Subjective wellbeing as an affective-cognitive construct

The affective content of Subjective Wellbeing (SWB) was investigated in two separate studies. Study 1 involved a representative sample of 478 participants from across Australia aged between 18 and 72 years. This study tested the circumplex model of affect and then determined the minimum set of affects that explain variance in SWB. The model was supported, with most affects congregated around the valence axis. Overall, 64% of the variance in SWB was explained by six Core Affects, indicating that SWB is a highly affective construct. Study 2 tested the relative strength of Core Affect (content, happy and excited), in three separate models of SWB incorporating cognition (seven discrepancies)
and all five factors of personality. Using a sample of 854 participants aged been 18 – 86 years, structural equation modeling was used to compare an affective-cognitive driven model of SWB, with a personality driven model of SWB and a discrepancy driven model of SWB. The results provide support for an affective-cognitive model which explained 90 percent of the variance in SWB. All models confirm that the relationship between SWB, Core Affect and Discrepancies is far stronger than the relationship between personality and SWB. It is proposed that Core Affect and Discrepancies comprise the essence of SWB. Moreover, Core Affect is the driving force behind individual set-point levels in SWB homeostasis.

Understanding women's breast screening behaviour: a study carried out in South East London, with women aged 50-64 years

Objective To understand low uptake of breast cancer screening through exploring the personal reasoning underlying women's attendance or non-attendance, and identifying differences between those who attend and those who decline.

Design Cross-sectional survey.

Setting Community and home environments of women eligible for breast screening aged 50—64 years, living in South East London. Method Structured, self-completed or assisted-completion questionnaires.

Results The decision to attend or decline screening is rational and personally justifiable, engaging factors linked to emotions and attitude. Attitudes about breast screening and perceived personal importance of breast screening are the strongest predictors of attendance and non-attendance. There are differences between ethnic groups in perceptions of breast screening. Regular attendance at screening is associated with ethnicity, although consistent avoidance of mammography is not. Inconvenience is an important factor in missing appointments, and tends to be prolonged rather than specific to the time or day of the pre-booked invitation. GP and health worker advice are good persuaders towards attendance. Pain and anxiety during mammography are notable dissuaders against re-attending.

Conclusion Appropriate service provision requires consideration of local factors, as well as the medical needs of the population eligible for breast screening. Lay perceptions of potential personal costs of attending or not attending breast screening are important for guiding health promotion. Information providers should consider the language needs of a culturally and educationally mixed community. Health care professionals are well placed to encourage uptake of breast screening through disseminating information that promotes attendance, both within and outside the breast screening service.

A descriptive interview with 64 patients discharged from an acute-psyciatric-inpatient service

Background Acute-mental-health services receive hundreds of admissions every year. Some of these patients will continue to be case-managed by community mental-health teams on discharge from the acute unit while others will not remain in contact with the mental-health service. This study compares the findings of comprehensive interviews conducted with current and past patients of the community mental-health service 3 or more years following case closure from the community ambulatory service.
Methods Between 1 July 1999 and 30 June 2001, there were 2245 closed cases identified at Barwon Health. Letters of invitation to participate in a research project were sent to people who had suffered from psychotic illnesses, and had been case-closed by community mental-health services between the above dates and had not been in contact with the Community and Mental Health Service for at least 6 months. A second group of participants was recruited from people who had also been case-closed by community mental health teams in Barwon Health during the 1999–2001 2-year-time window but whose cases had been re-opened and who were in case management with Barwon Health at the time of the study. All participants were interviewed using the Diagnostic Interview for Psychosis.
Results Letter responses were received from 17 men and 18 women, aged 40.7 ± 12.0 (mean ± SD), who were interviewed. A second group of 17 men and 12 women, aged 40.9 ± 9.6 (mean ± SD) of currently case-managed patients was interviewed. All interviewees reported a detailed history of mental illness. Persistent social dysfunction and impaired quality of life were reported in both groups.
Conclusion Patients suffering from psychotic disorders who had been case-closed by community mental-health teams and had been discharged to the care of their general practitioners or elsewhere continued to show evidence of significant impairment due to mental illness 3 years after being case-closed.

Study of phase transformation and work hardening phenomenon during drilling of Ti-5553 and Ti-64

Titanium 5553 is a recently developed modification of Russian near-β titanium alloy VT-22 which has applications and potential particularly in the aerospace industry for such key components as landing gear. However, indications are that Ti-5553 has poorer machinability characteristics than other Ti alloys and a comprehensive and far-reaching analysis is a necessary research imperative. This paper presents the result of phase transformation and work hardening during drilling of Ti-5553 compared with Ti-64. The aim of this research work is to optimise the machining condition for Ti-5553, in which the β to a phase transformation, together with material work hardening could be fully understood. Analysis of machinability indicators, such as subsurface micrograph and hardness of drilled samples and drilling forces and torques, demonstrated that Ti-5553 generally has poorer machinability characteristics than Ti-64 and to some extent this variation has been quantified to allow for further and more detailed investigation.