Theory of planned behaviour and implementation intentions in dental attendance

The thesis used a model of health behaviour to examine the predictors of dental attendance. Older respondents who had strong intentions, low perceived vulnerability, stable plans to attend, and were influenced by significant others were more likely to have attended the dentist for preventive care in the last 12 months. The portfolio concludes that attachment theory is a useful conceptual framework for enhancing our understanding of the antecedents and consequences of childhood sexual abuse.

Internet-based cognitive behaviour therapy for erectile dysfunction

This thesis involved the development and evaluation of "Rekindle", an internet-based cognitive behaviour therapy (CBT) for erectile dysfunction (ED). For highly motivated couples, "Rekindle" was more effective than no treatment for improving sexual function and relationships. Most men who completed "Rekindle" had maintained treatment gains at 3-month follow-up. The professional portfolio presented 4 case studies which demonstrate that barriers to recovery from early psychosis are often complex and challenging issues, and that effective strategies need to be implemented to overcome these issues during treatment. When insufficient intervention is provided to address these barriers, the likelihood of successful outcome following early psychosis is significantly reduced.

Developmental stress and female mate choice behaviour in the zebra finch

The potential effects of early environmental conditions on adult female mate choice have been largely neglected in studies of sexual selection. Our study tested whether developmental stress affects the mate choice behaviour of female zebra finches, Taeniopygia guttata, when choosing between potential mates. In an experiment manipulating developmental condition, female zebra finches were raised under nutritional stress or control conditions. In adulthood, female preferences were assessed using extensive four-stimulus mate choice trials. Nutritional stress affected growth rates during the period of stress, with experimentally stressed females lighter than controls. During mate choice trials stressed females were almost three times less active than controls and made fewer sampling visits to the stimulus males, although we found no evidence of a direct effect of developmental experience on which males were preferred. Thus, developmental experience had a clear effect on behavioural patterns in a mate choice context. To test whether this effect is specific to a mate choice context, we also investigated the effect of developmental stress on female activity rates in three social contexts: isolation, contact with a conspecific male (a potential mate) and contact with a conspecific female. Here, female activity did not differ between the experimental treatments in any of the social situations. Overall, our findings suggest that environmental conditions during early development can have long-term context-dependent consequences for adult female mate choice behaviour, mediated by changes in activity rates.

Understanding women's experience of sexual desire to inform scale development

Interviews with women regarding their experiences of sexual desire informed the development of the Female Sexual Desire Questionnaire. A validation sample of 741 women completed this questionnaire, with six interrelated factors found. These components of sexual desire were labelled: Dyadic Desire, Solitary Desire, Resistance, Positive Relationship, Sexual Self-image, and Concern. The portfolio concludes that a standard evaluation process is needed to assess the effectiveness of men's behaviour change groups (MBCGs), and that such programs should comprise only one component of a comprehensive multifaceted intervention strategy against intimate partner violence (IPV). Four case studies are presented.

Professional response and attitudes toward female-perpetrated child sexual abuse : a study of psychologists, probationary psychologists and child protection workers

Previous studies have suggested that lay people and professionals both tend to deny or minimise female-perpetrated sexual abuse of children. However, such abuse has been shown to have negative impacts on the victims. This study investigated whether professionals who might work with victims or perpetrators of childhood sexual abuse show a bias in processing scenarios and making decisions when confronted such abuse. A sample of 231 psychiatrists, psychologists, probationary psychologists and child protection workers responded to variations in vignettes in which women and men offended against children, and completed a questionnaire assessing attitudes to women's sexually abusive/offending behaviour toward children. All professional groups regarded cases involving female perpetrators of child sexual abuse as serious and deserving of professional attention. However, while there were some differences between groups, female perpetrators were more likely than male perpetrators to be considered leniently, suggesting that minimisation of female-perpetrated sexual abuse of children may persist in the professional arena. As a result, both female perpetrators of sexual abuse and their victims may go untreated, and in the case of perpetrators, their behaviour may go unsanctioned. Training for professionals to enhance their understanding of the seriousness of sexual abuse perpetrated by women is indicated.

