and population expansion rate can be specified. Flexible sampling options exist that allow samples of families and individuals to be drawn at any given point during the population history. The program may be a useful tool in the study of the influence of genetic drift, recombination and admixture on the generation and maintenance of linkage disequilibrium in populations, as well as the evaluation of stochastic sampling characteristics of families and individuals conditional on a complex genetic phenotype from homogeneous and heterogeneous populations. AVAILABILITY: The source code as well as Sun and Windows NT4.0 console executables of the program are available under http://www.ukrv. de/ch/medgen/html/benutzer/j.hampe/popsim. html. CONTACT: J. Hampe@mucosa.de     

SPROUT: a program for structure generation

SPROUT is a new computer program for constrained structure generation that is designed to generate molecules for a range of applications in molecular recognition. It uses artificial intelligence techniques to moderate the combinatorial explosion that is inherent in structure generation. The program is presented here for the design of enzyme inhibitors. Structure generation is divided into two phases: (i) primary structure generation to produce molecular graphs to fit the steric constraints; and (ii) secondary structure generation which is the process of introducing appropriate functionality to the graphs to produce molecules that satisfy the secondary constraints, e.g., electrostatics and hydrophobicity. Primary structure generation has been tested on two enzyme receptor sites; the p-amidino-phenyl-pyruvate binding site of trypsin and the acetyl pepstatin binding site of HIV-1 protease. The program successfully generates structures that resemble known substrates and, more importantly, the predictive power of the program has been demonstrated by its ability to suggest novel structures.     

Deciphering a neural code for vision

Deciphering the information that eyes, ears, and other sensory organs transmit to the brain is important for understanding the neural basis of behavior. Recordings from single sensory nerve cells have yielded useful insights, but single neurons generally do not mediate behavior; networks of neurons do. Monitoring the activity of all cells in a neural network of a behaving animal, however, is not yet possible. Taking an alternative approach, we used a realistic cell-based model to compute the ensemble of neural activity generated by one sensory organ, the lateral eye of the horseshoe crab, Limulus polyphemus. We studied how the neural network of this eye encodes natural scenes by presenting to the model movies recorded with a video camera mounted above the eye of an animal that was exploring its underwater habitat. Model predictions were confirmed by simultaneously recording responses from single optic nerve fibers of the same animal. We report here that the eye transmits to the brain robust "neural images" of objects having the size, contrast, and motion of potential mates. The neural code for such objects is not found in ambiguous messages of individual optic nerve fibers but rather in patterns of coherent activity that extend over small ensembles of nerve fibers and are bound together by stimulus motion. Integrative properties of neurons in the first synaptic layer of the brain appear well suited to detecting the patterns of coherent activity. Neural coding by this relatively simple eye helps explain how horseshoe crabs find mates and may lead to a better understanding of how more complex sensory organs process information.     

Imagery rehearsal therapy: An emerging treatment for posttraumatic nightmares in veterans.

Nightmares are a common complaint among service members exposed to traumatic events, but prevailing paradigms are disposed to a view that nightmares are a secondary phenomenon untreatable with direct therapeutic intervention. Imagery rehearsal therapy is a cognitive-imagery approach with proven efficacy in the treatment of nightmares in civilian trauma victims. Imagery rehearsal therapy not only has potential to reduce nightmare intensity and frequency, but controlled studies show clinically meaningful decreases in all clusters of posttraumatic stress disorder symptoms as well as insomnia. Limited data support its use with combat veterans. Directions for future research with combat veterans are recommended. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Adaptation of imagery rehearsal therapy for nightmares in children: A brief report.

This study investigated the effectiveness of a psychotherapeutic treatment for nightmares that was adapted for 6- to 11-year-old children from imagery rehearsal therapy. Ten child–mother dyads took part in a 3-session, 8-week treatment protocol. Participation in the study (contact with clinician, keeping a prospective dream log) was associated with decreases unpleasant dreams frequency, nightmare distress, and manifest anxiety. Providing educational information about nightmares did contribute to this positive effect. Results also suggest that drawing modified versions of nightmares for 1 month was associated with further reductions in nightmare distress and anxiety, but with no changes in unpleasant dreams frequency. Follow-ups at 3 and 6 months posttreatment suggest that the intervention had maintained effects. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Have code: Will travel.

Discusses the Code of Ethics of the Psychological Society of Ireland (1991) and possible changes to it. The author states that the Board of Professional Conduct is examining the Canadian Code of Ethics for Psychologists. Although the author is not certain how closely the Psychological Society of Ireland will follow the Canadian Code of Ethics for Psychologists, the Canadian code of Ethics is considered a landmark that shapes understanding of ethical issues in Ireland. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Toward a song code: evidence for a syllabic representation in the canary brain

The occurrence of clathrin-coated buds on immature granules (IGs) of the regulated secretory pathway suggests that specific transmembrane proteins are sorted into these buds through interaction with cytosolic adaptor proteins. By quantitative immunoelectron microscopy of rat endocrine pancreatic beta cells and exocrine parotid and pancreatic cells, we show for the first time that the mannose 6-phosphate receptors (MPRs) for lysosomal enzyme sorting colocalize with the AP-1 adaptor in clathrin-coated buds on IGs. Furthermore, the concentrations of both MPR and AP-1 decline by approximately 90% as the granules mature. Concomitantly, in exocrine secretory cells lysosomal proenzymes enter and then are sorted out of IGs, just as was previously observed in beta cells (Kuliawat, R., J. Klumperman, T. Ludwig, and P. Arvan. 1997. J. Cell Biol. 137:595-608). The exit of MPRs in AP-1/clathrin-coated buds is selective, indicated by the fact that the membrane protein phogrin is not removed from maturing granules. We have also made the first observation of a soluble N-ethylmaleimide-sensitive factor attachment protein receptor, syntaxin 6, which has been implicated in clathrin-coated vesicle trafficking from the TGN to endosomes (Bock, J.B., J. Klumperman, S. Davanger, and R.H. Scheller. 1997. Mol. Biol. Cell. 8:1261-1271) that enters and then exits the regulated secretory pathway during granule maturation. Thus, we hypothesize that during secretory granule maturation, MPR-ligand complexes and syntaxin 6 are removed from IGs by AP-1/clathrin-coated vesicles, and then delivered to endosomes.