a group who

[arzgol]

Can I use who instead of that?


Subjects were divided into two groups. The first group who were accompanied by their friends showed higher physiological reactions to complete a task compared with the second group who took their pets with themselves.

Thank you for your reply.

[5jj]

Can I use who instead of that? Yes, but there are other things that need attention:

Subjects were divided into two groups. The first group, who were accompanied by their friends, showed higher physiological reactions to complete a task compared with the second group, who took their pets with themselves.

I don't know what you mean by the words I have underlined

[arzgol]

Subjects were divided into two groups. The first group, who were accompanied by their friends, showed higher physiological reactions to complete a task compared with the second group, who took their pets with themselves.


They had higher blood pressure, tachycardia when they had to do a complicated task when their friends were with them.


I had to be concise, since the prepartion time is limited in the exam. Could you please fix my sentence to sound proper English.


Thank you for your response.

[5jj]

Subjects were divided into two groups. The first group, who were accompanied by their friends, showed higher physiological reactions to after completeing a task compared with the second group, who took their pets with themselves.

I don't know if that is acceptable. I would prefer:
The first group, who were accompanied by their friends, had higher blood pressure after completing a (complicated task) than the second group, who took their pets with them.