Table 1.

Reliabilities of used instruments.

Scale	Dimension	Cronbach’s alpha
SWLS	Satisfaction with studying	0.84
SWSS	Satisfaction with life	0.83
DFS-2	Challenge-skill balance	0.81
	Merging of action and awareness	0.51
	Clear goals	0.74
	Unambiguous feedback	0.76
	Total concentration	0.83
	Sense of control	0.88
	Loss of self-consciousness	0.93
	Transformation of time	0.76
	Autotelic experience	0.86
	Global flow score	0.94
PANAS	Positive affect	0.84
	Negative affect	0.88
COVID-19	COVID-19 impact	0.74