Spearman’s rank order correlation coefficient
• P: I used Spearman’s Rank Order Correlation Coefficient to analyse the relationship between screen time and Stroop test performance in correlational research
• E: test was appropriate because data was ordinal - screen time and reaction time differences could be ranked, but not assumed to be interval or normally distributed. Given likelihood of non-normal distribution in reaction time data, a parametric test like Pearson’s would have been unsuitable
• E: spearman’s rho measures the strength and direction of a monotonic relationship without assuming normality, making it ideal for my data set. Allowed me to assess whether higher screen time was associated with slower Stroop performance
• L: therefore, spearman’s rho was most statistically appropriate and valid test for identifying any correlation between my 2 variables
