Researchers at East Tennessee State University wanted to test their prediction that offering incentives would encourage donations. Members of the "treatment group" were offered a lottery ticket if they donated. Members of the "control group" were offered no special incentive. The researchers found that offering a lottery ticket increased donations. What method of quantitative research did they use?

Give reason why some traditional caribbean customs are presently changing

In a citizens elect the president as head of government separate loy from the legislature

Which of the following methods could be considered a "best practice" in terms of informing respondents how their answers to an on-line survey about personal information will be protected? respondents are informed that investigators will try to keep their participation confidential; however, confidentiality cannot be assured.respondents are informed that a research assistant will transfer all the research data to a password-protected computer that is not connected to the internet, via a usb flashdrive. the computer is located in a research team member's office.the investigator uses the informed consent process to explain her institution's method for guaranteeing absolute confidentiality of research data.the investigator uses the informed consent process to explain how respondent data will be transmitted from the website to his encrypted database without ever recording respondents' ip addresses, but explains that on the internet confidentiality cannot be absolutely guaranteed.the investigator uses the informed consent process to explain how respondent data will be transmitted from the website to his encrypted database without ever recording respondents' ip addresses, but explains that on the internet confidentiality cannot be absolutely guaranteed