Following a riot at an Indiana correctional institution for delinquent girls, the authors sought to determine whether the girls who took part in the riot differed in some demonstrable way from those who abstained from participating. The differences found between the two groups in life histories and personality variables led the investigators to conclude that the responses of the girls during the riot were extensions of long-standing behavior patterns rather than merely spontaneous displays evoked by recent environmental events or determined by attitudes produced within the institution.Abstract Teaser