Health-Oriented Environmental Categories, Individual Health Environments, and the Concept of Environment in Public Health.

The term 'environment' is not uniformly defined in the public health sciences, which causes crucial inconsistencies in research, health policy, and practice. As we shall indicate, this is somewhat entangled with diverging pathogenic and salutogenic perspectives (research and policy priorities) concerning environmental health. We emphasise two distinct concepts of environment in use by the World Health Organisation.

Not by signalling alone: Music's mosaicism undermines the search for a proper function.

Mehr et al. seek to explain music's evolution in terms of a unitary proper function - signalling cooperative intent - which they cash out in two guises, coalition signalling and (allo)parental attention signalling. Although we recognize the role signalling almost certainly played in the evolution of music, we reject "ultimate" causal explanations which focus on a unidirectional, narrow range of causal factors.