Measuring the impact of screen polarity on human typing speed and cognitive accuracy.
This study investigated whether display polarity significantly affects typing performance. While the hypothesis predicted superior results in Light Mode due to higher contrast, statistical analysis via a paired t-test revealed no significant difference in speed or accuracy between modes ($p > 0.05$). Subjective feedback suggested that performance is heavily influenced by individual preference and confirmation bias rather than physiological optic response alone.
"Participants will exhibit faster typing speed and higher accuracy in Light Mode compared to Dark Mode."
Results are not statistically significant. The null hypothesis is retained.
Beyond the metrics, observational data revealed strong cognitive biases. Participants displayed varying levels of performance anxiety despite the low-stakes environment.
Crucially, elements of Confirmation Bias were observed: participants unintentionally exerted more effort on their pre-established "preferred" display mode to achieve desired outcomes.
While data showed a marginal advantage for Dark Mode in both speed and accuracy, the lack of statistical significance rejects the initial hypothesis.
Future scaling with larger sample sizes is required to separate genuine physiological advantages from subjective environmental factors and learned behaviors.