In the experiment in which college students breathed air with increased amounts of carbon dioxide through a mask, the students found it much MORE stressful if they
A) were surprised by the trials that contained the increased amount of carbon dioxide.
B) were told which trial would contain an increased amount of carbon dioxide.
C) could control the amount of carbon dioxide entering the mask.
D) experienced repeated trials of increased amounts of carbon dioxide that were each announced before occurring.

Question

Quizplus · Accepted Answer

When students were surprised by the trials with increased carbon dioxide, they found it more stressful due to the lack of anticipation and preparation for the stressful event.

In the Experiment in Which College Students Breathed Air with Increased