Reaction-time lab
Mon, Mar 22, 2027 · Week 10 · Human Anatomy & Physiology (Human Body Systems)
Today's goal: Measure reaction time under different conditions and record the data.
What a finished product looks like
This is a model of the work you should turn in today. Use it to check your own: match the structure and the level of detail, do not copy it. Your data and wording should be your own.
Method: ruler-drop, distance converted to time in milliseconds. Five trials per condition.
Baseline condition (no distraction):
- Trial 1: 210 ms
- Trial 2: 195 ms
- Trial 3: 205 ms
- Trial 4: 380 ms (flagged outlier: fumbled catch, excluded)
- Trial 5: 200 ms
Baseline average (excluding outlier): 202.5 ms
Distraction condition (counting backward aloud):
- Trial 1: 265 ms
- Trial 2: 280 ms
- Trial 3: 255 ms
- Trial 4: 270 ms
- Trial 5: 260 ms
Distraction average: 266 ms
Which was slower: the distraction condition was slower by about 63.5 ms.
| Trial | Baseline (ms) | Distraction (ms) |
|---|---|---|
| 1 | 210 | 265 |
| 2 | 195 | 280 |
| 3 | 205 | 255 |
| 5 | 200 | 260 |
| Average | 202.5 | 266 |
Also due today: Submit your completed data table.
WebXam problem for today's skill
One exam-style question that uses exactly what you practiced today. Try it before you reveal the answer, then read why each choice is right or wrong.
Tap an answer to see the full explanation. Nothing is recorded or graded.

