Tyler’s grandmother, Rose, has been receiving e-mails from Tyler every day for many years. In anticipation of his e-mails, she checks her inbox more than once in a day. However, since Tyler has started college, the e-mails have stopped. As a result, Rose checks her e-mail only every few days. If this pattern continues, Rose will completely stop checking her e-mail. In classical conditioning, this is known as

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a researcher conducts a comparison of the comments made in a publicly available blog and the blogger's comments on a similar topic in a weekly magazine. undergraduate students in a field methods class are assigned a research question and asked to interview another classmate, to be followed by a class discussion on interview techniques. a cognitive psychologist enrolls undergraduate students for a computer-based study about the effect of mood on problem-solving behaviors. a researcher sets up a meeting with the superintendent of a large and diverse public school system to get data about the ethnic composition of the school system and the number of students receiving free lunches.