Table 6.

Summary of reward relationships within the SEM models for taking vitamin C tablets

Potential reward type	Pathway	Time 1, b	Time 2, b	Time 3, b	Time 4, b
Pleasure	Mediated
	Reward-Behaviour	.215	.345*	−.066	−.116
	Behaviour Automaticity	.175*	.148*	.300***	.110
	Moderated	.048	.096*	.073*	.062
Intrinsic motivation	Mediated
	Reward-Behaviour	.208	.120	.039	−.112
	Behaviour-Automaticity	.184*	.167**	.280***	.123
	Moderated	.066*	.056*	.028	.001
Perceived utility	Mediated
	Reward-Behaviour	.323	−.177 R-I : .833*** I-B: .267**	.074	−.147
	Behaviour-Automaticity	.201**	.168**	.269***	.086
	Moderated	.086	.033	.059	.004
Perceived benefit	Mediated
	Reward-Behaviour	−.410			−.234
	Behaviour-Automaticity	.205**	-	-	.088
	Moderated	.103			.037

Note: for vitamin C, the intervention took place at T0

Significant mediated effects are only represented in the coefficients marked in bold, where more than one significant coefficient makes a complete significant pathway between reward to automaticity. (Items in italics reflect a mediation relationship from reward to automaticity that is via both via intention and behaviour, rather than just via behaviour. The coefficients from reward to intention are marked R-I, and the coefficients from intention to behaviour are marked I-B). Perceived benefit was not measured at Time 2 or Time 3

* p < .05, ** p < .01, *** p ≤ .001