They therefore developed a content valid scale and showed that it was unidimensional through factor analysis. They then factor analyzed their measure of positive urgency together with the four scales referred to above, and obtained a five factor solution. Positive urgency correlated quite modestly with sensation seeking, lack of planning, and lack of perseverance (r's ranged from .21 to .28) and it correlated more highly with negative urgency (r = .37).
