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The purpose of this paper is to determine the extent to which mental health, physical health, communication, learned function of the behaviour(s), severity of disability, living arrangement, age, and gender, alone or in combination, predicted challenging behaviours in adults with intellectual disability.

In total, 74 adults with intellectual disability and their paid carers were recruited into the study from adult disability services in Victoria, Australia. Paid carers provided information about participants with intellectual disability on a range of measures targeting each variable of interest.

Based on principle components analyses of three challenging behaviour measures, two topographies of challenging behaviour emerged: contact and non-contact behaviours. Multiple regression analysis revealed that contact behaviours were predicted by anxiety scores and severity of disability. In addition to severity of disability and anxiety scores, non-contact behaviours were also predicted by sensory scores.

The results of the current study indicate that contact and non-contact behaviours were determined by multiple factors. Clinicians and others who work with people who display challenging behaviour may, therefore, find it helpful to utilise the biopsychosocial model in their formulations of possible reasons that motivate a person to engage in challenging behaviour.

These results contribute to the evidence base available to clinicians and researchers to guide future assessment for challenging behaviour. Expansion of functional assessment methods to explore factors not traditionally included, such as mental health and severity of intellectual disability, as causes of challenging behaviour, may prove helpful.

The aim of this paper is to provide an overview of the dominant approaches used to explain causes of challenging behaviour.

This paper is the second in a two‐part series. It presents the causes of challenging behaviour according to the three theoretical approaches that have dominated the literature: applied behaviour analysis; biological factors; and psychiatric disorders.

It is apparent that the causes of challenging behaviour are likely to be complex and involve multiple factors. The approaches that have dominated the literature focus on single causes and do not explore possible interactions between various causes. Given the shortcomings of existing approaches, a fourth approach, the biopsychosocial model, is proposed as an alternative model to explain the causes of challenging behaviour.

This paper is the most recent of only a few providing an overview of the various approaches that seek to explain the causes of challenging behaviour.

This article is the first in a two‐part series exploring challenging behaviour, its prevalence, risk factors and causes. The aim of this article is to provide an overview of prevalence studies and explore the various risk factors that have been associated with challenging behaviour. The authors also seek to explore methodological differences across studies that may contribute to the prevalence variations reported in the literature.

The article summarises the findings from frequently cited prevalence studies as well as more recent studies.

The prevalence of challenging behaviour reported in the literature has varied due to methodological differences across studies. Despite this, the best estimate is believed to be from 15 to 17.5 per cent. A range of factors have been associated with challenging behaviour and include gender, age, severity of disability and residential setting.

This article appears to represent the most current overview of research in this area.

The purpose of this paper is to explore the relationship between demographics and an employee's understanding of and support for the recruitment of culturally and linguistically diverse (CALD) groups in a policing context. Design/methodology/approach – A multi‐method research approach was adopted where a postal survey, comprised of both closed and open questions, was distributed to 500 Victoria Police employees and yielded a response rate of 19.5 per cent.

The findings show that gender and higher education have significant relationships to understanding CALD and lead to significant support for the recruitment of CALD employees. Results show that the instrument utilized in this study was highly reliable with a Cronbach Alpha value of 0.802. Alpha values for “understanding” and “support” were 0.813 and 0.788, respectively. Research limitations/implications – The limitation of this study is that the findings are based on a pilot study with 97 responses.

The utility of the conceptual model generated in this study has practical implications and value as it is being implemented to assist Victoria Police in designing CALD policies, procedures and practices.

The paper proposes an empirical model showing demographics as critical determinants in understanding and support for CALD recruitment and retention in Policing. Furthermore, the conceptual model makes a significant contribution to the literature and advances Morris et al.'s model.