Some properties of the olfactory system of man

Preliminary investigations into the effects of a 12-h diurnal variation suggested there was a 10-fold decrease in odor sensitivity from morning to evening. For a selected group of odorants (methyl, t-butyl, and phenyl isonitrile), the difference between detection and recognition thresholds in general was found to be 10-fold; however, for some Ss the difference was less. When Ss were blindfolded, no changes in odor sensitivity were noted. Similarly, imposing an auditory stress on the test situation did not significantly alter odor sensitivity in either experienced or naive Ss,     

Olfactory detection thresholds in man under conditions of rest and exercise

Detection thresholds for seilen odorants were measured under conditions of rest and exercise. The test panel comprised six males with previous experience in odor detection. Exercise was maintained constant by using a modified bicycle positioned within the context of an air-dilution olfactometer. The effects of exercise were idiosyncratic for Ss: odor sensitivity was increased in some Ss, decreased in some, and not changed in others. Results of these experiments are discussed in terms of intra-subject variance within sessions and from session to session. In addition, two test techniques—one a fixed series and the other a tracking procedure—were evaluated for rapid estimation of an odor threshold. The tracking procedure facilitated prompt detection of changes in sensitivity for individual Ss.     

When the luck runs out: Policy challenges confronting careers guidance in Australia

The policy challenges confronting careers guidance in Australia arise from economic stringency, changes in working, and social change. Current responses include rationalising services, linking counselling with training, targeting services, and providing evidence for effectiveness. Other responses needed by both counsellors and administrators are anticipating changes, marketing, and co-ordinating services.     

The Equivalence of Contingency Structure for Intuitive Covariation Judgments About Height,Weight, and Body Fat

In a complete between-subjects design, 576 respondents judged covariations of problems framed around height, weight, and body fat. A verbal measure was used, consisting of prepositional statements representing relationships between two of the variables, as well as two types of response options: true or false, and a 7-point, bipolar, Likert-type scale. Consistent with previous findings, weight and body fat were unambiguously judged as if positively correlated; there were indications of a perceived negative correlation of height and body fat; and there was no evidence that participants regarded height and weight as positively correlated. Furthermore, there was no reliable evidence in support of framing effects. However, there were indications of influence for conditional format. These findings are discussed relative to previous and ongoing research efforts, and it is concluded that it may be inappropriate to regard variations in conditional format as parallel items. Measures involving all possible variations are considered fundamentally unbiased and consistent with I. Ajzen's (1988) principle of aggregation.     

Family routines and rituals in the context of chronic conditions: A review

This paper is a systematic review of 39 empirical studies on family routines and rituals in the context of a chronic condition of a family member. The search strategy encompassed a wide spectrum of chronic conditions affecting family members from childhood/adolescence to adulthood. Twenty quantitative, 13 qualitative, 3 mixed‐methods, and 3 intervention studies published between 1995 and 2012 were reviewed. A conceptual framework of routines and rituals as key elements of family health was adopted, resulting in three main findings. First, a chronic condition in a family member impacted the frequency and nature of family's routines and rituals. Second, these whole‐family interactions held important functions for individuals and families, constituting strategic resources in the condition's management and opportunities for emotional support exchanges, and providing the family with a sense of normalcy amid the challenges posed by chronic conditions. Third, family routines and rituals were linked to positive health and adaptation outcomes for both patients and family members. Implications for future research include the need for the distinction between routines and rituals against a conceptual background, use of validated assessment methods, and empirical examination of predictors of changes in routines and rituals throughout the course of the condition and of the mechanisms linking these family events to positive outcomes. Conclusions support the inclusion of routines and rituals in a family‐centered care approach to the understanding and treatment of chronic conditions.     

Beliefs Contributing to HIV‐related Stigma in African and Afro‐Caribbean Communities in the Netherlands

Thirty years after the first diagnosis, people living with HIV (PLWH) around the world continue to report stigmatizing experiences. In this study, beliefs contributing to HIV‐related stigma in African and Afro‐Caribbean diaspora communities and their cultural context were explored through semi‐structured interviews with HIV‐positive (N = 42) and HIV‐negative (N = 52) African, Antillean and Surinamese diaspora community members in the Netherlands. Beliefs that HIV is highly contagious, that HIV is a very severe disease, and that PLWH are personally responsible for acquiring their HIV infection were found to contribute to HIV‐related stigma, as did the belief that PLWH are HIV‐positive because they engaged in norm‐violating behaviour such as promiscuity, commercial sex work, and, for Afro‐Caribbean diaspora, also homosexuality. These beliefs were found to be exacerbated and perpetuated by cultural taboos on talking about HIV and sexuality. HIV‐related stigma reduction interventions should focus on changing these beliefs and breaking cultural taboos on HIV and sexuality in a manner that is participatory and consistent with the current theory and empirical findings. Copyright © 2011 John Wiley & Sons, Ltd.