Hawthorne studies were conducted between? A) 1927-1932 B) 1985-1987 C) 1970-1980 D) None of these Related MCQs: The relationship between and among the values in a set is referred to as? ……. validity involves making a comparison between a measure and an external standard? He was absorbed …. studies? Who was the founder of American Institute of Pakistan Studies (AIPS)?