We often describe our emotional reaction to social rejection as "pain." Does social rejection cause activity in areas of the brain that are known to be activated by physical pain? If it does, we really do experience social and physical pain in similar ways. Suppose psychologists first included and then deliberately excluded individuals from a social activity while they measured changes in brain activity. After each activity, the subjects filled out questionnaires that assessed how excluded they felt.

The table and scatterplot show data for13subjects.

Subject	Social distress	Brain activity
1	1.36	?0.06
2	2	?0.031
3	0.97	?0.026
4	2.64	?0.018
5	2.03	?0.019
6	2.48	0.013
7	2.17	0.023
8	2	0.017
9	2.63	0.026
10	2.69	0.042
11	2.67	0.059
12	3.38	0.074
13	3.55	0.131

Question 8 of 14 S 3.38 0.074 3.55 0.131 Brain 0.15 activity 0.125 0.1 0.075 0.05 0.025 -0.025 1.5 Social distress explanatory variable is "social distress" measured by each subject's r inclusion. (So values greater than 1 show the degree of distress cau vity in a region of the brain that is activated by physical pain. Negativ cess. TE: Determine if there a relationship between social distress and bra