Course
1 = Biol or Biochem
2 = Int Relations
3 = Psychology
4 = Engineering
5 = Anthropology
6 = Music
8 = Admin
11 = Econ
12 = Law
13 = Med/Dent
14 = Arts
15 = Arcitecture
16 = Media journalism
17 = Catering and hospitality)

1 = Male
2 = Female

Ethnicity
1 = White
2 = Mestizo
3 = Indigena
4 = Negro
5 = Montubio

0 = No
1 = Si

Time in minutes on Facebook
666 = nothing
777 = MB info only
888 = % info only
999 = Missing

Facebook Binary (on battermeter or not)
0 = No
1 = Yes

Verbal Operant Conditioning Trial_1
1 = He
2 = Has
3 = Ha
4 = Hemos
5 = Han

Mind in the Eye Trial_1
0 = Incorrect
1 = Correct

Barratt Impulsiveness Scale Trial_3
1 = Raramente
2 = Ocasionalmente
3 = A menudo
4 = Siempre o casi siempre

Influencing Word Choice (i.e. could the participant explicitly identify the words that were being reinforced)
0 = None correct
1 = One correct
2 = Both correct

Did participant develop awarness of the response-reinforcer contingency
0 = No awareness
1 = Awarenesss of at least 1 of the words reinforced

Dependence on mobile phone according to MPPUS scores > 160
0 = no
1 = yes (MPPUS>160)