Resource Teachers: Learning and Behaviour (RTLB) work with teachers to identify learning and behaviour needs of students who experience barriers to educational success. The language RTLB use can have a significant impact on teachers’ response to the inclusion of students with special learning needs and is key to improving educational outcomes for all learners. We examined the extent to which RTLB in New Zealand used inclusive, strengths-based language in initial meetings with teachers and whether shifts could be made through professional learning and development (PLD). Data collected included audio recordings, transcripts of initial meetings pre- and post-PLD, RTLB reflections on both transcripts, and questionnaires. Results indicate limited use of inclusive, strengths-based language prior to PLD. However, PLD that provided targeted opportunities to reflect on evidence of language behaviour and to practise requisite skills markedly increased RTLB awareness, knowledge, and skills with respect to inclusive, strengths-based language. Findings indicate that change often requires disrupting long-held beliefs and practices and a need for evidence of these to be able to do so. The findings have implications for the type of in-depth PLD needed to facilitate change in the language RTLB use when working with teachers.

The developmental interplay between nature and nurture is discussed, with particular reference to implications for research in developmental psychopathology. The general principles include individual differences in reactivity to the environment, two-way interplay between intraindividual biology and environmental influences, and the need to consider broader social contextual features. Individuals actively process their experiences; they also act on their environment to shape and select their experiences, and individual characteristics change over time. Key findings on genetic effects include their ubiquitous influence, the multifactorial origin of most psychopathology, the involvement of several genes in most mental disorders, some genetic effects operate through dimensional risk features rather than directly on disorder, some genetic effects are dependent on gene–environment correlations and interactions, and genetic effects increase with age. Key findings on environmental effects include their ubiquitous influence, the genetic mediation of some supposed environmental effects, the importance of passive gene–environment correlations, the paucity of evidence regarding environmental effects on lifetime liability to psychopathology, the lack of understanding of environmental effects on the organism, and the importance of nonshared environmental effects. Research strategies to investigate environmental risk mediation include the range of genetically sensitive designs, migration studies, secular trend investigations, studies of nonfamilial environments, and examination of intraindividual change in relation to measured environmental alterations. Proximal processes involved in person–environment interplay are discussed in relation to person–environment interactions and evocative and active person–environment correlations.