A measure that indicates whether items that are presumably part of a scale measure the same construct. It usually measures whether several items that propose to measure the same general construct would produce the same results. Internal consistency scores range from 0 to 1. An acceptable reliability score ranges from 0.65 to 0.70. Internal consistency scores of 0.95 or higher would mean that the items are redundant. Analysis may permit dropping items to obtain acceptable internal consistency scores.