Student name: Kristijan Kristic
Candidate number: 1466-008
Type of Study: Experiment
Subject and Level: Psychology SL
Date of Submission: 14th December 2010
Word count: 1498
Table of contents
APPENDIX I- Consent form12
APPENDIX II- Briefing13
APPENDIX III- Debriefing14
APPENDIX IV- Condition 115
APPENDIX V- Condition 216
APPENDIX VI- Condition 317
APPENDIX VII- Data and Calculations18
The aim of research was to study automatization process that was performed in the study by John Ridley Stroop and named Stroop effect. In this experiment random sampling technique was used to determine twelve participants from American International School of Zagreb. By performing repeated measure design, participants were all under same conditions in the quiet room where they performed three different tasks, each participant separately. All tasks were timed separately and mistakes were counted. Participants were given consent forms and were briefed at the beginning and debriefed after the experiment. Later the results were processed and participants were informed about them. From the results it can be concluded that it took participants longer to identify the ink color of the words, in the third task, than to tell the color of the squares, in second task, or read the black words, in first task. Difference between reading the words and telling the ink of the words is 16.8 seconds, where the difference between telling the color of squares and telling the ink of the word is 13.0 seconds. It can be concluded that nature of automatization interferes with other tasks, which means that while trying to tell the ink of the words, the brain also performs an automatized process of reading the actual meaning of the word.
John Ridley Stroop (1935) demonstrated a Stroop effect that is interference of the names of colors and the colors stimuli itself. There were 14 male and 56 female participants who were college undergraduate students. In the experiments, J. R. Stroop conducted several variations of test for which three different kinds of stimuli were created. The first stimuli contained list of names of different colors written in black ink. The second stimuli had squares in different colors on a list of paper. J. R. Stroop in the first experiment used stimulus one, where participants had to read the written word and not the ink of the word. In second experiment when the squares were shown, the participant would have to say its color. Third experiment used stimulus one and two. This time participants had to state the ink of words not concerning the meaning of written word. For example the word "purple" was written in red, participants were required to say "red," but not "purple". Then in the fourth experiment, participants were tested in different stages of practice at the tasks and stimulus used in the first, second and third experiments, to account for the effects of association. J. R. Stroop found out that participants need more time to complete a color reading in the third experiment compared to the naming of the color of the squares and reading words in black ink. The conclusion is that interference was explained by the automation of reading. The mind automatically determines the semantic meaning of the word which is for example the word "red" and than mind thinks of the color "red". But the mind must override this first impression with the identification of the color of the word that is the ink of a color other than red, and that process is not automatized. Aim of experiment is to replicate and investigate the Stroop effect, and to conclude that behind that investigation is...