What were they thinking? An exploration of child sexual offenders' beliefs using a lexical decision task

Cognitive distortions have been afforded a key role in the offending behaviour of child sexual offenders. While the mechanisms underlying cognitive distortions are not fully understood, they are generally thought to reflect entrenched beliefs that distinguish child sexual offenders from other individuals. We investigated this hypothesis using a robust experimental technique called the lexical decision task. Child sexual offenders, offender controls, and non-offender controls completed a lexical decision task in which they responded to words that completed sentences in either an offence-supportive or nonoffence-supportive manner. Contrary to predictions, child sexual offenders did not respond faster to words that were consistent with offence-supportive beliefs, relative to controls. However, they did show accelerated recognition for word stems supporting external locus of control beliefs. These results highlight the need to use cognitive experimental methods to study child sexual offenders' beliefs, and the importance of investigating potential alternative drivers of cognitive distortions.

Adolescent victims with an intellectual disability : perceived credibility in cases of sexual abuse

The study aimed to assess perceptions of the credibility of adolescent victims with intellectual disability. Results revealed that victim and participant characteristics influenced perceptions of the credibility of the victim and verdict responses. Findings related to the level of ID, type of offence, perceptions of competency, honesty, suggestibility, and gender of victim and participant.

Long-term species, sexual and individual variations in foraging strategies of fur seals revealed by stable isotopes in whiskers

Background: Individual variations in the use of the species niche are an important component of diversity in trophic interactions. A challenge in testing consistency of individual foraging strategy is the repeated collection of information on the same individuals.

Methodology/Principal Findings: The foraging strategies of sympatric fur seals (Arctocephalus gazella and A. tropicalis) were examined using the stable isotope signature of serially sampled whiskers. Most whiskers exhibited synchronous delta C-13 and delta N-15 oscillations that correspond to the seal annual movements over the long term (up to 8 years). delta C-13 and delta N-15 values were spread over large ranges, with differences between species, sexes and individuals. The main segregating mechanism operates at the spatial scale. Most seals favored foraging in subantarctic waters (where the Crozet Islands are located) where they fed on myctophids. However, A. gazella dispersed in the Antarctic Zone and A. tropicalis more in the subtropics. Gender differences in annual time budget shape the seal movements. Males that do not perform any parental care exhibited large isotopic oscillations reflecting broad annual migrations, while isotopic values of females confined to a limited foraging range during lactation exhibited smaller changes. Limited inter-individual isotopic variations occurred in female seals and in male A. tropicalis. In contrast, male A. gazella showed large inter-individual variations, with some males migrating repeatedly to high-Antarctic waters where they fed on krill, thus meaning that individual specialization occurred over years.

Conclusions/Significance: Whisker isotopic signature yields unique long-term information on individual behaviour that integrates the spatial, trophic and temporal dimensions of the ecological niche. The method allows depicting the entire realized niche of the species, including some of its less well-known components such as age-, sex-, individual- and migration-related changes. It highlights intrapopulation heterogeneity in foraging strategies that could have important implications for likely demographic responses to environmental variability.

Motivational interviewing techniques : facilitating behaviour change in the general practice setting

Background: One of the biggest challenges that primary care practitioners face is helping people change longstanding behaviours that pose significant health risks.

Objective: To explore current understanding regarding how and why people change, and the potential role of motivational interviewing in facilitating behaviour change in the general practice setting.

Discussion: Research into health related behaviour change highlights the importance of motivation, ambivalence and resistance. Motivational interviewing is a counselling method that involves enhancing a patient's motivation to change by means of four guiding principles, represented by the acronym RULE: Resist the righting reflex; Understand the patient's own motivations; Listen with empathy; and Empower the patient. Recent meta-analyses show that motivational interviewing is effective for decreasing alcohol and drug use in adults and adolescents and evidence is accumulating in others areas of health including smoking cessation, reducing sexual risk behaviours, improving adherence to treatment and medication and diabetes management.

