Question

The Emer Related Negativity (ERN) is a negative ERP component that peaks around 80- 100 ms after the participant makes an error Chang, Davies & Gavin (2009) wanted to investigate whether the ERN is affected by Attention Deficit Hyperactivity Disorder (ADHD). They compared a group of college students who had ADHD to a control group who did not have ADHD. Here is part of their results. The solidnine Here is part of their results. The solid line represents the ADHD group, the dashed line represents the control group. The vertical line shows the time when the participants made the error (pressed the wrong button). Positive is upward. -500 -400 - 200 0 200 400 600 800 time (milliseconds) Questions: 1. Circle the approximate location of the ERN above. 2. Is the ERN amplitude larger, smaller or about the same in the ADHD group compared to the control? Circle one: Larger Smaller The same 3. Draw on the graph below how you can tell whether the amplitude is larger, smaller or the same. FC2 ) -600 400 -200 0 200 400 600 800

please help!

Answer 1

200

1. The ERN is located in the area of the diagram within the pink box drawn in Figure

2. ERN amplitude is smaller in ADHD group compared to control.

3. Please refer to the first figure in which red line indicates the   amplitude of ADHD it is smaller when compared to control

group peak

4. ERN latency is shorter in ADHD group than in control

5. ERN latency is smaller shown by blue line or dot when compared to control dotted line