“…As such, we have little understanding on the processes through which TM programs impact employees' attitudes and behaviours (Gelens, Dries, Hofmans, & Pepermans, 2015). Recently, Gallardo-Gallardo, Njis, Dries, and Gallo (2015), in their review paper on TM, lament that "the TM field is hardly on the verge of entering the stage of maturity at this point, as a much stronger theoretical basis is required-prescribing relevant variables, measures, and causal relationships-to allow for a shift towards theory-driven research" (p. 275). Hence, research is needed to open the 'black box' by examining the processes through which TM shapes employee attitudes and behaviours (Gallardo-Gallardo, Dries, & González-Cruz, 2013;GallardoGallardo & Thunissen, 2016).…”