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Science · Drill 11

Science practice 11

15 questions ~9 min recommended
⏱ 00:00
Score
—

Trial12345

Response Time (ms)
158 ms
154 ms
152 ms
144 ms
142 ms
143 ms

Tone Length (ms)
200 ms
200 ms
200 ms
400 ms
400 ms
400 ms

Trial12345

Response Time (ms)
145 ms
142 ms
142 ms
193 ms
189 ms
188 ms

Stimulus
Auditory
Auditory
Auditory
Visual
Visual
Visual

Trial13456

Response Time (ms)
143 ms
195 ms
152 ms
199 ms
151 ms
199 ms

Stimulus
Auditory
Visual
Auditory
Visual
Auditory
Visual

23456789101112131415

A student wanted to test human reaction time to different stimuli to determine the conditions that cause the fastest reaction. The student conducted three experiments to test reaction time.

Experiment 1

The student used a computer program to record the time between the sounding of a tone and the student pressing the spacebar on the keyboard. This process was repeated 10 times per trial. The program then averaged the 10 response times to produce an average for the trial. The student conducted three trials using a tone length of 200 milliseconds (ms) and three trials with a tone length of 400 ms. Results are shown in Table 3.6.

TABLE 3.6 Experiment 1

Experiment 2

The student then used the same computer program to record the time between the sounding of a tone or the appearance of an image on the screen and the student pressing the spacebar. This process was repeated 10 times per trial, with the computer again averaging the 10 response times for each trial. The student conducted three trials using the tone as the stimulus and three trials using the image. Each stimulus lasted for a duration of 400 ms. Results are shown in Table 3.7.

TABLE 3.7 Experiment 2

Experiment 3

The student repeated the previous experiment but alternated the stimulus (tone versus image) with each trial. Results are shown in Table 3.8.

TABLE 3.8 Experiment 3

1. In the three experiments, response time is measured as the time between:

2. The stimulus in Experiment 1 was the:

3. How do Experiments 2 and 3 differ?

4. Based on the data in Table 3.7, the sense of hearing is:

5. A stimulus duration of 400 ms was used during which experiment(s)?

6. The fastest reaction time occurred in response to:

7. Based on the data in Table 3.6, what is the relationship between reaction time and length of stimulus exposure?

8. Scientists have found that it takes 20-40 ms for a visual signal to reach the brain. Based on the data in Experiments 2 and 3, how long can an auditory signal be expected to take to reach the brain?

9. The data in Tables 3.7 and 3.8 best support the conclusion that alternating between two stimuli:

10. Scientists have found that a specific response time range exists for each particular sense. Which of the following would be the range for auditory stimuli?

11. How many total responses were recorded during Experiment 2?

12. Which graph best represents the data collected during Experiment 3?

13. The student wants to test how varying the length of exposure to a visual stimulus affects response time. The best way to do this is to repeat:

14. What was the slowest auditory response time recorded during the three experiments?

15. Based on the data from the three experiments, what can be done to improve response time?

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