Pamantasan ng Lungsod ng Maynila
College of Human Development
Department of Psychology
In partial fulfillment to the requirements
In Experimental Psychology
Laboratory Report numbers 1, 2, & 3
In Experimental Psychology
Jake Hilson C. Lapira
BS Psychology 3-1
Prof. Mary Easter Claire Perez-Torres
People do not think or act instantaneously. The time required to take action depends systematically on mental and physical processes that precede an overt response. Thus throughout the areas of psychology, conclusions about the nature of mind and body have been based onmeasurements of human reaction time. Past uses of reaction time data extend from studies of elementary sensory mechanisms (e.g., Green & Luce, 1973) to studies of perception (e.g., Garner, 1962, 1970). Reaction time has a been a favorite subject of experimental psychologists since the middle of the nineteenth century (reviewed in Deary et al., (2011)). Beginning in 1865, F.C. Donders became interested if the time taken to perform basic mental processes could be measured. In his early experiments, Donders applied electric shocks to the right and left feet of his subjects. In one of his experiments, he did two trials with different conditions. In the first trial, subjects were not aware which foot will be shocked while in the second trial, subjects were aware. He found out the difference between the two by 1/15 second. This represented the very first time that the human mind was measured. Moreover, by 1842, a Swiss watchmaker named Mathias Hipp had improved on Wheatstone's design - a device for measuring the velocity of artillery shells - and began selling an instrument which used a tuning fork-like spring which vibrated at 500 Hz to repetitively engage the teeth of a wheel and thus regulate the speed of revolution of the wheel. Later models of his 'Hipp Chronoscope' had vibrating regulators which vibrated at 1000 Hz. This improved their accuracy.
This Simple Reaction Time Experiment purposed to To acquaint the students in reading laboratory primers and organize data into summaries and graphs. A third year BS Psychology student in Pamantasan ng Lungsod ng Maynila was used as a subject in the given experiment. Before performing the experiment, the experimenter explained thoroughly and gave instructions carefully to the subject how he/she going to conduct the experiment. For this experiment to be executed, it needs a stopwatch, a paper and a pen. The experiment contains two parts: Part 1 & Part 2. In the first part of the experiment , the subject cues the experimenter to start the timer and does a free association or he/she should talk and estimate it with a 12-seconds interval each trial. For every estimated 12-seconds-interval, the subject cues the experimenter to stop the timer when she/he feels she/he covered a 12 seconds talk. Then it should be performing for 45 trials. After the first part of the experiment covering free association for 45 trials, the second part of the experiment should be executed.The part 2 have also the same instruction with the first part but this time, there would be no free association should be conducted.
Table 1. Estimated 12-second-interval Time
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