Variable list of cleaned data (only complete cases):

subj_no:
	entry number of a participant

date:
	time and date of test participation

weekday:
	(day of test participation)

	1 = Monday
	2 = Tuesday
	3 = Wednesday
	4 = Thursday
	5 = Friday
	6 = Saturday
	7 = Sunday

day_cat:
	(time category of the day)

	1 = Night
	2 = Morning
	3 = Afternoon
	4 = Evening

age:
	(in years)

gender:

	1 = male
	2 = female
	3 = other

heritage:
	(country code)


continent:
	(heritage continent)
	
	1 = Europe
	2 = Asia
	3 = North America
	4 = South America
	5 = Africa
	6 = Oceania
	7 = Antarctica


city_size:
	(city size of the residence) 

	9 =  more than 10 million people 
	8 = 3 to 10 million people
	7 = 1 to 3 million people =
	6 = 300,000 to 1 million people 
	5 = 100,000 to 300,000 people
	4 = 20,000 to 100,000 people
	3 = 1,000 to 20,000 people
	2 = 100 to 1,000 people
	1 = less than 100 people


music_exp:
	(question: Do you make music?)
	
	1 = never
	2 = almost never
	3 = sometimes
	4 = fairly often
	5 = very often
	6 = I am a professional


arousal_rating:
	(question: How do you feel right now?)
		
	1 = very calm
	2 = rather calm
	3 = neutral
	4 = rather excited
	5 = very excited


work_hours_rating:
	(question: How many hours do you spend studying/working in a typical week?)
		
	1 = none
	2 = up to 10 hours
	3 = up to 20 hours
	4 = up to 30 hours
	5 = up to 40 hours
	6 = up to 50 hours
	7 = more than 50 hours

pss_score: 
	(perceived stress scale short version: values between 0 - 16)

no_entries:
	(number of participations)

	0 = never
	1 = once
	2 = twice
	3 = more than twice

no_tries:
	(number of tries for successful tapping (Coefficient of Variation threshold: 0.1)

software:

	1 = Chrome
	2 = Safari
	3 = Firefox
	4 = QQ Browser
	5 = Edge
	6 = Facebook
	7 = Other

operating_sys:

	1 = Android
	2 = Windows
	3 = iOS
	4 = Mac OS X
	5 = Other

device_type:

	1 = Mobile
	2 = Computer