The article mentions Mosche Szyf at McGill. Michael Meaney[0], also at McGill, is one of the main investigators in this area. IIRC, mice studies are convincing, in as much as the exact molecular mechanism for epigenetic transmission was tested in crossover studies. “Environmental conditions during early development shape brain development. The Meaney lab idenfitied phenotypic variations in rodent models that derive from variations in maternal care. Maternal care stably modifies the epigenetic state and expression of genes implicated in behavioural and endocrine responses to stress and learning. These studies were the first to describe the influence of the social environment on genomic structure and function.”