Mead and Irish's (2019) review highlights the absence of behavioural
theory from most sleep hygiene interventions. A strong theoretical
foundation can bolster the effectiveness, uptake and translation of
behaviour change interventions (Prestwich et al., 2014; Rothman,
Baldwin, Hertel, & Fuglestad, 2004). Mead and Irish (2019) extolled
the virtues of expectancy-value theories, which portray behaviour
as an output of deliberation over expected outcomes and the subjective
value assigned to those outcomes, as mediated by the formation
of intentions to act. These theories may not be the most
useful behavioural theories for sleep health research. We believe
that attempts to harness behavioural science should move beyond
expectancy-value theories and embrace dual-process models, which
account also for automatic processes that influence much of human
behaviour.