Question 15.37

15.37 Trustworthiness of individuals and groups.

Refer to the previous exercise. Here is a summary of the percent returned to the sender.

Sender Responder
Individual Individual 32 25.1 19.5
Individual Group 25 25.1 17.5
Group Individual 25 23.2 22.1
Group Group 27 16.7 18.7

Repeat parts (a)–(d) of Exercise 15.36 using these results. In this case, none of the effects is statistically significant.

15.37

(a) . (b) Yes, the largest is less than twice the smallest . (c) Sender Individual: 25.1, Sender Group: 19.825, Responder Individual: 24.27, Responder Group: 20.74. (d) There appears to be an interaction effect. When the sender was an individual, there was no difference in the amount returned, but when the sender was a group, they returned more money to an individual than they did to a group.