can the same item be used in multiple items why is it so difficult to use the same data item multiple times in a survey can same item be used in multiple items of a survey what is reliability coefficient for cop scale what scale of a survey includes a problem item can same item be used more than once can the same item be used in multiple scales how does the reliability coefficient for a survey why is rex used in cop scale? can one item be used in multiple surveys different scales for survey can rex be used multiple times in survey can a single item be used in multiple scales of a survey what is the reliability coefficient of one item to another items can the same item be used in multiple items? can the same item be used in multiple scales in a survey what is reliability coefficient which scale is used for multi item survey does rex and COP scale overlap can you use one item as a single variable