Effects of neonatal treatment with cyproterone acetate on aggressive behavior induced by footshock in adult male rats

High levels of androgens are required to organize aggressive behavior in adult male rats. Footshock-induced aggression was tested in Wistar rats allocated to one of three experimental groups: control (oil-injected) males (M), males neonatally injected with the antiandrogen cyproterone acetate (CA), and males treated as in the CA group but gonadectomized just before puberty (CAG). An antiaggressive effect of CA in those adult male rats neonatally treated with this compound was found. Neonatal exposure to cyproterone acetate exerts an antiandrogenic effect over the expression of shock-induced aggressive behavior. The behavioral effects of CA were not countered by adult treatment with testosterone propionate.     

Community-based Peer Groups: an Intervention Programme for Teenage Mothers

This paper assesses the use of community-based peer groups as an intervention strategy to provide teenage mothers with an opportunity to share common experiences, receive social support and identify links between personal and social problems. The method utilized in a recent community project on teenage pregnancy is outlined. Over a period of 8 weeks a group of 10 teenage mothers met weekly to share their experiences of pregnancy and motherhood. The facilitators used various games and audio-visual aids to build rapport and to enhance willingness to discuss sensitive topics. The final session comprised a 1-day training workshop to enable the participants to act as co-facilitators for similar groups in the future. The evaluation indicated that the participants felt empowered by the opportunity to discuss common experiences and to have their perceptions affirmed by their peers. The potential value of this programme within the broader mental health context of South Africa is briefly discussed, and also the possibility of adding a consciousness-raising element to such groups.     

Simulating individual word identification thresholds and errors in the fragmentation task

This article presents a large-scale study that collected word identification thresholds and errors in the fragmentation task for all four-letter French words. In the first part of this article, we identify some of the variables (e.g., word frequency, neighborhood size, letter confusability) that affect performance in the fragmentation task. In the second part, we analyze individual response performance and identify different response strategies. We demonstrate that the interactive activation model can account for individual response strategies by adapting two of its original parameters: word-letter feedback and letter-word inhibition. In the third part, we demonstrate that the adaptation of the interactive activation model to the fragmentation task makes it possible to successfully simulate a facilitatory frequency effect on identification thresholds, an inhibitory neighborhood size effect on error rates, and an inhibitory letter confusability effect on identification thresholds. When the task-specific processes of the fragmentation task are specified and individual response strategies are considered, the interactive activation model provides a parsimonious architecture for modeling the task-independent processes involved in word perception.     

A survey of Rorschach teaching in APA-approved clinical graduate programs.

A questionnaire on teaching of the Rorschach technique was sent to all APA-approved graduate clinical psychology programs in the United States and Canada. The questionnaire asked for the degree of emphasis placed on the Rorschach in the primary assessment course, the Rorschach teaching experience of the respondent and the respondent's evaluation of the technique as a clinical tool, a teaching aid and a research instrument. The respondent in each case was the faculty member teaching the major diagnostic assessment course. There was a 100% return of the questionnaires. The major results show that (1) 81% of the programs place major emphasis on the Rorschach Technique in the assessment course; (2) only 24% of the programs offer the course for a full year; (3) respondents with more than 10 years teaching experience rated the Rorschach higher than respondents with less experience, and (4) respondents as a group rated the Rorschach highly as a clinical tool and teaching aid, but gave it generally low ratings as a research instrument.     

Effects of contextual interference, task difficulty, and levels of processing on pursuit tracking

Based on an activity questionnaire, 48 females without experience in open sports skills were selected to track a moving light beam through either a circle, square, or triangular target area on a pursuit rotor. Contextual interference was created by presenting 5 velocities in either a random or a blocked context during acquisition. Level of processing was manipulated by having half of all subjects classify acquisition velocities by a predetermined numerical code. Time-on-target (TOT) was measured after each acquisition, retention, and transfer trial. Subjects tracking the circle produced higher TOTs than those who tracked the square or triangle (which did not differ from one another) across all three phases of the experiment; blocked and random acquisition groups were not significantly different from one another in acquisition, retention, or transfer. Subjects who classified acquisition velocities and tracked the circle under the blocked acquisition context produced significantly higher retention scores than those who tracked the circle but did not classify acquisition velocities. Transfer was facilitated for subjects who tracked the triangle in a random transfer context and classified velocities during acquisition. Results were discussed as providing support for the manipulation of the level of cognitive processing during the initial stage of learning. In addition, manipulating task difficulty was discussed.     

