A researcher repeatedly observes children with and without autism spectrum disorder (ASD) during recess. She notices that children with ASD are more likely to join in play with other children when the children without ASD initiate the social interaction. She concludes that there is a correlation between joining in play and who initiates the interaction. Which level of scientific understanding is the researcher using a) Descriptive analysis
b) Correlational analysis
c) Experimental analysis
d) Causal inference