Russell's study compared gpa of students who volunteered for academic study skills training and those who did not elect to take the training. he found that those who had the training also had higher gpa. with which validity threat should russell be most concerned?

Create two different formats that would be featured with your paragraph on a webpage entitled “environmental heroes: anyone can be one.” information that might be appropriate to incorporate may include (but is not limited to): o what can the average citizen do to your organization’s cause? o why is the organization’s cause important? o how has the organization made a difference? now, think about how you can communicate this information in different formats. maps, organizer charts, graphs, pictures, hand drawn illustrations, audio, and video can be effective. make sure you include the two media. about the friends of the everglades and the first one to get it get ist