Effects of chronic administration with high doses of testosterone propionate on behavioral and physiological parameters in mice with differing basal aggressiveness

The effects of testosterone propionate, an anabolic‐androgenic steroid, on the behavior displayed during a social encounter by gonadally intact male mice were investigated. Animals were distributed into three groups according to their attack latency in a pre‐screening test (high‐, moderate‐, and low‐ attacking mice) and each group received weekly injections of 60 or 120 mg/kg of testosterone or sesame oil for 10 weeks. Behavioral tests were then carried out. Afterwards, organs were weighed and blood samples collected in order to obtain hormonal data. Treatment had a differential impact on attack in the three groups of animals. Only the high‐attacking testosterone‐treated mice showed lower total duration of attack than their controls. Those that received 60 mg/kg spent more time exhibiting exploratory behaviors. As an index of the anabolic activity of the drug, all testosterone‐treated mice had heavier kidneys and, as an index of the androgenic activity of testosterone propionate, they had heavier seminal vesicles, lighter testes, and showed higher testosterone levels in a dose‐dependent way than their controls. Hence, the effect of treatment on peripheral physiological parameters was similar in all three groups whereas behavioral effects differed depending on basal aggressiveness, considered a characteristic of coping style. Aggr. Behav. 29:173–189, 2003. © 2003 Wiley‐Liss, Inc.     

The Distillation of “VISCI”: Towards a Better Identification of Suicidal Inmates

The “Viennese Instrument for Suicidality in Correctional Institutions” (VISCI) presented here is based on the results of a large case‐control study and on research on literature examining suicide prevention in general and in the prison population in particular. The aim of this study was to validate the properties of the VISCI to differentiate between suicides and nonsuicides. The sensitivity and specificity of the VISCI was tested in the files of 55 correctional suicides, and 110 controls. VISCI differentiated well between suicides and nonsuicides. The routine administration of the VISCI may help to direct the existing professional attention to inmates with the highest need.     

Localization of a peripheral target during parametric adjustment of saccadic eye movements

The aim of the experiment was to find out whether saccadiceve movements have any effect on perceived visual directions. ihe method was to alter the parameters of the oculomotor system so that the eye movement made in response to a peripheral target was inappropriate to the retinal locus of its image. It was found that this procedure had no effect on the perceived location of the peripheral target; and it was concluded that a specific retinal locus is more or less rigidly associated with a corresponding visual direction, but not with a particular magnitude of ocular rotation.     

Is Age Just a Number? Cognitive Reserve as a Predictor of Divergent Thinking in Late Adulthood

The purpose of the study was to test a model of causal relationships among cognitive reserve (CR), personality variables such as Neuroticism and Openness to experience, and divergent thinking (DT), independently evaluating performance in different domains (verbal and graphic). It was hypothesized that CR, Openness, and Neuroticism would each directly influence verbal and graphic DT. A total of 135 subjects between 55 and 84 years old participated in the study and were interviewed in individual sessions. For a correct fit Neuroticism was eliminated from the measurement model. The goodness-of-fit indexes of the measurement model, the adequate composite reliability index and the discriminant validity supported the viability of the structural equation model (SEM). The goodness-of-fit indexes confirmed the existence of a significant effect of CR and Openness to experience in predicting both verbal and graphic DT. The three CR indicators had high loadings in their theoretical factor, with the observed variables study-work and WAIS vocabulary showing the highest loads. In summary, subjects with CR and Openness to experience were more flexible and original when solving verbal problems, and to a lesser degree, graphic problems.     

Assessing the Helpfulness of One Parenting Assistance Helpline

This study examined the services provided by one statewide warmline established to assist parents and caregivers of children from birth through adolescence. Warmlines offer telephone-based, non-crisis support for individuals experiencing diverse issues that include parenting questions and concerns. The University of Alabama Child Development Resources collaborated with the Alabama State Department of Child Abuse and Neglect Prevention to institute the Parenting Assistance Line to provide information and support to parents and caregivers of children, age birth through adolescence. Overall, the staff of the Parenting Assistance Line responded to 9487 calls during the 6 years of data reported here. Through a secondary data analysis of calls to the Parenting Assistance Line from June 2007 to July 2013, this study describes the concerns of callers in relation to the ages of the children about whom they are calling and also evaluates the perceptions of the helpfulness of the information and support provided by the warmline. We found that frequently calls involved parent support and parental stress for parents and caregivers of children from infancy through adolescence. The findings suggest that telephone assistance lines offer a viable choice for parents and caregivers seeking affordable and accessible resources when stressed by the responsibilities of caring for children and adolescents and/or seeking information related to parenting issues. The study identified the limitations of research involving secondary data collected for purposes other than research that program administrators and evaluators should consider when planning and implementing services of this nature.     

Differences in false recollection according to the cognitive reserve of healthy older people

We present an associative recognition experiment comparing three samples of healthy people (young people, older people with high cognitive reserve [HCR], and older people with low cognitive reserve [LCR], with each sample consisting of 40 people), manipulating stimuli repetition during the study phase. The results show significant differences among the three samples in their overall performance. However, these differences are not due to a different use of familiarity, but rather due to a different way of using recollection: although there are no differences in the hit rates between the HRC and LRC samples, the LCR group makes significantly more recollective false alarms than the HCR group. Moreover, repetition provokes an increase in the recollective false alarms in the LCR group, but this does not occur in the group of young people or in the HCR group. These findings are explained in terms of recollection-based monitoring errors and seem to provide support for the cognitive reserve hypothesis.