IAT804 – Assignment 3a: Experimental Approaches

Assignment 3a: Experimental Approaches (5%)

You have been tasked with conducting an experimental study that explores if a game-based neurofeedback application can effectively support people to improve their ability to self-regulate their attention used as an intervention in a single session. This study uses a mixed within-between experiment. The independent variables are intervention/control group (between groups) and assessment time point (within groups). One group of participants used the real neurofeedback application and the second group (control) used a sham version of the neurofeedback application. The dependent variables include a two part attentional test, the average “attentive” brainwave values during game play, and a self-report survey. Measures were administered at different time points in the study.

You will review the background of the study, including the context and the research problems, the specific data collection methods used, the analysis procedures, and the analysis. You will write and interpret the results in light of four hypotheses and write a discussion and conclusion.


1. Read the paper, familiarize yourself with main research question, four hypotheses, and independent and dependent variables.

  • The introduction, related work, and part of the study methods sections of a paper describing your experimental study – (Word filePDF file)
  • An export of the Zotero references library for the paper (rdf file)
  • web site about the neurofeedback system
  • A video of the Stones sustained attention game.
  • A video about the SART attention test.

2. Review the data analysis plan. Make sure you are clear on which data is used to address which hypothesis.

  • The study design and data analysis plan document. (PDF)

3. Import the data into the statistics package(s) you are using (Excel, Open Office, SPSS, JMP, etc.). Create exploratory plots for each hypothesis. 

  • You can download SPSS and JMP or use it on a campus PC.
  • The cleaned up Excel data files for all four dependent variables in SPSS and JMP formats
    • Headset Data – SPSS and JMP
    • SART Test – Errors of Omission and Commission – SPSS and JMP
    • Surveys – SPSS and JMP

4. Review the output files looking for evidence to address each hypothesis.

  • The statistical analysis output – SPSS and PDF

5. Write a short results section for your findings (max. 3 pages) structured by hypotheses. Each hypothesis should be addressed in its own subsection and include descriptive and inferential results that provide evidence to support or refute the hypothesis. Include graphs with error bars to show significant results.

6. Write a short discussion section (max. 1 page) for your findings where you synthesize the results to address the overarching research question, providing an assessment of the effectiveness of the neurofeedback application as it was used in this intervention. Include a brief discussion of limitations.

7. Write a short conclusion providing the main contribution of the work, and suggestions for future work.


  • 3% Results:
    • results reporting for H1-4 (2%)
    • graphs for hypotheses (1%)
  • 1.5% Discussion
  • 0.5% Conclusion


Create a paper that contains the write-ups from above. You should use the same format as the start of the paper, which is given above. Submit a paper copy in class.

Assignments over the word/page limit will receive a penalty of 10% or only be graded up to the word/page limit, at the discretion of the instructor.


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