1 = female
2 = male

Undergraduate Major
1 = Psychology
2 = Premed
3 = Biology
4 = Sociology
5 = Economics

Reason for taking the statistis course
1 = Program requirement
2 = Personal interest
3 = Advisor recommendation

Experimental Condition
1 = Easy
2 = Moderate
3 = Difficult
4 = Impossible

Coffee drinking history
0 = not a regular coffee drinker
1 = regularly drinks coffee

Score on MAth Background quize
999 = missing (not taken)