You're correct. What saalweachter was describing are ways to minimize threats to reliability and validity. - http://www.socialresearchmethods.net/kb/relandval

You're correct. What saalweachter was describing are ways to minimize threats to reliability and validity. - http://www.socialresearchmethods.net/kb/relandval.php http://www.socialresearchmethods.net/kb/relandval.php - http://www.mathcs.duq.edu/~packer/Courses/Psy624/Validity.html http://www.mathcs.duq.edu/~packer/Courses/Psy624/Validity.ht... - https://en.wikipedia.org/wiki/Internal_validity https://en.wikipedia.org/wiki/Internal_validity - https://en.wikipedia.org/wiki/External_validity https://en.wikipedia.org/wiki/External_validity