Research on Reaction Time

We conduct an independent sample t-test using Excel, and obtain the following output (see t-test-height)

In experiment 1, participants were instructed to press a key to determine if the stimulus was red, blue, yellow, or green. On the second half of the experiment, the stimulus appeared in grey with only one colored letter which was positioned randomly. Error rates for the experiment were below 2.5% for each condition, which is quite low. Experiment 2 was the same as experiment 1 except that there were 114 data collections instead of 288 and there were 36 practice trials instead of 72. According to experiment 1 and 2 it is suggested that the effect of

1. Form hypothesis: Do you think you will react more quickly to sights or sounds? Explain why.

The reaction timer from Maths Is Fun (2014) is specific to three decimal places. The accuracy of the chosen source reduces the risk of statistical measures being slightly greater or less than they would be if only one or two decimal places were provided. Unlike other reaction timers that are available online, this particular source requires the subject to complete five trials before the mean is calculated. Undertaking multiple trials will be vital to this investigation because if the subject was to anticipate the event or have one delayed response, the trials that follow would reveal such errors, therefore increasing the reliability of the results.

Reflexes are the body's reaction something, reflexes are signals that are sent from your neurans to your brain and your brain processes the information then responds. To test if the difference between voluntary and involuntary effects the reaction time. In this lab the voluntary reaction time was the time between when the hammer hit the table and when the leg moved. The involuntary reaction time in this lab was the time between the time when the hammer hit the knee and the time where the leg moved.

One-sample t-test are used in the parametric test which analyzes the means of populations. The t-test for independent groups are statistics that relates difference between treatment means to the amount of variability expected between any two samples of data within the same population (Hansen & Myers, 2012). Critical values are used in significant testing provide a range of t distribution that is used in whether a null hypothesis is rejected. Based on the data below as the level of significance is at .05, thus the critical values would fall under ±1.860 and the t value for this is 1.871 would suggest for the null to be rejected as it is greater than the critical value (Privitera, 2015, p. 267). Based on the population mean of 70 there was a mean difference of

The trials for each of the six conditions were presented in a random order. The experimenter controlled for differences among participants by having them set their own equiluminant point for the cue stimuli and eliminated luminance differences by embedding the stimuli in a random luminance noise. The experimenter also controlled for outliers by eliminating response

| Based on explicit knowledge and this can be easy and fast to capture and analyse.Results can be generalised to larger populationsCan be repeated – therefore good test re-test reliability and validityStatistical analyses and interpretation are

Additionally, this study does not include a justification for why this particular analytic method was used and there was no control on confounding variables. It is important to include confounding factors and how they were controlled because this can lead to bias and incorrect results.Type I and II occurs when there is a null hypothesis. There was no mention of a null hypothesis and no mention of avoidance or minimizing Type I and II

The time to respond an object while imagining it in rotation: The subject is instructed to imagine an object being rotated in certain direction. During this process of mental rotation subject is presented with a test object and the subject has to tell whether the object is standard or reflected. Cooper and Shepard conducted an experiment where a character was represented in 6 different orientations according to the auditory command. When the object was represented in same orientation as to the auditory command the discriminative reaction time was short but if the orientation was not the same to the auditory command then reaction time increased linearly. Similar experiment was performed by Metler but in this experiment 3-D pictures were shown

Introduction The purpose of this experiment was to find out whether or not an individual’s reaction time was affected by his/her dominant or non-dominant hand. Our group was interested in investigating whether or not hand dominance plays a role in a person’s reaction time. According to Helms et al. (1998) reaction time is defined as the length of time it takes to begin a response to a stimulus. There have been three basic kinds of reaction time experiments named (Luce, 1986; Welford, 1980).

The results from this study only reflect a very small number of the population, so it is difficult for this experiment to show any significant results. It would have reflected better on the results if the sample size had been meet, however it was not possible due to lack of time and number of eligible volunteers.

In this case, level of significance, α was not provided. Therefore, the analysis will be evaluated based on two α values which are:

The reaction time (RT) of students was measured in the experiment to determine whether light or sound stimulus initiates a quicker response time. The question of whether or not RT was related to movement time (MT) was also challenged. Each student performed two test in random order; one testing the reaction time of a red light stimulus, or visual reaction time (VRT); and the other testing the reaction time of a “beeping” sound stimulus, or auditory reaction time (ART). The student completed the VRT trial by simply receiving the stimulus and pressing a button. The student placing and holding their hand on a button starts the ART trial. Once the student receives the stimulus (beep) they press the adjacent button as fast as they can. The ART trial does not only include the data of the RT, but also the data from the MT. Having previous knowledge that light travels faster than sound; one can predict that VRT is faster than ART. The prediction that MT is independent upon RT can be made with the thought that there are so many opposing variables that could affect the MT of an individual unrelated RT such as old age

We are replicating J.R. Stroop’s original experiment The Stroop Effect (Stroop, 1935). The aim of the study was to understand how automatic processing interferes with attempts to attend to sensory information. The independent variable of our experiment was the three conditions, the congruent words, the incongruent words, and the colored squares, and the dependent variable was the time that it took participants to state the ink color of the list of words in each condition. We used repeated measures for the experiment in order to avoid influence of extraneous variables. The participants were 16-17 years of age from Garland High School. The participants will be timed on how long it takes them to say the color of the squares and the color of the words. The research was conducted in the Math Studies class. The participants were aged 16-17 and were students at Garland High School. The results showed that participants took the most time with the incongruent words.