Narcissism can be expressed in grandiose or vulnerable forms. We examined whether positive psychological states (defined by the Oxford Happiness Inventory (OHI) and the Diener Satisfaction With Life (SWL) scales) assisted differentiation relative to general personality traits and the ''the Dark Triad'' (psychopathy, narcissism, and Machiavellianism, measured by the D12 and Short Dark Triad (SD3) indices) for 840 persons primarily from the UK, USA and Canada. The best fitting structural equation model comprised two latent variables, one of positive mood (comprising total scores on the OHI and SWL scales), and another forming a ''dark dyad'' of Machiavellianism and psychopathy (predicted by low agreeableness and lower positive mood), with narcissism regarded as a separate construct correlated with the dark dyad. Latent positive mood was primarily predicted by higher emotional stability and extraversion. Narcissism was predicted by lower emotional stability, lower agreeableness, and higher extraversion. Latent profile analysis identified four groups in the data: ''unhappy but not narcissistic'', ''vulnerable narcissism'', ''happy non-narcissism'' and ''grandiose narcissism''. Our results suggest more problematic narcissism can be identified by reference to measures indexing positive mood states and general personality traits.

This study suggests that the EI service may be associated with reductions in the long-term suicide rate. Suicide at different stages of schizophrenia was associated with unique risk factors, highlighting the importance of a phase-specific service.

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There have been several cases worldwide of a phenomenon termed ‘happy slapping’ in the recent years. This paper discusses happy slapping and undertakes an analysis of this new crime trend. The analysis is undertaken using four angles (the ‘CLIP profiling approach’ employed by the Behavioural Sciences Unit, Singapore) using five case studies from different parts of the world: a criminalistics and forensic science perspective, a legal perspective, an investigative and operational perspective and a psychological perspective. Each perspective provides a richer understanding of this new phenomenon. The paper concludes with recommendations for future research on this phenomenon.