Psychological Trauma: Theory, Research, Practice, and Policy Vol. 9, Iss. 6,  (Nov 2017): 696-705. Objective: The current scientific measures of posttraumatic changes in the wake of major stressors have mostly been unidirectional. This study is an attempt to develop a scale that will capture the continuum of positive to negative psychological changes after trauma. To read the full article, log in using your NHS OpenAthens details.