“Just a little bit of cheeky ribaldry”? Newsroom discourses of sexually harassing behaviour

 This paper is concerned with how Australian print news media journalists, male and female, remember, talk about, experience, acknowledge, condemn, and/or deny sexually harassing behaviour in the newsroom. A total of seventeen in-depth, semi-structured interviews were conducted with eight male and nine female journalists in late 2003 and early 2004. The interviewees ranged in age from 19 to 56 and differed in levels of industry experience. The interviews were not set up to specifically discuss sexually harassing behaviour in the newsroom; however it was a theme that arose in seven of the interviews about newsroom culture, my broader PhD project. The female interviewees make clear their encounters are constant reminders of how their bodies do not "fit" and/or where and how they do fit in this occupation. This is the case, even though some women do not use the term "sexual harassment" to describe the behaviour that clearly constitutes it under Australian government legislation. The two male journalists interviewed who mentioned harassment talk about it in defence of accepted office behaviour, or in passing about procedural business policy. The use of the term "sexual harassment," or lack of its use, also tells us about the place of feminism and/or feminist inspired government legislation in journalism's occupational culture. © 2007 Taylor & Francis.

Sentencing in child sexual assault cases: factors influencing judicial decision-making

To date, there has been limited examination of variables that influence sentencing in child sexual abuse cases. This study examines the extent to which offence characteristics (such as the number of offences, number and age of victims), the behaviour and perceived credibility of the victim impact upon both sentence length and the setting of earliest parole dates. Analyses conducted using data from 66 adjudicated cases of child sexual assault from the County Court of Victoria, Australia revealed that longer sentences were handed down to offenders who had perpetrated multiple offences, or who had committed offences against younger children. Lower levels of victim credibility were associated with shorter sentences and earlier parole dates for offenders, which were also associated with the presence of more harmful behavioural indicators of abuse. The findings are discussed regarding the importance of presenting evidence about the behaviour of victims following sexual abuse in criminal trials. © 2013 Copyright National Organisation for the Treatment of Abusers.

Animal behaviour and cancer

Scientists are increasingly coming to realize that oncogenic phenomena are both frequent and detrimental for animals, and must therefore be taken into account when studying the biology of wildlife species and ecosystem functioning. Here, we argue that several behaviours that are routine in an individual's life can be associated with cancer risks, or conversely prevent/cure malignancies and/or alleviate their detrimental consequences for fitness. Although such behaviours are theoretically expected to be targets for natural selection, little attention has been devoted to explore how they influence animal behaviour. This essay provides a summary of these issues as well as an overview of the possibilities offered by this research topic, including possible applications for cancer prevention and treatments in humans.

Flight initiation distances in relation to sexual dichromatism and body size in birds from three continents

Predators exert strong selection pressures on their prey. Prey would therefore benefit by adjusting their behaviour to the risk of predation, while predators conversely would benefit from adjusting their behaviour to that of their prey. Extravagant ornamentation has evolved to attract mates and/or successfully compete with conspecifics of the same sex to secure high mating success, even if that occurs at a cost of increased risk of predation. Thus, sexually dichromatic species may be more susceptible to predation than sexually monochromatic species, and the presence of compensation is indicative of such species being more vulnerable. If extravagant ornamentation is costly in terms of predation risk, then we should expect sexually dichromatic species to have longer flight initiation distances (FID) than sexually monochromatic species. If ornamentation is acquired as a handicap with only individuals in prime condition being able to display with the smallest viability cost, we should expect sexually dichromatic individuals to have shorter FID than sexually monochromatic individuals. Such differences among individuals should, on an evolutionary time scale, translate into differences in FID being related to differences in sexual dichromatism among species. We investigated the relationship between FID and sexual dichromatism in phylogenetic analyses, while accounting for effects of continent (Australia, North America, and Europe), body mass, the interaction between sexual dichromatism and body mass and the interaction between sexual dichromatism and continent. In an analysis of 447 species we found shorter FID in sexually dichromatic than in sexually monochromatic species (consistent with the handicap hypothesis because sexually dichromatic species took greater risks), especially so at large body size. FID differed among continents and the relative difference in FID between sexually monochromatic and sexually dichromatic species was larger in Europe than in Australia and North America. These differences among continents may be attributed to latitudinal effects of predation. These findings are important for current ideas about the evolution of secondary sexual characters because they imply covarying continental differences in predation, especially for large bodied sexually dichromatic species.

