Important job!! Hi guys! I need help for a job. Can somebody correct my text,please? The signal detection theory (SDT) emerges in contrast to the term "absolute threshold" of psychophysics, introducing this emotions as one of the main variables. Because of this the present work is focused on the SDT to investigate the possible relationship of a particular emotional state carrying out in this task. Generally we thought that fear has negatively affects in the performance of any task. We want to find out if in signal detection tasks this topic is met. So we've used two experimental groups and one control, but unlike we expected the results confirm us that emotions affect the completion of these tasks although no significant difference between the two moods.