Preview

Effect Of The Congruence Of Large

Best Essays
Open Document
Open Document
1943 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Effect Of The Congruence Of Large
Effect of the Congruence of Large Letter and Small Letter of Reaction Time
UNIMKL- 012480
University of Nottingham Malaysia Campus

Abstract:
This study is a replication of Navon’s (1977) Task which was Forest before Trees: The Precedence of Global Features on Visual Perception. Based on Navon’s (1977) experiment, figures of large letter that built up from small letter either congruent or incongruent were presented to the participants and asked to identify the local stimulus (Navon, 1977). The purpose of the experiment was to determine whether global stimuli affected the reaction time in determining local stimuli when the conditions were incongruent. There were fifty- eight undergraduate students participated in the study which was an opportunity sample. As the experiment conducted in Teaching Computer Room 2, therefore it was a laboratory experiment of a repeated measure design. The results showed that the reaction time in determining local stimuli for incongruent figure took longer time than the reaction time for congruent figure. From the results, it was concluded that the local processing was affected by the global processing.
Keywords: global features, global and local processing, visual perception, global precedence

Effect of the Congruence of Large Letter and Small Letter of Reaction Time
The continuous debate on the capability of humans in order to perceive and response when the local stimuli and global stimuli are congruent were always become an issue among psychologist. Based on the bottom- up processing theory, the whole is built from its individual elements that further proposed that the individual detect the local stimuli initially before perceiving the global stimuli. This would imply that the individual’s capability to detect the local stimuli should not be affected by the global stimulus (Kinchla & Wolfe, 1979). This theory was then supported by Gestalt psychology in which proposed the Law of Pragnanz. According to Gestalt

You May Also Find These Documents Helpful

  • Satisfactory Essays

    The reaction time reported with our experimental results is to show how long and difficult that it took to identify the scene change.The slower the reaction time ,the more difficult to identify the scene change.…

    • 411 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Bitchess Trippin

    • 2120 Words
    • 9 Pages

    Seminar Teaching Assistants Name Anne Marie Levy Thomas Sasso Jasmine Mahdy Melissa Bell Chris Upton Dan van der Werf Jeff Franson Julia Wreford Course overview Description: The overall theme of this course is the examination of human behaviour and mental processes using a scientific approach. It will survey some of the major areas of the field such as neuroscience, sensation and perception, learning, cognition, motivation, human development, personality, psychopathology, and social psychology. Lectures: Seminars: Tuesdays & Thursdays 16:30-17:20, Rozanski Hall (ROZH) 104 As assigned on your timetable. • You must attend the seminar for which you are registered, unless you made arrangements with your TA to attend another one of his/her seminars. • PSYC*1000*XXXX, where XXXX is your seminar section number Seminar Sections 0464, 0465, 0479, 0480 0461, 0467 0463, 0470 0471, 0478 0466, 0474 0472, 0473 0462, 0468 0469 E-mail a.levy@psy.uoguelph.ca t.sasso@psy.uoguelph.ca j.mahdy@psy.uoguelph.ca mbell01@uoguelph.ca c.upton@psy.uoguelph.ca d.vanderwerf@psy.uoguelph.ca j.franson@psy.uoguelph.ca j.wreford@psy.uoguelph.ca…

    • 2120 Words
    • 9 Pages
    Satisfactory Essays
  • Powerful Essays

    Humphreys, G. W. & Bruce, V. (1989). Visual Cognition: Computational, experimental, and neuropsychological perspectives. (pp. 89-101). East Sussex: Lawrence Erlbaum Associates.…

    • 1945 Words
    • 8 Pages
    Powerful Essays
  • Good Essays

    The experiment tries to show that people can not only create images but also mentally transform them. They present the subjects with two 3D line-drawing of random block shapes. The subjects are asked to decide if the two images are the same object by pressing two different keys on the keyboard. In some cases the two images are the same object with one rotated by some degree. In other cases the two images are mirror images that are similar but not identical. The mirror images are also rotated sometimes. The dependent variable is the reaction time. The independent variables are stimuli that have the same shapes vs. stimuli that have different shapes, and the degree of rotation. The control conditions are the multiple trials and the selection of only correct responses. The hypothesis is that if the reaction time is affected by the degree of rotation of the images, subjects perform the task by mental rotation of the drawings because it takes time to rotate the mental images just like real images. The result shows that the reaction time is indeed affected by the degree of rotation; therefore, it demonstrates the hypothesis that people can mentally rotate images. It takes more time for subjects to react when the degrees of rotation increase. There are some methodology problems in this experiment design. First, the block-shape 3D images are hard to identify even one at a time for some people and the test only takes correct answer into consideration. The repetition of the tests may cause fatigue to some subjects and the correct answers can be generated by random clicking of images. Second, the block-shape objects are not something that we can encounter in the real life so the subjects may have to take extra effort to analyze the images. Finally, the correct answer can be derived by ways other than mental rotation. For example, you can simply just find a starting point of the block-shape images and ‘walk through’ the images to see if the two images have the same ‘route’…