Sexual size dimorphism and body condition in the Australasian Gannet

Sexual size dimorphism is widespread throughout seabird taxa and several drivers leading to its evolution have been hypothesised. While the Australasian Gannet (Morus serrator) has previously been considered nominally monomorphic, recent studies have documented sexual segregation in diet and foraging areas, traits often associated with size dimorphism. The present study investigated the sex differences in body mass and structural size of this species at two colonies (Pope's Eye, PE; Point Danger, PD) in northern Bass Strait, south-eastern Australia. Females were found to be 3.1% and 7.3% heavier (2.74 ± 0.03, n = 92; 2.67 ± 0.03 kg, n = 43) than males (2.66 ± 0.03, n = 92; 2.48 ± 0.03 kg, n = 43) at PE and PD, respectively. Females were also larger in wing ulna length (0.8% both colonies) but smaller in bill depth (PE: 2.2%; PD: 1.7%) than males. Despite this dimorphism, a discriminant function provided only mild accuracy in determining sex. A similar degree of dimorphism was also found within breeding pairs, however assortative mating was not apparent at either colony (R2 < 0.04). Using hydrogen isotope dilution, a body condition index was developed from morphometrics to estimate total body fat (TBF) stores, where TBF(%) = 24.43+1.94*(body mass/wing ulna length) - 0.58*tarsus length (r2 = 0.84, n = 15). This index was used to estimate body composition in all sampled individuals. There was no significant difference in TBF(%) between the sexes for any stage of breeding or in any year of the study at either colony suggesting that, despite a greater body mass, females were not in a better condition than males. While the driving mechanism for sexual dimorphism in this species is currently unknown, studies of other Sulids indicate segregation in foraging behaviour, habitat and diet may be a contributing factor.

The sexual motivation of boars housed adjacent to ovariectomised gilts did not affect the efficiency of detecting hormonally induced oestrus using the back pressure test

This study tested the hypothesis that the efficiency of detecting oestrus in gilts, using the back pressure test (BPT), will be reduced when gilts are housed adjacent to a boar of high sexual motivation compared to when gilts are housed adjacent to a boar of low sexual motivation. The experiment was a 2 x 2 Latin square design with three replicates. Boars of high and low sexual motivation were selected on the basis of the total number of copulations and the mean reaction time to first mount during three mating tests. Twelve boars were observed in mating tests and the three highest and lowest ranking boars were assigned to three palm, each pair containing a boar of high and a boar of low sexual motivation. One pair was used in each replicate. In each replicate, two groups of six ovariectomised gilts were housed for 14 days, commencing 7 days prior to hormonally induced destrus, adjacent to a boar of either high or low sexual motivation. All gilts were checked twice daily for oestrus using the BPT. In the first replicate, the level of proceptive behaviour of the gilts was quantified immediately after checking for oestrus in a 3-rain test in which the amount of time that the gilts spent within 0.5 m of a pen containing a sexually mature boar was recorded. There were no effects of housing gilts adjacent to boars of high or low sexual motivation on the percentage of gilts detected in oestrus, the percentage of gilts detected in oestrus for more than I day, the duration of oestrus or the level of proceptive behaviour of gilts. These data suggest that the level of sexual motivation of boars does not influence the efficiency of detecting hormonally induced oestrus, using the BPT, in ovariectomised gilts housed adjacent to boars.