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The Effect of Visual Field Position and Type of Stimuli on the Stroop Effect

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Abstract

An experiment was conducted to test the effect of lateralization and congruency on reaction time to name colors. This was done using a computer program provided by The University of Mississippi. This effect is called the stroop effect. Results showed that it was neither lateralization nor congruency had a significant effect on reaction time, but the interaction of these two variables that created a significant change in the time needed to recognize colors. It is believed that this is due to the different hemispheric functions of the brain. Studies that are similar to this in nature help to better understand how the brain functions and it capabilities.

The Effect of Visual Field Position and Type of Stimuli on the…show more content…
The time to name congruent stimuli should be faster then the time to name incongruent stimuli. The time to name ink color will vary with both visual field position and type of stimuli. Time to name ink colors for congruent stimuli should not vary much with visual field but the time to name ink color of incongruent should increase as the stimuli gets color to the right visual field.
Methods

Participants
This study contained a total of fifteen students from the University of Tampa’s upper level psychology class. Thirteen of the participants were female and the remaining two were male. In addition to this class thirty six students from other classes were also used in this study.

Materials
I-Mac G3 computers and a program from Old Mississippi University were used to test the lateralized Stroop effect from http://psychexp.olemiss.edu. The name of the actual program was the Lateralized Stroop Experiment. The stimuli used by this program were colors that appeared laterally on a computer screen. Not only did the colors appear laterally but in differing hemispheres on the computer screen. The colors were in the form of written words. For example the word “red” was shown in green font. This was be an example of an incongruent stimulus because the written color word did not agree with the font color shown. An example of
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