Anomalous experience of self and world: Administration of EASE and EAWE scales to four subjects with schizophrenia

The aim of this paper is to study anomalies of self- and world-experience in schizophrenia from a phenomenological perspective, through the use of the EASE and the EAWE interviews.
Four patients with diagnoses of schizophrenia were interviewed with both EASE and EAWE. A qualitative analysis of these interviews was carried out on all the data; quantitative scores were also assigned based on the frequency and intensity of items endorsed by the subjects.
For the EASE, subjects endorsed an average frequency of 45% of all items. For the EAWE, subjects endorsed an average frequency of 26% of all items. Furthermore, EAWE data indicated more heterogeneous profiles of experience than the EASE. This heterogeneity is not surprising, given that the EAWE was designed to be a more broad-based or less targeted exploration of various changes likely to be associated with schizophrenia spectrum (but also with certain other conditions).
Our data suggest that, although disturbances of world experience may always be present in schizophrenia, they may take numerous and varied forms. Because the experience of the world occurs across many different modalities, disturbances of this experience would be fundamentally less unitary, whereas the experience of the self present a more coherent and unitary gestalt.
These results show certain overlapping between the scales while also indicating the potential value of combined use of the two instruments. Finally, we discussed the relationship between experiential description and behavioral observation, and their potentially complementary value in exploring the first-person perspective, particular in the case of experiences that occur at a more pre-reflective level.