I don't know much about dog behavior, but I took enough science classes in high school and college to know that all this experiment shows is that dogs don't go get help when their owners are PRETENDING to be in distress. Could the dogs tell they were pretending? Would the dogs be better at detecting whether their owner (vs. a stranger) was in distress? Would the dogs get help if there was really a problem? Interesting questions, but ones that are going to require different experiments to answer.