    • 447 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    Name the topic of this paper and define key terms such as perception and perceptual errors.…

    • 301 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    On arrival, participants and the two observers entered the room and had the participant sit down in front of a desk. Participants received instructions orally and were asked if they had any questions before we continued with the experiment. The instructions listed each participant to name the shape of each item and avoid reading the word within the shape. Participants were asked to begin at the top left corner of the page and move left-to-right, row by row. In congruent shape trials, each shape matched the word within the shape. In incongruent shape trials, the shapes did not match the word within the shape. They were asked to repeat this task six times. Additionally, to control order effects, we counterbalanced the experiment by alternating trials for each condition. The condition that was tested first was the congruent trial, followed by the incongruent trial and it kept alternating in this manner. It was asked that participants should not hold the paper but were allowed to point at the paper on the table with their fingers. If participants felt stuck, they were instructed they may “skip” and move to the next shape. When the participant finished each task, the observer was to record the seconds it took for participant to finish naming the shapes. For each of the fifty-eight participants, their three congruent and three incongruent scores were to be averaged…

    • 584 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Describe the contributions to society of the Cognitive and Psychodynamic Approaches, and compare the two approaches in terms of their scientific status (18)…

    • 913 Words
    • 3 Pages
    Good Essays
  • Better Essays

    Green, D. M., & Swets, J. A. (1966). Signal detection theory and psychophysics. New York: Wiley.…

    • 8510 Words
    • 35 Pages
    Better Essays
  • Powerful Essays

    Figure Ground

    • 3992 Words
    • 16 Pages

    ambiguous figures and then presented with the target figures. The result demonstrated above-chance level of consistency between the prime and the choice of the figure. From this result, it was concluded that subliminal priming of the figure had effects on figure-ground organization. Introduction In the investigation of visual perception, Gestalt psychologists made an indispensable contribution by asserting that perceptual processes were not simply determined by separate elements in visual stimuli (Peterson, 1999; Mack, Tang, Tuma, Kahn, & Rock, 1992). Those elements are not…

    • 3992 Words
    • 16 Pages
    Powerful Essays
  • Powerful Essays

    The Mind-Body problem

    • 1454 Words
    • 4 Pages

    This concept is one of the deepest and most lasting legacies in the history of psychology. It is a crucial concept because it is through studying the history of psychology that one is able to gain perspective and a deeper understanding of modern psychology. By studying the history of this field and understanding the approaches from different philosopher’s, modern psychology can dissect previous mistakes and try to avoid them. Another benefit that comes from studying the history is the formation of new ideas that can be discovered and the natural curiosity that arises from something thought to be important (Hergenhahn, 2009, p. 23).…

    • 1454 Words
    • 4 Pages
    Powerful Essays
  • Good Essays

    Automatic processes require little conscious awareness and mental effort and are used when an activity is easy or familiar (Grivas, et al, 2010). J. Ridley Stroop (1935) found that participants were slower to perform a task and made more errors when they were asked to visually process incongruent information, this is information which is conflicting (Grivas, et al, 2010). Participants had difficulty naming the colour of the ink if the word was different to the colour. This is now known as the Stroop effect and is the observation that it takes longer to name the colour of the ink in which a word is printed if the word spells a different colour than it does to identify a block of colour (Grivas, et al, 2010). In the current study, it is predicted that participants will take more time and make more mistakes when they are required to visually process incongruent information, compared to when they are presented with congruent information and very few mistakes are made and in a much quicker time. Participants were recruited from Cathedral College Wangaratta on the basis of convenience and were required to stand approximately 5 meters away from the screen and read out the…

    • 752 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    3b Mental Rotation

    • 297 Words
    • 2 Pages

    The results showed the typical effect of mental rotation on response times. There were moments when I could not tell if the shapes were different or the same. As when a rotated object is presented to us, we mentally tend to turn it into its usual position. We first rotate it mentally until it is placed vertically,…

    • 297 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    Perceptual Set

    • 1445 Words
    • 6 Pages

    The aim of this study was to further investigate whether the interpretation of an ambiguous stimulus is influenced by immediate past experience, and, therefore, by the establishment of a perceptual set. It is based on an experiment conducted by Bugelski and Alampay (1961).…

    • 1445 Words
    • 6 Pages
    Powerful Essays
  • Satisfactory Essays

    Sensory Perception

    • 773 Words
    • 3 Pages

    The paper will discuss sensory perception that asks the question can you really trust your senses and the interpretation of sensory data to give you an accurate view of the world. What are the accuracy and the weaknesses of the human senses as they pertain to thinking in general and to your own thinking in particular?…

    • 773 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    The fixation point was a cross. with a point size 18, and last for 250 ms. For each stimulus, a word was appeared immediately at the centered relative as same as the fixation point; on a font equivalent to Times New Roman 18 point. The on-screen width of each stimulus (i.e. both dimensions) together with participants seated approximately 60 cm from the screen, resulted in stimuli subtending a horizontal visual angle of around 3° and 20’ and a vertical visual angle of 4° and 12’.…

    • 855 Words
    • 4 Pages
    Good Essays