After developing a therapeutic technique for treating depression, you decide that you want to determine its effectiveness cross-culturally. You are having difficulty choosing the countries for your sample. Your colleagues in Canada, Bulgaria, and China offer to help. This would be an example of what type of sampling strategy?

Arthur met rottweiler breeders lynda and george at a dog show in rhode island. the couple, who reside in new york state, later sold several rottweiler dogs to arthur who lived in rhode island. arthur later sued lynda and george, claiming that the dogs were sick and infirm. he filed a complaint in rhode island courts, claiming that even though the dogs were sold in new york, the breeders had attended the dog show and advertised in the rottweiler newsletter which was distributed at the event in rhode island. based on the facts, do you think rhode island courts have personal jurisdiction in this case?