SIMPLE REACTION TIME
SIMPLE REACTION TIME
Objective
To acquaint the students in reading laboratory primers and organize data into summaries and graphs.
Introduction
Apparatus Required
Stopwatch, Meter Stick.
Procedure
Part – I
Select your laboratory partner and toss a coin to determine who will be E and S.
S holds the timer with preferred time. At E’s go signal, S starts the timer and must talk of free associate while making an estimate of 12 second interval. E records the estimate in Table I. S should not see the face of the timer or the data being recorded. Perform 45 trials. Then E and S change roles. Make 10 trials for the second subject.
Part – II
Repeat the above procedure but this time with the timer facing the S and no free association is required. Perform 45 trials. Then E and S change roles. Make trials for the second subject.
Subjects:
The subject is selected by Snowball Sampling. We carried on the Within-Subject Design and performed the experiment. Subject criteria is as follows:
Age: 19
Sex: Male
Education: College student
The subject is given informed consent about the experiment. The subject also agrees with the experiment.
Hypothesis:
H0 : There is NO significant difference in the estimated and reaction time.
H0 : Mean1 = Mean 2
Ho : Estimated Time = Reaction Time
Results:
Table:
For the SUBJECTS: PART - I
Histogram:
This is used to see the graph whether it is like a normal curve.
Shapiro-Wilks Test:
> shapiro.test(Dataset$SEstimated)
Shapiro-Wilk normality test data: Dataset$SEstimated
W = 0.9436, p-value = 0.0292
> shapiro.test(Dataset$SReaction.Time)
Shapiro-Wilk normality test data: Dataset$SReaction.Time
W = 0.3868, p-value = 1.829e-12 As the p-value is less than 0.05, we reject the null hypothesis that the data is not in normal distribution.
Box Plots: From this graph, we can predict the outlier in the data. From removing the outlier the data may become normal. After removing the outliers, I made retest with the rearranged data.
Objective
To acquaint the students in reading laboratory primers and organize data into summaries and graphs.
Introduction
Apparatus Required
Stopwatch, Meter Stick.
Procedure
Part – I
Select your laboratory partner and toss a coin to determine who will be E and S.
S holds the timer with preferred time. At E’s go signal, S starts the timer and must talk of free associate while making an estimate of 12 second interval. E records the estimate in Table I. S should not see the face of the timer or the data being recorded. Perform 45 trials. Then E and S change roles. Make 10 trials for the second subject.
Part – II
Repeat the above procedure but this time with the timer facing the S and no free association is required. Perform 45 trials. Then E and S change roles. Make trials for the second subject.
Subjects:
The subject is selected by Snowball Sampling. We carried on the Within-Subject Design and performed the experiment. Subject criteria is as follows:
Age: 19
Sex: Male
Education: College student
The subject is given informed consent about the experiment. The subject also agrees with the experiment.
Hypothesis:
H0 : There is NO significant difference in the estimated and reaction time.
H0 : Mean1 = Mean 2
Ho : Estimated Time = Reaction Time
Results:
Table:
For the SUBJECTS: PART - I
Histogram:
This is used to see the graph whether it is like a normal curve.
Shapiro-Wilks Test:
> shapiro.test(Dataset$SEstimated)
Shapiro-Wilk normality test data: Dataset$SEstimated
W = 0.9436, p-value = 0.0292
> shapiro.test(Dataset$SReaction.Time)
Shapiro-Wilk normality test data: Dataset$SReaction.Time
W = 0.3868, p-value = 1.829e-12 As the p-value is less than 0.05, we reject the null hypothesis that the data is not in normal distribution.
Box Plots: From this graph, we can predict the outlier in the data. From removing the outlier the data may become normal. After removing the outliers, I made retest with the rearranged data.
References: Lipps, D.B.; Galecki, A.T.; Ashton-Miller, J.A. "On the Implications of a Sex Difference in the Reaction Times of Sprinters at the Beijing Olympics". Whelan, R. (2008). Effective analysis of reaction time data. The Psychological Record Documentation: Group Members: Viknesh, Natarajan. Soundariyan, Kathirvel. Jeba Shibana, Jean Singh. Verma Roshni Rajan. Subashini, Subramanian. Abisha, Nataraj.