What tools does Sato frequently employ in data collection for his research?

The correct answer highlights a combination of data collection methods that are well-suited for research focusing on behavioral and cognitive processes. Surveys allow researchers to gather quantifiable data from a large sample, enabling the analysis of trends and patterns. Cognitive tests are specifically designed to assess mental functions, providing insights into the cognitive abilities and considerations of subjects. Observation methods complement these by enabling researchers to watch participants in real-time, offering qualitative data and context that might not be captured through surveys or tests alone.

This combination is effective because it balances quantitative and qualitative approaches, providing a more comprehensive understanding of the subject matter. It's particularly beneficial in research designs where understanding human behavior and cognitive functions are central, allowing for both statistical analysis and deeper insights into participant behaviors.