In class, a group of 4 people came up with 13 unique ideas on a task when working together as a group. Four individuals outside of the group that were working alone on the same task produced 18 unique ideas, far outperforming each individual in the group. This reduced effort seen in the group can likely be attributed to which of the following?
1) Social Facilitation
2) Informational Influence
3) Social Loafing
4) Evaluation apprehension