		Interaction	Main effects		Simple main effects	Adjusted η²
		Interaction	Survey timing	Type of tag game	Simple main effects	Adjusted η²
Helping behavior related self-efficacy	Nakama-oni	9.29**	0.43	1.94	Pre Nakama-oni < Post Nakama-oni	*	0.05
Helping behavior related self-efficacy	Regular tag	0.15	0.01	0.04	Post Regular tag < Post Nakama-oni	**	0.07