Psychology experiment

Posted on by Leakey

The Stroop Effect was discovered in 1935 by a researcher named J. R. Stroop (MacLeod, 1991). It is a fascinating phenomenon in which the way we automatically process the meaning of words interferes with our ability to identify colors (Stroop, 1992). In this lab, you will experience the Stroop Effect by performing word and color identification tasks under three different experimental conditions: Identifying colors, identifying the names of colors, and identifying the color of the ink that a color word is printed in. You will perform ten trials in each of the conditions described above, and you will have three practice trials in each condition before you begin.

Below are more instructions for the paper. You need to perform the ten trials in each of the conditions explained above along with three practice trials. This paper must be at least three pages written and does not include the counting of the title page and reference page. THE PARTS OF THE PAPER MUST BE SECTIONED AND MUST INCLUDE A: TITLE PAGE, ABSTRACT (MUST BE A FULL SUMMARY OF THE PAPER), INTRODUCTION, METHODS, RESULTS, DISCUSSION SECTIONS. IT NEEDS BAR OR LINE GRAPHS AND THE TABLE I COPIED AND PASTED (FILLED OUT WITH RESULTS).

I AM ATTACHING THE DIRECTIONS IN A FILE JUST IN CASE AND I AM ATTACHING THE TEACHERS TEMPLATE WITH IS DISCRIPTIVE TO EACH SECTION. PLEASE DO THE EXPERIMENTS AND THE AMOUNTS OF TIME THEY ARE TO BE DONE, THIS IS IMPORTANT AND I NEED HELP HAVE WAY TOO MUCH MEDICALLY GOING ON AND CANNOT KEEP UP SO IF YOU CANNOT DO THIS PLEASE TELL ME BEFORE LAST MINUTE.

Instructions for Collecting Data

  1. Go to the following web address: https://www.psytoolkit.org/experiment-library/stroop.html[Click ‘Run the Demo’ on the left-hand side menu.] (PsyToolKit, 2018).
  2. Position your fingers on the ‘r’ – red, ‘g’ – green, ‘b’ – blue and ‘y’ – yellow.
  3. Once you press start, choose the letter for the color of the word (the color it is printed in).This may or may not be compatible/congruent with the actual work (e.g. the word red may be printed in red [compatible / congruent] – choose red or the word red may be printed in green [incompatible / incongruent] – choose green)
  4. After 40 trials, it will tell you the average milliseconds for the congruent trails and for the incongruent trials (when you got it correct). Enter these numbers on the data sheet provided with this lab.
  5. You should go through the entire process five times. Make sure to record the data for each of the five times you complete the task and you are now ready to write your lab report.

Instructions for Writing the Lab Report

  1. The introduction should include background on the Stroop Effect, the background/purpose of the lab report and the hypothesis.
  2. Complete the Table (see page 4).
  3. Present your data in either a bar graph or a line graph. Be sure to clearly label the axes of your graph and display the data for the number correct and the time required on the same graph. You may draw this graph by hand or use a graphing program like Excel or SPSS.
  4. Summarize the pattern of your results in a paragraph. In other words, what does your graph tell us?
  5. In the discussion section, be sure to answer each of the following questions:

What pattern of results would you expect to find if you exhibited the Stroop Effect? Is this what actually happened?
If you did not show the typical Stroop pattern, do you have any hypotheses about why you didn’t?
Did you find some conditions to be more subjectively difficult than others? Please elaborate.
Did you notice any trade-off between speed and accuracy? In other words, did you do better if you took more time?

  1. Write a few sentences explaining why the Stroop Effect occurs.
  2. Be sure to include an abstract that is a full summary of the entire paper. The abstract should be able to stand alone and describe the entire paper.
  3. Remember that the results section simply describes he observations and interpretations of the data are written up in the discussion section.

Include this exact table with your data in the Results section of your Lab Report

Table 1

Stroop Effect Lab Data

Condition

Congruent
Average Speed

Incongruent
Average Speed

Incongruent
Minus Congruent

Time (ms)

Time (ms)

Time (ms)

Take 1

Take 2

Take 3

Take 4

Take 5

Mean

(A MS Word file with this formatted table can be found on Blackboard with the directions.)

References

MacLeod, C. M. (1991). Half a century of research on the Stroop Effect: An integrative review. Psychological Bulletin, 109, 163-203.

Psy Toolkit. (2018). Stroop task. Retrieved from https://www.psytoolkit.org/experiment-library/stroop.html

Stroop, J. R. (1992). Studies of interference in serial verbal reactions. Journal of Experimental Psychology: General, 121(1), 15-23.

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