Researchers who measure reaction time for human participants often observe a relationship between the reaction time scores and the number of errors that the participants commit. This relationship is known as the speed-accuracy trade-off. The following data are from a reaction time study where the researcher recorded the average reaction time (milliseconds) and the total number of errors for each individual in a sample of n = 8 participants. X Reaction Time Errors A 184 10 B 213 6 C 234 2 D 197 7 E 189 13 F 221 10 G 237 4 H 192 9 Part A. Compute the Pearson correlation for the data. Part B. In words, describe the speed-accuracy trade-off. Compute the correlation in part A, but then answer part B from these choices: A)there is a perfect relationship between reaction time and number of errors B) there is a strong tendency for longer reaction times to go along with fewer errors C) there is zero relationship between reaction time and number of errors D) there is a strong tendency for longer reaction times to go along with more errors
Researchers who measure reaction time for human participants often observe a relationship between the reaction time scores and the number of errors that the participants commit. This relationship is known as the speed-accuracy trade-off. The following data are from a reaction time study where the researcher recorded the average reaction time (milliseconds) and the total number of errors for each individual in a sample of n = 8 participants.
|
X |
Reaction Time |
Errors |
|
A |
184 |
10 |
|
B |
213 |
6 |
|
C |
234 |
2 |
|
D |
197 |
7 |
|
E |
189 |
13 |
|
F |
221 |
10 |
|
G |
237 |
4 |
|
H |
192 |
9 |
Part A. Compute the Pearson
Part B. In words, describe the speed-accuracy trade-off.
Compute the correlation in part A, but then answer part B from these choices:
A)there is a perfect relationship between reaction time and number of errors
B) there is a strong tendency for longer reaction times to go along with fewer errors
C) there is zero relationship between reaction time and number of errors
D) there is a strong tendency for longer reaction times to go along with more errors
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