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A major earthquake struck Peru in May 1970. This post-quake study compares the impact of this natural catastrophe on the residents of two different cities; one was 90 percent levelled by the quake and one was untouched. A relatively homogeneous population of Peruvians obtained from the two cities completed two paper-and-pencil tests, the Social Readjustment Rating Questionnaire (SRRQ) and the Schedule of Recent Experience (SRE). Both questionnaires were adapted from the SRRQ which had been translated for studies in Spain and EL Salvador. The data from the SRRQ generated two Peruvian Social Readjustment Rating Scales (SRRS), one for each of the cities studied. The differences in the two scales were striking. The lowest intra-cultural correlation yet observed on four studies was obtained. Comparison with a United States population yielded no significant relationships (rs = 0.15), the first time this has occurred in nine intercultural studies. A comparison of the profile of items generated by their subjective magnitude estimations indicated striking qualitative and quantitative differences between the two populations. The SRE generated frequency of occurrence of items and life change magnitudes in five proscribed time intervals. Significant differences in these two quantitative indices (including the health change items) were observed in the two populations in some of the time intervals and not in others. The data formulated suggest that the occurrence of a natural catastrophe--an earthquake which devastated one city--accounted for much of the difference observed between the populations of the two cities.
Janney et al. (Wed,) studied this question.