On a hitherto unexploited extension of the finitary standpoint

P. Bernays has pointed out that, in order to prove the consistency of classical number theory, it is necessary to extend Hilbert's finitary standpoint by admitting certain abstract concepts in addition to the combinatorial concepts referring to symbols. The abstract concepts that so far have been used for this purpose are those of the constructive theory of ordinals and those of intuitionistic logic. It is shown that the concept of a computable function of finite simple type over the integers can be used instead, where no other procedures of constructing such functions are necessary except simple recursion by an integral variable and substitution of functions in each other (starting with trivial functions).     

The child's conceptions about means of production and their owners

Investigated the child's social ideas, namely notions about production means (factory, public transportation, farmland) and family influence on notion acquisition. 120 children of jive age groups (4 to 13 years) were clinically interviewed (sensu Piaget). Children's parents, workers and housewives of an Italian industrial centre, answered to questionnaires inquiring background information on parents and child and appraisal of child's level of understanding. Interview answers were classified on ten level sequences concerning father's job, home ownership, function and ownership of production means and produce. Correlational analyses and separate ANOVAs [5(age) × 2(sex) × 3(production mean)] in three subject areas (owner of production mean, of produce, and produce use) of interview answers reveal that children's ideas about different production means develop with differing rhythms through the same level sequences, which are clearly related to the general characterstics of intelligence described by Piaget. Questionnaires show that parents tend to furnish their children with the degree of information concerning jobs appropriate to the level of development at which the parents believe their children to be.     

Temporal factors in pattern vision

A sequence of uncorrelated randomly patterned visual stimuli (“visual noise”) is normally seen as a field of particles in “Brownian motion.” When each frame of the sequence is followed by a blank flash superimposed on the same region of the visual field, the apparent structure of the noise field is strikingly altered, its form varying with the time interval between frame and flash. At a critical interval, many dots seem to cohere, to form maggot-like objects.

Some of the factors determining this critical interval have been studied. They include the brightness, repetition frequency and exposure duration of the noise field, and the distance of its retinal image from the fovea.

The critical interval for “perceptual blanking” is quite different from that for the “maggot effect,” but the two show a suggestively similar dependence upon the duty cycle of the noise display.

It is of some neurological interest that the phenomenon is not appreciably visible with dichoptic mixing of noise and blank stimuli.     

Fighting inequalities in times of pandemic: The role of politicized identities and interdependent self-construal in coping with economic threat

During the COVID-19 pandemic, institutions encouraged social isolation and non-interaction with other people to prevent contagion. Still, the response to an impending economic crisis must be through the collective organization. In this set of pre-registered studies, we analyse two possible mechanisms of coping with collective economic threats: shared social identity and interdependent self-construction. We conducted three correlational studies during the pandemic in May–October 2020 (Study 1, N = 363; Study 2, N = 250; Study 3, N = 416). Results show that shared identity at two levels of politicization (i.e., working-class and 99% identities) and interdependent self-construal mediated the relationship between collective economic threat, intolerance towards economic inequality and collective actions to reduce it. The results highlight that the collective economic threat can reinforce the sense of community—either through the activation of a politicized collective identity, such as the working class or the 99% or through the activation of an interdependent self—which in turn can trigger greater involvement in the fight against economic inequality. Please refer to the Supplementary Material section to find this article's Community and Social Impact Statement .     

A Journey into Grief

The experience of the death of her Grandmother immerses the author in an intimate experience of grief. She reflects on her journey into grief and presents insights into grief's impact on her personal story as well as her professional life, i.e., her clinical work as a young psychoanalyst-in-training. Other metaphors and dream images, such as life, death, home, homelessness, silence, speech, story, voicelessness, aloneness and loneliness echo throughout the reflection as the author attempts to articulate an understanding of the profound Self-change birthed by death, grief and loss.