Basically, we have two groups A (older people) and B (college kids)
and each are required to make a telephone call at a certain time, and that time is recorded electronically. A was better are remembering. Conclusion: at least one type of memory does not suffer as a person ages.
And this is a support except type of question
OK, so answer is choice B, which says that the same group of researchers answer the calls made by the caller in both study groups.
this answer choice is terrible, don't you think? Because that's a control. For instance, if group A had a really attractive voice answering the phone, people will tend not to forget. It will be a third variable that will affect the study.
What do you guys think?