Topological representations of Post algebras of order ω+ and open theories based on ω+-valued Post logic

Post algebras of order ⁺ as a semantic foundation for ⁺-valued predicate calculi were examined in [5]. In this paper Post spaces of order ⁺ being a modification of Post spaces of order n2 (cf. Traczyk [8], Dwinger [1], Rasiowa [6]) are introduced and Post fields of order ⁺ are defined. A representation theorem for Post algebras of order ⁺ as Post fields of sets is proved. Moreover necessary and sufficient conditions for the existence of representations preserving a given set of infinite joins and infinite meets are established and applied to Lindenbaum-Tarski algebras of elementary theories based on ⁺-valued predicate calculi in order to obtain a topological characterization of open theories.     

Androgyny,depression, and self-esteem in irish homosexual and heterosexual males and females

An examination was made of the following research questions: (a) Do Irish homosexuals and heterosexuals differ in the frequency of their classification in sex-role categories? (b) Is sexual orientation related to psychological adjustment? (c) Is androgyny related to psychological adjustment? Subjects were 112 Irish men and women who were administered Bem's Sex-Role Inventory, Rosenberg's Self-Esteem Scale, Zung's Self-Rating Depression Scale, and a questionnaire. Results indicated that Irish homosexuals were classified more frequently than Irish heterosexuals as androgynous. Homosexuals did not differ from heterosexuals in self-esteem or depression scores. Among these Irish subjects, psychological sex-role category is a more powerful influence on psychological health than actual sexual orientation. It is not whether you are homosexual or heterosexual that affects your psychological health, but how you perceive your own psychological masculinity and femininity.     

Plain Semi-Post algebras as a poset-based generalization of post algebras and their representability

Semi-Post algebras of any type T being a poset have been introduced and investigated in [CR87a], [CR87b]. Plain Semi-Post algebras are in this paper singled out among semi-Post algebras because of their simplicity, greatest similarity with Post algebras as well as their importance in logics for approximation reasoning ([Ra87a], [Ra87b], [RaEp87]). They are pseudo-Boolean algebras generated in a sense by corresponding Boolean algebras and a poset T. Every element has a unique descending representation by means of elements in a corresponding Boolean algebra and primitive Post constants which form a poset T. An axiomatization and another characterization, subalgebras, homomorphisms, congruences determined by special filters and a representability theory of these algebras, connected with that for Boolean algebras, are the subject of this paper.To the memory of Jerzy SupeckiResearch reported here has been supported by Polish Government Grant CPBP 01.01     

Visuo-spatial working memory span: a sensitive measure of cognitive deficits in children with ADHD.

Working memory (WM) has been hypothesised to be impaired in attention-deficit/hyperactivity disorder (ADHD). However, there are few studies reported on tests measuring visuo-spatial WM (VSWM) in ADHD. Some of these studies used paradigms including episodic memory, others only used low memory loads. In the present study we used a VSWM test that has not been used previously in ADHD research. The sensitivity of the VSWM test and a choice reaction time (CRT) test was evaluated in a pilot study by comparing them to two commonly used tests in ADHD-research; the Continuous Performance Test (CPT) and a Go/no-go test, in children with and without ADHD. The groups differed significantly in performance on the VSWM test (P < .01) and CRT (P < .05) but not on the CPT (P > .1) or on the Go/no-go test (P > .1). The results from the VSWM and CRT tests were replicated in a larger sample of participants (80 boys; 27 boys with ADHD and 53 controls, mean age 11.4 years). The difference between the groups was significant for both the VSWM test (P < .01) and the CRT test (P < .01). The effect size (ES) of the VSWM test was 1.34. There was a significant age-by-group interaction on the VSWM test, with larger group differences for the older children (P < .01). Our results show that the VSWM test is a sensitive measure of cognitive deficits in ADHD and it supports the hypothesis that deficits in VSWM is a major component of ADHD.     

Organizational Socialization: A Field Study into Socialization Success and Rate

The last decade has witnessed a resurgence of organizational socialization research. However, a critical question has been neglected: Is there a common underlying pattern to organizational socialization? We investigated newcomer learning, job satisfaction and intent to quit as common indicators of socialization, in research with 222 newcomers at two organizations during the crucial post‐entry period. The results support a learning‐dependent model of newcomer adjustment, with learning in specific domains related to improved attitudinal outcomes. Some aspects of organizational socialization were not uniform across the two organizations, suggesting a need for further development of socialization models and greater accounting for this in organizational socialization research.     

The impact of organisational change on professionals working within a Community Mental Health Team (CMHT): a psychodynamic perspective

The aim of this study was to explore the effects of organisational change upon staff working in a Community Mental Health Team (CMHT). A grounded theory methodology was employed to analyse data from eight interviews with a range of staff. Analysis identified one core category and five key categories. ‘Corrosion of good work: an ethos in decline’ represents the core category and refers to the staff members’ sense of demoralisation of their professional values and integrity. The first key category, ‘Cultural change’, refers to staff members’ perception of change within the CMHT, with an increased emphasis on regulation, performance management and proceduralisation. Three further key categories were identified: ‘Caring clinicians and uncaring managers’, ‘Confusion regarding professional roles’ and ‘Disconnecting and isolating’. The fifth key ‘Staff departing and increasing risk for clients’, describes the impact of the working culture. These categories and emerging theory were interpreted through a psychodynamic lens, and identified the need for better management practice, support, training and supervision of staff as the foundations of safe practice.     

Comparison of behavioral intervention and sensory integration therapy on challenging behavior of children with autism

The current study used an AB crossover design to directly compare the effects of sensory integration therapy (SIT) and behavioral intervention (BI) on the challenging behavior of 10 participants with autism spectrum disorder. During the intervention phase, all participants received both treatments. Follow‐up probes were conducted 1 month following intervention for 4 participants implementing the more effective intervention. The results showed that BI successfully reduced challenging behavior to low‐ or near‐zero levels. In contrast, SIT resulted in higher and more variable rates of challenging behavior. One exception was noted for Participant 4 who engaged in a decreased level of challenging behavior during SIT. The findings are discussed in relation to implication for practice and future research.     

Effects of repetitive stress during the acute phase of Trypanosoma cruzi infection on chronic Chagas' disease in rats

The effect of repetitive stress during acute infection with Trypanosoma cruzi (T. cruzi) on the chronic phase of ensuing Chagas' disease was the focus of this investigation. The aim of this study was to evaluate in Wistar rats the influence of repetitive stress during the acute phase of infection (7 days) with the Y strain of T. cruzi on the chronic phase of the infection (at 180 days). Exposure to ether vapor for 1 min twice a day was used as a stressor. Repetitive stress enhanced the number of circulating parasites and cardiac tissue disorganization, from a moderate to a severe diffuse mononuclear inflammatory process and the presence of amastigote burden in the cardiac fibers. Immunological parameters revealed that repetitive stress triggered a reduced concanavalin A induced splenocyte proliferation in vitro with major effects on the late chronic phase. Serum interleukin-12 concentration decreased in both stressed and infected rats in the early phase of infection although it was higher on 180 days post-infection. These results suggest that repetitive stress can markedly impair the host's immune system and enhance the pathological process during the chronic phase of Chagas' disease.